`deelicious Posted July 24, 2009 Share Posted July 24, 2009 - Link to comment Share on other sites More sharing options...
Guest kelvin6 Posted July 24, 2009 Share Posted July 24, 2009 Did you do the easiest way to reset the ECU? Disconnect the battery and let it sit for a while (or turn the starter, press the brake pedal, any way to put a electrical load so that whatever residual power is left gets drained). For most cars, reseting the ECU will wipe the Long Term Fuel Trim map. The LTFT map is the main fuel map for th ECU to determine performance and fuel economy on. When the data becomes corrupt or unstable (due to problems in the car), it can affect performance even when the problems are corrected. Clearing it will restore it back to factory defaults and the car may run rough for a short time. It will do this because it will have to adapt to your driving and readapt all the car's sensor signals. This may not solve your jolt problem, but at least its worth a try as its a no cost fix. Link to comment Share on other sites More sharing options...
Guest aznfishyfart Posted July 25, 2009 Share Posted July 25, 2009 if ur gonna disconnect the battery when u reconnect let the car sit idle for a good 10 minutes this will remove the roughness from the idle after the ecu is reset Link to comment Share on other sites More sharing options...
`deelicious Posted July 26, 2009 Author Share Posted July 26, 2009 The ECU was resetted a while ago. I shouldnt have to do it again but yeah, i guess it wouldnt hurt to reset it again. I just hope its not the transmisson. Link to comment Share on other sites More sharing options...
cksdayoff Posted July 26, 2009 Share Posted July 26, 2009 check the fuel tank sensor. Link to comment Share on other sites More sharing options...
cksdayoff Posted July 26, 2009 Share Posted July 26, 2009 what is the problem when certain driving conditions are accompanied by high ambient temperatures, the fuel tank ventilation valve may not remain fully closed. If this happens, liquid may enter the fuel tank venting system and migrate into the evaporation system,saturating the carbon canister. Should this occur while driving, the vehicle may experience performance issue ( i.e., vehicle jerking) and the malfunction indicator lamp (MIL) in the instrument cluster could illuminate. In rare cases, fuel could leak from the evaporation system leak detection pump filter. A fuel leak, in the presence of an ignition source, can lead to a vehicle fire. could be this. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.