Ox66 tps setting. almost every sensor on that engine uses a 5Vref.
- Ox66 tps setting. This is also commonly referred to as a link and sync.
- Ox66 tps setting. High speed operation seems ok. No matter what I did to the adjustment, I couldn't bring the TPS below 3. B. a pair of coils on the stator charge capacitors in the CDI box, the six pulser coils simply tell the capacitors when to discharge. #24. black is ground ,pink is pick off and orange is 5V DC reference. Feb 8, 2009 · Welcome to BBCBoards. 05-13-2014, 05:51 PM. Feb 18, 2016 · My sensor only shows 2. A x . Now check your TPS voltage. Max RPM ISSUES. Nov 7, 2017 · I have a 1998 0x66 250 hp Yamaha 2 stroke model L250TXRW runs rough and backfires or a popping like its got a bad miss fire at idle slight hesitation (I tested the voltage on the throttle position sensor and set it to the same voltage as the other engine) when throttle up then runs ok (testing on ear muffs), changed and cleaned out O2 sensor pick up hole, found a bad low pressure fuel pump The TPS is a three wire potentiometer. I did a link & sync as per the manual, checked for 35. With a . Feb 8, 2011 · 56 posts · Joined 2011. Check TPS voltage and adjust if needed. Customer Support: 1. When I test resistance, w cylinder 1 disconnected and fully closed, I’m measuring about . So I decided to put it all together. the colors on the adapter change. Regards. the voltage fluctuations should be RAPID too. one is the 5Vref that needs to be tested PRIOR to testing the TPS output. May 12, 2007 · Re: Throttle position sensor Yamaha 225 excel. Motor is a 2000 OX66. Make sure all throttle bodies open together (no cost) If not better-. This can be done by pressing the release tab and gently pulling the connector away from the sensor. then it adjusts fuel volume (injector pulse width) and ign timming trying to hit the ECU internal map for what the RPM should be for the sensors inputs. almost every sensor on that engine uses a 5Vref. Turn the idle set screw clockwise until the voltage reads . idle screw as it idled fine before. My problem was only at mid range between 2400-3600 RPMs and not consistently. Apr 5, 2020 · I’m having mid to low RPM surging issuesw my 2005 Saltwater Series OX66 200hp. when you place the ECU in bypass mode it fixs ign timeing at 7*BTDC,fixs fuel rich and is stupid, cant test anything that way. May 19, 2021 · This video covers how to adjust the linkage on my Yamaha TLRT outboard. After doing some research and buying the maintenance guide I started cleaning and testing parts. 59. Aug 20, 2010 · Anyway, after going through the service manual about 4 times, and the SELEC service manual I decided to look closer at the TPS. 13 = 5. The output voltage is based on the input voltage. Sep 15, 2009 · Re: '97 225 OX66 Yamaha WOT rpm loss with a twist. I was checking the timing at idle with engine on flushing attachement. I am wondering what voltage you all have your TPS set at and about how far you have your idle screw turned up. Blue Yellow. 920 -- . On the HPDI engines the TPS adjustment is a little different. (no cost) If not better-. It seems to be in Return to port mode. I shoot for . For the full story and diagnostics it’s all in the “OX66LP pumps” thread. I also pulled each spark plug boot (twice) while the motor was surging and I could hear the motor run worse each time I did. I followed the steps by first disconnecting the linkage on the #1 throttle body, and check the voltage between the orange and pink wires. You should have 5v going into it and . after setting the TPS you have to set the shutter stop screw so the engine idles at about 730 rpm. Jul 2, 2011 · Strange problem with Ox66. Share. My guess is you have some type of electrical issue. Issue: rich running engine. 1 EFI motors, they incorperate CCS which will shut down #5 until about 2000 RPM and #2 between 800 and 2000 RPM. Following the instructions on gnttype, I was able to set the TPS idle reading between . the spec is . Checked all fuel lines. 940 volts at idle. Plan to take your tools with you to the dock. You will want refine your TPS setting with the engine running in the water. net BBCBoards is the leading online community for Bass Boat connections. Compression and leakdown test will tell you if you have an internal issue. It is also used for many features in the ECU, such as fueling, accelerator pump, idling control, fuel cutoff, cam control, automatic transmission control, etc. Mar 29, 2014 · ti-ben. 52 volts then adjust idle screw to reach . There is a voltage signal (4. Mar 22, 2007 · TPS harness is a 3 wire connector: blue, black & yellow. May 18, 2010 · Re: 2004 Yamaha 250 OX66: Rough Idle (BassHog007) Set idle speed to 750 rpm in neutral. Apr 4, 2013 · I have an 01 Yamaha ox66, at an idle the motor has a harsh lean sneeze. Mar 9, 2012 · Y ou c an find the original web page here: Side X Side World :: View topic - Polaris: TPS Adjustment 2010 and older TPS Adjustment procedure 2005-2010 XPs: By: commanderjjones aka Jerry _____ TPS = Throttle Position Sensor: The TPS is located on the passenger side of the throttle body. Apr 21, 2014 · OX66 250hp cranking but not starting. that engine has 2 thermoswitchs and one thermosensor. 601. also test the fuel pump current draw again using your DVM only now set up for amperage. 25V. 2. T-stats and poppet replaced. 50 and synched throttles (all work done to Yamaha Factory Service Manual provided by SIM) tested Crankshaft Position Sensor voltage at green white, green blue connector and was getting 15-18v, spec is 6v. Long story short I put a used 1998 225 ox66 on my boat last spring. if you lost 1,3 and 5 check the stator charge coil output as you may have lost a coil. There should be no clearance between the oil pump lever and the lever stop with the lower throttle body plate completely shut (per Yamaha factory manual). should be between 4k-6k ohms, anything higher needs replacement. test the ign with a DVA type peak reading meter and check the injector filters. Have a digital gauge. Manual says it's supposed to be at 730 +/- 30. Yamaha s225txrx. Once the TPS voltage is verified and set, remove the sensor tool and re--install the TPS harness . May 20, 2012. 15 = B. only way to tell is simply monitor the sensor output voltage. 0 mm (0. Jun 28, 2011 · Join Date: Jun 2011. 4832 cdielectronics. Tweet. 70mm gauge on the throttle stop: - the ohms is infinity. Operate each of the power trim and tilt switches on the remote control and en-gine bottom cowling (if equipped) to check that all switches work. This is also commonly referred to as a link and sync. Oct 9, 2016 · Yamaha Outboard Ox66 250 HP - throttle position sensor test harness. Re: Yamaha OX66 experts help I have a gremlin. Jul 11, 2006 · Tweet. 62 volts on TPS and make no futher adjustments to idle speed when start up engine (set idle with engine off). Problem is when throttling up to get on plane, the motor cuts out and drops back to idle. Comment Dec 8, 2022 · Disconnect the electrical connector from the throttle position sensor. Next turn the idle up until the TPS reads the idle setting. I found the TPS value too, 3. 705 -- . 3371 Tech Support: 1. I am crying UNCLE! S. 29 V. most likely, yes. Result: being hesitant to try a $300 part that might not take care of the issue, we searched for alternatives. 43 x . 50 +/- . New MAF, new tps, no leaks, and relocated paper filter. It's intermittent, Electrical is not my strongest area. HOWEVER, my current thought is the TPS. May 13, 2014 · Tweet. Most O2 sensors output . Step7 - with the tps attaching hardware slightly loose , move the tps to read 0. Default ox66 excessive oil in all cylinders. Just wanted to leave some feedback on the tps adjustment tool. Apr 23, 2007. Tighten the TPS retaining screws, making sure that the voltage continues to read . Check the power trim and tilt unit for any sign of oil leaks. Tilt the outboard motor up and check that the tilt rod and trim rods are extend-ed completely. With the idle screw backed off and throttle plates closed set the TPS to . com 1 - Normal (No Faults) 13 - Incorrect Pulsar Coil Signal 14 - Incorrect Crank Position Sensor Signal I have a 1999 Yamaha 250 HP OX66 model outboard. 09-21-2016, 10:41 AM. Max rpm 5k. That last reading was taken after I adjusted the TPS back to the recommended . I have a fairly low hour SX225 nthat is running very rich and fouling plugs, I can change the plugs and after a short while it will start smelling very rich while on plane and misses badly at idle. 07-02-2011, 01:33 AM. 55-4. 08 RZR 800- 11 front end change, SATV +6 High Clearance LT kit, Rhino axles, 900 XP shocks, 900XP front bearing carriers, dual core radiator, QSC clutch, 30" Carnivores/STI HD6 wheels, 3500lb Polaris winch, LED headlights, 30" lightbar, 7 May 24, 2001 · Jan 12, 2006. Disconnect battery cables at the battery. the unburned fuel is typically from a defective fuel pump. EX. 2000 Yamaha 200hp OX66. I'm using my 06 GSXr 600. Throttle linkages all disconnected. start the engine and allow it to this determines basic fuel curve. This will ensure a complete reset of the throttle position sensor. Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. After I did all the basic maintenance and replaced some parts I still had Jun 11, 2009 · Re: 200 Yamaha OX66RPM loss at WOT. 67 is what i've heard guys go to, though . #2. 40 with throttle plate fully closed then turn idle up until TPS reads ~0. First off, I'm based in South-Africa and the OX66 was not sold by Yamaha SA - so they refuse to have a look at the motor. Set the sensor at . It tells the ECU how far open the butterfly in the throttle Oct 23, 2010 · Re: OX66 O2 Sensor Check find a real tech. The engine has not run right since day one. Acceleration choppy, motor bogs down. To do this disconnect the oil pump ink arm, back the idle stop screw off and loosen all the throttle plate screws to make sure all of the plates area closed. 500cc BB kit @ 12. 58 volts idle (orange and pink wire) and then I took the orange lead and connected it to the red wire and the full throttle reading was 4. 66 at w. #8. Apr 25, 2011 · Posted April 26, 2011. The TPS provides an output voltage to the CDI. The manual says at closed throttles the setting should be . And to set, using a . Step6 - snap the throttle shut once more , you will see as you open the throttle the tps is sending an increasing ammount of voltage to the ecu. This is very puzzling to me. The boat has an issue when idling in neutral. I have a 2014 350 EXC-F with no mods to improve the performance. When at 6, sometimes it will stutter a little and puff smoke from the exhaust. fyi, i just did a tps adjustment and got the buzzing. 62 because my idle is at 780 or Aug 21, 2017 · I checked my TPS using Rodbolts old post with instructions. 866. Now the engine runs good from 900-4500 rpm. Jul 20, 2008 · 1st make sure your TPS is set right. 5V. 48/. Sep 17, 2016 · IF the O2 sensor output is wrong the ECU will react. Williams Performance custom grind race Cams (both) Port/Polish by Williams Performance. yes, the 3. Also replaces binnacle and cables due to sticking. Islander. s250txrx (1999 250 ox66) Just finished a complete 100 HR service. tighten the locknut. Had a lot of carbon built up on the o2 sensor. Test ran, Idled poorly and low. Port at 7-800 . Yamaha has taken the stance to also use ring free as an additve to help reduce carbon deposites. Feb 22, 2010 · 2002 vx 250 ox66 slow hole shot 02-22-2010, 12:47 AM Check throttle linkage synchronization and TPS setting. the ign system on that OX66 is dirt simple. 50V, full throttle 4. 3. Hey guys! I thought of posting this "How to" adjust the Throttle Position Sensor (TPS), because I have looked at quite a few threads to get all the info on how to do this. HD Springs. (Idled and reved up fine). It is possible to control the engine without this sensor but with limited drivability. 67 volts. I checked the TPS on my 225 OX66, throttle closed . Max rpm in water 2k. I have a rough running and surging 2002 250 OX66 and pulling my hair out. If I unplug the two short yellow wires at the CDI, the engine idea drops to 700-800. Older models set to 0. Also if i disconnect this coupler the idle comes up to 17-1900 rpm and engine idle flawlessly. I dont suggest bending the rod as this may change the radius that it moves in and create other problems. the ECU looks at the TPS,CTS,IAT and map. 25 volts) sent to one side (LB wire) of the MTS from the ECU (Electronic Control Unit). Jan 16, 2011 · Bottom two plugs were perhaps a bit more oily than the other four but not dramatically so. 13k so I am almost dead in the middle of the spec. PM me with an email address or a fax number and I'll send you a copy of the procedure. Refer to the appropriate Evinrude E-TEC Service Manual before attempting any service repairs or part replacement. 46. one time it stalled. 75 to 5. It would be easy for an ECU to note if and when the output was greater or lower than this range which could set a code for a faulty sensor. the high fuel consumption is a symptom of a faulty O2 sensor. Drain engine oil tank, check water trap. By measuring the angle of the throttle valve, the TPS helps the ECU determine the appropriate fuel-air mixture Any one ever set their tps while motor running in gear at the boat ramp? I got a lean sneeze and need to know if it can be done without a volt meter. unclip the lower two throttle shutters so the bottom shutter can fully close. The motor would jump from 2200 to 3300 rpms without moving the throttle. Forgot to mention I also replaced the t stats, swapped the engine cooling temp sensor and swapped the thermo switches. 62-0. Mar 2, 2009. Motor has about 12 hours on it this season since fuel filters, low pressure pumps were changed. if rail pressure remains good its either fuel or ign. Mine checked at 5. then it looks at RPM. Hi new member here. 76k. check your orange spark plug caps are in spec. I have the procedure from the manual, I'll find and e-mail to you. The port engine runs great. Messages. Reading the plugs can also give you an indication as to what cylinders are affected. I changed it to 0. The fuel is fresh and crystal clear, main filters just changed. Sync & Link. 50. The starboard engine runs great at high RPM's, but at low RPMs (800-1300) it shakes quite a bit more than the port, and at idle (neutral) I am getting variable readings of RPM. Runs about 3 minutes, warms up and sputters and stalls out. The boat has been a one owner boat up until I bought it a few months ago, always garaged and maintained with an open checkbook. Jul 4, 2008 · This MTS sensor is a center tap rheostat that is connected to the end of the shaft that has the throttle blade mounted in the throat (bore) of the throttle body. dieseltruck. Both look good and also put in new thermos just in case. 04-21-2014, 03:36 PM. Golen Engines website has instructions on how to do that and they recommend . Diagnosis: possibly o2 sensor, but it almost passed most of the Yamaha service manual checks. Jan 14, 2009 · Jan 13, 2009. 467. 02 volts) at idle (pink wire to orange wire) to ~ 5. 60-. 06-26-2016, 11:10 AM. Strain oil in painter's filter & look for suspended "goo", gel, or emulsion that could be fouling the oil pump (if found, remove, clean & reinstall both engine and remote oil tank). Replace if leaking ($140 for parts off the internet and you can easily do it yourself May 1, 2010 · 52. 62 , mine are already set for idle fully closed with proper air flow fully closed because of the shutters have a he drilled in each one so I'm thinking fully closed I should set at . ox66 high idle. Input voltage is 4. Sometimes this engine will idle high (10-1100 RPM), and other times it will idle low May 13, 2017 · 05-14-2017, 02:48 PM. Going on our 7th season with the boat and motor. also check the circuitry leading back to the ECM pins. It's used to test the Throttle Pos Aug 27, 2009 · Re: Help needed - Rodbolt? Anyone? - 2000 Yamaha 150 OX66 TPS Testing ok, pay attention very closely to the wire colors on the ENGINE side of the tps. Re: 3. 35mm gauge on the throttle stop: - the ohms is . This is when they started using more oil than on previous trips. Fuel injectors all have new o-rings and seals. Jan 11, 2009 · Tighten the screws, repeat until you are between . Sep 21, 2016 · Tweet. that is normal. 48-5. I built this instead of buying the part from Yamaha. 35 – ECU Processing Information (OX66) 36 – ECU Processing Information (OX66) 37 – Intake Air Passage (Electronic Throttle Valve) or ECU Processing Information (OX66) 38 – ECU Processing Information (OX66) 39 – Oil Pressure Sensor. Apr 28, 2015 · It wants to hang, then slowly drop to about 1350. Snug down the hardware keeping the tps in position , and re-check the readout. The last several times out it seems to be smoking more then usual. 53. Jul 4, 2017 · May have a bad TPS? See how the output voltage is constantly dancing around. Back the idle all the way out until the throttle plate is fully closed, then adjust the TPS voltage to the base setting. 5 volts. 85 range. Apr 26, 2010. You will learn to set the reading a little out of spec to compensate for the tightening. It is responsible for monitoring the position of the throttle valve and providing feedback to the engine control unit (ECU). it should draw less than 4 amps, much more and its overloading the ECU. It is ancient technology. Aug 7, 2013 · REMEMBER there is NO idle adjustment on EFI. And yes the floor mat was removed from under the gas pedal. 53 and tested. HMF Full Exhaust. there are TWO TPS specs. Using a hexagon wrench, turn the timing Checking the timing belt and belt tensioner 1 clockwise to push the sprockets timing belt, increase strength gradually, 1. I've never done it before and I read some articles on the 'Herky Apr 20, 2016 · The last OX66 model was produced circa 2004. While idling the the engine would idle up about 100-200 rpm. now tighten 5 of the shutter screws,not the one with the stopper. Manual says . Sep 12, 2010 · Sep 17, 2010. A $42 NTK o2 sensor of almost identical design has greatly improved fuel Oct 17, 2019 · TPS Sensor. 020". RPM symptoms will exists under a load. Yamaha started development of the OX66 in 1984 [1] as a design concept for a lightweight and compact Formula Two engine with a wide power band. Quick history: Throttle position sensor checked with 12 volts. The range is 0. It's a ratio of two resistance measurements. Nov 9, 2008 · The pdf file technical manual says this: putting vacuum on the system; With a . It will literally change the reading by applying a little force with your fingers - while the sensor is tightened down! Have a 2000 Yamaha 150 ox66. There's I'd nothing anywhere on this or iboats or any other that has info on my issue obviously there's nothing I want from a backyard mechanic stupid and no the shop manual is wrong about the opening the throttle body on mine so stupid get off my topic , this is my opinion and I have that right and if I want retract something iv said I will , listen I rebuilt my first outboard when I was 17 Jun 12, 2017 · 1999 225 hp efi,wont power up enough to even get on plane. This sensor indicates to the ECU what the driver wants to do. make sure all 6 shutters are fully closed and the oil pump arm to stopper clearance is . The TPS is to be set with throttle plates completely closed. Model SX150TXRY. thats why correct proppiing on the OX66 is so critical. I did not adjust the. Re read the instructions and Readjusted to . Hey guys I own a 99 Contender 28 with twin Yamaha 200hp Ox66's. They can answer questions for any Yamaha outboard model or horsepower. The emission is removed though. It is easy to set to specs. Fuel Intake. 07-19-2006, 10:04 AM. High Idle. 15 - which is below the recommended 4. Is this ok or do I need a new sensor May 24, 2010 · 2007 LT-R450 - . When I took the first reading (stock), it was at 0. Sep 2, 2018 · This video will outline troubleshooting of the Throttle Position sensor and circuit for the Yamaha MX-V FI system, including error codes;P0122 – TPS Circuit Sep 27, 2011 · I checked the TPS on my 225 OX66, throttle closed . 99 200hp OX66's. net Yamaha Outboard Parts. The voltage was reading low so I made the adjustment to read . . Lp fuel pumps, vst filter, on board filter, and remote filter all changed about 20 hours ago. 010" and most the time have to clip 3-4 threads from the rod. A is the ohm valve of Blue and black wire. Mar 12, 2010 · Stock, that voltage should be . It has about five hours use since the annual spring tune-up including (gapped to specification) spark plugs, all lubrications, changed RACOR filter, fresh (non-ethanol) gas. 15. Most people will set to closed and set tps to . Nov 11, 2023 · 2000 Yamaha 200hp OX66. Very rare case it will stall and start right back Sep 25, 2018 · After adjustment on the one motor before last trip, the adjusted motor burned the 1 gallon, so that told me that the oil use was excessive. Voltage at the yellow terminal should be . Need Advise. The oil pump was replaced under warranty two years ago, the O2 sensor last year (yeah, the old one really did go bad, it would not respond after cleaning) and the TPS and oil linkage adjustment are correct. 43k ohms. 2001 SX225 OX66 running rich. Mar 2, 2009 · Sep 1, 2003. ymtek: Symptoms: Motor ok cold. Dec 15, 2018 · TPS set at . 9 volts. 48-. #3. Loosen TPS. unscrew cap off of coil wire and check resistance across. #1 · Feb 8, 2011. 65 millivolts. 13 = B. So my starboard SX250 (2001) OX66 idles at about 1100 RPM. I probed the yellow wire w/red and black to battery neg. I had played again with the idle, which had been at 600 RPM and seemed to run fine. 61 and wow, the difference is night and day on my bike. 9 and fully opened about 4. The service manual lists about 8 or 9 different sensors but does not list how to check them . 16. 5:1 - CP Piston. this means backing idle screw off all the way also. 1 ~ . Sep 21, 2013 · The only thing that continues is a small surge from time to time. More than a decade ago. It seems to run fine at 4,000 RPM cruise but smokes once Apr 21, 2018 · Yamaha TPS - Throttle Position Sensor - is one of those topics that you never heard about, until it leaves you high and dry by the side of the road with no w POWR Power unit 2. This motor was built by a local guy that traded me for my blown HPDI 250 Jun 25, 2007 · If the motor is tilted beyond level (tucked under for takeoff) the idle speed will drop by 50 - 100 rpm). 06-07-2016, 08:10 AM. adjust the stopper screw until TPS is about . 40 and . 20,066. 54v (+/- . B is what you are going to set the TPS at when measuring yellow and black wire. 4. Reconnect rods, go boating. 50 volts (plus or minus 0. chbaker3. fully close throttle valves. 54mm gauge on the throttle stop: - Says when the gauge deflects, this is where to set the tps. at about 113*F the quick start feature drops out and the ign timing reverts to about 5*ATDC. At the time of development, both BMW and Honda provided engines for F2 (in the form of the M12/7 inline-four and the RA260E V6 respectively), but Honda's engine yielded superior results despite limited use. tighten all of the screws and recheck. Sep 27, 2008 · The motor gets too much oil fouling plugs and the O2 sensor. 06-28-2011, 12:11 PM. 50v coming out. Starts right back up and is fine afterwards. 5 kilo ohms or less. o. I re-set to 700+ and then it would surge to 1200, then back to around 1000 RPM. Is this ok or do I need a new sensor Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. 72 (would not go any higher). I have twins on a 227 sailfish walkaround. 04. Posts: 62. 50 and adjust idle to obtain 730 rpm and at that point have a tps setting of around . 930 volts. i Guys, I'm in some serious need of professional help with regards to my OX66 outboard. 63 is a good starting point. 005-. Then I got to the Throttle Position Sensor and everything came to a screeching halt. With no thermo-sensor: idle smooths out, but is high -1100 rpms -usually 850. Checked Poppet (see 9/26 update) Decarb can/hose method (see 9/26 update) Diagnosis done on #2: Nothing really. 5k ohms. ign timing is computer controlled, however if anything fails the system reverts to a locked base timing of 7*BTDC. The common wire is the BR/BK wire and the Y/W wire is the Jul 7, 2013 · OX66 Cutting out. TPS set to . Regards Boats. 1st make sure your TPS is set right. Carefully follow these instructions to ensure correct procedure. turn the oil pump lever so it contacts the stopper in the fully closed position. my bike when I measured A (blue & black wire) I got 4. There's more to it than that. The same as a TPS (throttle position sensor). If this is your first visit, be sure to check out the FAQ by clicking the link above. I was at . Aug 22, 2016 · Omg was it bad, also it made my bike run hotter then normal, now shes good. I am thinking somehow after my mechanic went through all the lync/sync, TPS adjustments that the oil link rods somehow got out of adjustment. Posted April 25, 2014. 62V. 005 to . Making this adjustment will solve a lot of the fouling problem that is common with this motor. Sep 6, 2009 · Connect one meter lead to each of wires to read voltage between pink and orange wire. 1L OX66 motors do, as long as they are not VX 3. 98 (testing pink-red). However the highest WOT reading that I could get was 4. NEVER run the engine with the O2 sensor removed. Aug 30, 2006 · 2. the CDI unit does NOT amplify any voltages. should be about . FCR-41 Carb with Dial-A-Jat and Innovate LM-2 Tuner. now CHECK the TPS voltage. 2002 150dxtlra ox66 idle and timing questions. Feb 14, 2019 · The replacement throttle position sensor (TPS) must be correctly aligned on the throttle lever bushing. t. Wait for approximately 30 seconds to allow any residual voltage to dissipate. Not a two wire variable resistor. 2 in) pin 2 ing belt for cracks, damage, or wear. Usually O2 sensor failure is due to carbon buildup due to TPS, Oil pump adjustment out, and possibly dirty by product fom fuel brand. This group is to help other ox66 owners with common problems and any other incite members might have. 52 volts, when you tighten the screws, the TPS stresses enough to move the reading. I'll cover the timing and thro Feb 11, 2011 · 02-19-2011, 10:23 AM. 5k to 6. The timing was around 2 degrees atdc. #6. Not sure where to start or what the most likely suspect is . 02 v. When this would happen I noticed that the timing was advancing about 2 degrees. How does one do a link sync and tps adjustment? What I have done: New VST filter New plugs new O2 sensor New filters and clean gas What i have not done yet: May 29, 2009 · I have twin 1999 225hp OX66 engines (S/L 225TXRX's). 40 – ECU Processing Information (OX66) 41 – Overrev Control During Ignition Cutoff Operation (OX66) Most newer models, set TPS to 0. Re: 2002 Yamaha OX66 225. NEVER cut into a sensor wire, it leads to failure. Jun 7, 2016 · Tweet. Jun 26, 2016 · Tweet. 07-07-2013, 07:07 AM. 075v) If your engine has a non-adjustable TPS, the way to adjust those TPS setting is to elongate the screw bolt holes which will allow the TPS to be rotated. . When the engine warms up at idle, the tach fluctuates between 6 and 7. I have talked to John@H/T a couple times about my problem but I want to ask the group as well. Apr 12, 2005 · Tested Throttle Position Sensor - (see 9/26 update) Checked thermostats for corrosion. #1. But when i get my tps tool im gonna bump it up more, they are set too low. I don't know where to begin. Aug 31, 2006 · Re: OX66 oil pump linkage adjustment. 00 volts at WOT. 6 psi on high pressure fuel rail, adjusted oil injetion linkage, inspected and cleaned filters on injectors, checked compression, removed intake to inspect reed valves, cleaned o2 sensor, replaced o2 sensor with known good sensor, adjusted TPS, looked for damaged Mar 3, 2008 · 14. 423. Motors have 700hrs on them and I think I have a max rpm issue. If I unplug the two short yellow wires at the CDI, the engine idea … read more Apr 2, 2011 · the resistor is quite easy to check, simply unplug it select ohms on your DVM and check it. Dec 16, 2018 · 12-16-2018, 05:30 PM. May 17, 2023 · The Throttle Position Sensor (TPS) is an essential component of the engine control system in modern vehicles. Also was very hard to start. The sensor is ridiculously sensitive. 800. 715 volts. Reconnect oil pump. Apr 23, 2010 · Apr 23, 2010. 1 225 OX66 nightmare hard start, dies, no WOT. here is the formula: A x . 25 volts. TPS question ox66 Mar 4, 2010 · I have all the hydro tec goodies(see sig) on my 2001 OX66 225. as you have seen any sensor out of range can and will set base timing at 7* BTDC. It VERY sensitive. 5. +2 Ti Valves w/Newen Countour Valve Job. ox66 excessive oil in chambers. They can answer questions for any Yamaha outboard model Folks, I have been searching the THT for description of the link & sync and tps adjustments procedures for OX66. 75 ~ 5. Jan 24, 2006 · 01-25-2006, 09:09 AM. Jul 31, 2010 · Model. Check all 3 low pressure fuel pumps. 5. Check the interior and exterior of the tim- and then insert a ø5. 62 volts. Pressure tested VST. replace the now defective O2 sensor. adjust the position of the oil pump link rod joint until its hole aligns with the set pin on the oil pump lever. Set the idle. sj bk zl rx hp tv wn dy lw nj