Major problems....
Thread Starter
Instructor
Joined: Jul 2008
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Major problems....
I have been having an issue for a while now, the car used to say service traction control, and reduced engine powere and run limp at a top speed next to nothing. SO I had to pull over and unplug the harness for the tps and re plug it back in. Things worked fine doing that for a while. Then, one of my belts came off and ripped out the blue throttle wire, so.. I connected it back. It worked for a few days, then did the same. One of my friends came over with his snap on hand held and it ran for 3 days. On the 4th day, same thing.. Won't run worth a crap 
It's throwing codes p1120, p1221, c1278, c1160, and c2120. When I clear them from the dtc the p codes stay there. Here's a video of the car being stupid. http://s47.photobucket.com/albums/f1...90516-1140.flv
It's throwing codes p1120, p1221, c1278, c1160, and c2120. When I clear them from the dtc the p codes stay there. Here's a video of the car being stupid. http://s47.photobucket.com/albums/f1...90516-1140.flv
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Your having issues with the Throttle By Wire system. Specifically the Throttle Position Sensor, Sensor wiring harness and or connector. That is one of the things that will cause "Reduced Engine Power"
I strongly recommend that you carefully examine all that wiring, the connectors and the TB Motor wiring.
How did you reconnect the wires??? Please dont say wire splices.
BC
I strongly recommend that you carefully examine all that wiring, the connectors and the TB Motor wiring.
How did you reconnect the wires??? Please dont say wire splices.
BC
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You can use an ohm meter to read the sensor. A sensor that accurate is best to use an analog ohm meter but if you dont have one a digital one will do. Just move the arm slow enough to watch a smooth change on the meter.
There should ba a CONSTANT reading without any dips or spikes in the readings as the armature is moved. One side of the sensor is HIGH resistance going low and the other is low going HIGH
There should ba a CONSTANT reading without any dips or spikes in the readings as the armature is moved. One side of the sensor is HIGH resistance going low and the other is low going HIGH
Thread Starter
Instructor
Joined: Jul 2008
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Well, I replaced the tps and it didn't fix. I can't clear out all of the codes, 2 stay on when I clear them from the DIC and my friend brought his Modus home from work and we can't clear them from there either... p1120, and 1221 won't go away!!!
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Have you followed any of Bill's suggestions, or are you just swapping parts ?
Thread Starter
Instructor
Joined: Jul 2008
Posts: 154
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Is there a possibility that my aftermarket cam and heads are doing this? I haven't gotten a tune for it but I have been running it for about 5 months and haven't had any problems. I was getting the reduced engine power before but only 2 times and 8 months and it went away.
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Thread Starter
Instructor
Joined: Jul 2008
Posts: 154
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lets see... i tested it. it was fine. still replaced it to make sure my eyes were correct. didn't work. came back to ask more questions cause i hit a dead end... didn't ask for smart a$$ remarks, just an enthusiast with questions that doesn't wanna get raped by the dealer. i think there's a problem with the throttle actuator controll module?!? i think that's what it's called, it's in the psngr side behind the wheel well..
