J240ZTurbo Posted June 28, 2009 Share Posted June 28, 2009 Hi, I wash my engine and my interor with water now car accelater but does the wawawawa after 2000 rpm and wont go over 2200 please help??? Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted June 28, 2009 Share Posted June 28, 2009 Open up, dry off, and lube the AFM and TPS connectors. Use a dielectric grease. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted June 28, 2009 Share Posted June 28, 2009 Dry out the inside of your distributor cap first, it's easier and also causes those type of problems as well as what is mentioned above. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted June 28, 2009 Share Posted June 28, 2009 The fact that it won't rev over ~2200 rpm indicates TPS got wet. No big deal to check the dizzy cap tho' Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted June 28, 2009 Administrators Share Posted June 28, 2009 TPS! You get water in the connector of the TPS, that will create a VIOLENT rev limiter, shutting off all fuel instantly at 3200 RPM and turning it back on instantly at 2800 RPM! The car will buck violently between 2800-3200 RPM until the water is dried out of the TPS connector. I typically just remove the connector and blow it out with my mouth. Some of you can tackle this on one breath. No harm is done, doesn't affect the ECU or TPS other than expediting corrosion of the connectors due to being exposed to moisture. This exact scenario has been covered here and every other Z car forum ad-nauseam as almost anyone that has washed their factory Fuel Injected Z car, discovers. What takes place is the water shorts the idle circuit in the TPS so now the ECU thinks the throttle is closed. The ECU interprets a closed throttle and at higher RPM, shuts off the fuel injectors completely for emissions and to a smaller degree, mileage reasons. At any RPM above 3200, if you close the throttle, the injectors shut off completely delivering NO fuel to the engine, and then turns them back on at 2800 RPM. If you put a free flowing exhaust on the car, sometimes you can hear it kick back on with a distinct "pop" in the exhaust when it happens. Quote Link to comment Share on other sites More sharing options...
capt_furious Posted July 1, 2009 Share Posted July 1, 2009 TPS = Throttle Position Sensor. ...just in case you were wondering. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.