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Author Topic: Service Engine Light sigsagg650 ¯ Member # 8368 posted                              I just changed out my stock TB for a 70mm BBK TB on my 2001 Gt and the "Service Engine" light came on..I called American Muscle and they said it shouldn't have came on and when I step on the throttle while the car is moving the car stalls for like 2 seconds before it regains power. Does anyone have the same problem and can anyone tell me what this can be? Posts: 158 | From: Mountain View | Registered: Apr 2008  |  : RRRCobraSC281 ¯ Member # 7086 posted                              throttle position sensor, maybe. -------------------- Project 93GT500 has started 90 Coyote Coupe (sold) 88 Mach 1 Coupe MM&FF 6/14 (sold) 65 FFR Cobra (sold) Posts: 1746 | From: Fremont, CA | Registered: Sep 2006  |  : Adam5.0 ¯ Member # 6995 posted                              check the code, go from there -------------------- want something old and japanese Posts: 1609 | From: Brentwood | Registered: Aug 2006  |  : ddarkslayer ¯ Member # 10688 posted                              sounds like when you switched the TPS you didn't ajust the voltage at idle. this is what you should do http://www.moddedmustangs.com/forums/5-0-mustangs/123164-mustang-idle-surge-base-idle-reset.html also get a sewing needle and stab it in the green wire put your volt meter up and adjust it. loosen the screws and move it clockwise/counterclockwise/up or down Posts: 307 | From: Folsom | Registered: Feb 2011  |  : Blind 2.3L CAFords OG Member # 3052 posted                              +1 check the code, might not have seated the throttle body on right and caused a vacuum leak. -------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  : sigsagg650 ¯ Member # 8368 posted                              Thanks for your help,, Posts: 158 | From: Mountain View | Registered: Apr 2008  |  : sigsagg650 ¯ Member # 8368 posted                              I checked the code and it reads "TP sensor-low input". Does this mean I have to re adjust the sensor? Posts: 158 | From: Mountain View | Registered: Apr 2008  |  : 5.0 LsX ¯ Member # 10017 posted                              yea, adjust the sensor, might get lucky just moving it slightly, but it does have a certain voltage output, need a volt/ohm meter to do it correctly -------------------- 91' Notch Posts: 1260 | Registered: May 2010  |  : sigsagg650 ¯ Member # 8368 posted                              the voltage is .50, i think it has to be from.95-.98...Do I really need to adjust the idle screw??? Posts: 158 | From: Mountain View | Registered: Apr 2008  |  :

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