Need some help
Thread Starter
Burning Brakes
Joined: Mar 2010
Posts: 1,012
Likes: 7
From: Moore OK
Need some help
So I got the new engine in and reused my old intake and throttle body.
I’ve gone through all the wiring, fuses, pretty much anything I can that relates to the problem at hand. The car has two hard codes, P1220, P1221. I can clear and they come right back. I just put another throttle body on it with no luck. Ive tried three different TPS’, and different TAC module. Car is stuck in REP, and throttle non responsive. I’m outta guesses and tired of ******* with it. HELP
I’ve gone through all the wiring, fuses, pretty much anything I can that relates to the problem at hand. The car has two hard codes, P1220, P1221. I can clear and they come right back. I just put another throttle body on it with no luck. Ive tried three different TPS’, and different TAC module. Car is stuck in REP, and throttle non responsive. I’m outta guesses and tired of ******* with it. HELP
Instructor
Joined: May 2013
Posts: 110
Likes: 13
From: Dixon Il
been there done that
I had an REP problem on my C5! Installed an LSX 447 with an F1X pro charger making over 1000 RWHP but kept getting an REP light any time I went to full throttle! We tried everything new TPS switch, Numerous throttle bodies and endless amount f time with a multimeter and nothing helped! We bought Nick Williams throttle bodies, the one made for a supercharger! Did not help. Wasted 750.00$ We finally tried a LS2 throttle body and the problem went away for the most part and no REP! I occasionally get an REP light but it only happens when the car loses traction and blows the tires off and then sometimes it will go into REP! It is very frustrating! Try an LS2 throttle body and see if it helps?
Melting Slicks
Joined: Jul 2014
Posts: 2,356
Likes: 359
From: Virginia
So I got the new engine in and reused my old intake and throttle body.
I’ve gone through all the wiring, fuses, pretty much anything I can that relates to the problem at hand. The car has two hard codes, P1220, P1221. I can clear and they come right back. I just put another throttle body on it with no luck. Ive tried three different TPS’, and different TAC module. Car is stuck in REP, and throttle non responsive. I’m outta guesses and tired of ******* with it. HELP
I’ve gone through all the wiring, fuses, pretty much anything I can that relates to the problem at hand. The car has two hard codes, P1220, P1221. I can clear and they come right back. I just put another throttle body on it with no luck. Ive tried three different TPS’, and different TAC module. Car is stuck in REP, and throttle non responsive. I’m outta guesses and tired of ******* with it. HELP
Le Mans Master
Joined: Jul 2010
Posts: 5,973
Likes: 719
I had an REP problem on my C5! Installed an LSX 447 with an F1X pro charger making over 1000 RWHP but kept getting an REP light any time I went to full throttle! We tried everything new TPS switch, Numerous throttle bodies and endless amount f time with a multimeter and nothing helped! We bought Nick Williams throttle bodies, the one made for a supercharger! Did not help. Wasted 750.00$ We finally tried a LS2 throttle body and the problem went away for the most part and no REP! I occasionally get an REP light but it only happens when the car loses traction and blows the tires off and then sometimes it will go into REP! It is very frustrating! Try an LS2 throttle body and see if it helps?
