Need Help, Electrical Nightmare
Thread Starter
Instructor
Joined: Apr 2005
Posts: 165
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Need Help, Electrical Nightmare
Cliffs notes at bottom if you don't want to read it all, just need help.
It is 5 am and I just finished installing my new clutch in my 03 Z06 a couple hours ago. I finished up and started the car and it seemed to be running odd and I was getting an SES light, I throttled it a little and knew right away it was the 02's being crossed. I switched them and restarted it and it ran fine. I reset the SES light and it stayed off.
So I am driving it around heat cycling the clutch and wearing it in a little and when I went to take off from a dead stop it cut off. I tryed restarting it and nothing. I tried and tried to restart it but the best I could get out of it was a little bit of dieseling and it would never fire. I am almost positive it isn't getting spark. I checked all the plug wires and sensors on the top and they are all plugged in. After several tries to start it, it started freaking out and throwing codes and alerts. I got a Service traction control, SES, and another traction warning. Then I get out to let it sit for a minute and walk inside Food Lion and when I hit the lock button the car acts like I hit panic with flashing lights and horn. The last thing I discovered was when you hit a turn signal with the key in the on position all of the interior lights flash each time the turn signal turns off.
The problem is that the header contacted the starter and it arced like hell during the clutch install. Someone confirm my fears that the PCM is fried or give me other ideas.
Cliffs Notes: Installed clutch and accidentally touched header to starter causing arcing. Car started fine after I got my 02's right and code went away. Now it cut off and won't run and throws multiple codes such as SES, Service traction contol, and another traction code. If you lock the doors with the remote horn honks and light flash. Using turn signal causes interior lights to flash. Is the PCM fried?
TIA to anyone that can help me, Kraig.
It is 5 am and I just finished installing my new clutch in my 03 Z06 a couple hours ago. I finished up and started the car and it seemed to be running odd and I was getting an SES light, I throttled it a little and knew right away it was the 02's being crossed. I switched them and restarted it and it ran fine. I reset the SES light and it stayed off.
So I am driving it around heat cycling the clutch and wearing it in a little and when I went to take off from a dead stop it cut off. I tryed restarting it and nothing. I tried and tried to restart it but the best I could get out of it was a little bit of dieseling and it would never fire. I am almost positive it isn't getting spark. I checked all the plug wires and sensors on the top and they are all plugged in. After several tries to start it, it started freaking out and throwing codes and alerts. I got a Service traction control, SES, and another traction warning. Then I get out to let it sit for a minute and walk inside Food Lion and when I hit the lock button the car acts like I hit panic with flashing lights and horn. The last thing I discovered was when you hit a turn signal with the key in the on position all of the interior lights flash each time the turn signal turns off.
The problem is that the header contacted the starter and it arced like hell during the clutch install. Someone confirm my fears that the PCM is fried or give me other ideas.
Cliffs Notes: Installed clutch and accidentally touched header to starter causing arcing. Car started fine after I got my 02's right and code went away. Now it cut off and won't run and throws multiple codes such as SES, Service traction contol, and another traction code. If you lock the doors with the remote horn honks and light flash. Using turn signal causes interior lights to flash. Is the PCM fried?
TIA to anyone that can help me, Kraig.
Drifting
Joined: Oct 2004
Posts: 1,384
Likes: 8
From: Southwest Virginia
Sounds to me like a ground problem since it is slinging so many codes. Check and make sure you reattached all the ground cables, specially any that go from the engine to the frame. These computer controls don't like voltage differentials at all! If you have missing grounds it will drive all the computers nuts.
Things to try:
First I would take a jumper cable and clamp it on the engine block and something on the frame and see if it will start and run. That would check missing grounds between the engine and frame but not grounds from the wiring harness.
Second check to see if you have spark. Stick a phillips screw driver in a plug wire and hold it 3/8" from a metal part of the engine and crank it over and see if you have spark. The crank angle sensor is on the right side near the starter and if you damaged or burnt the wires it does control the spark and fuel. Would cause it not to run but would not cause all those codes.
Good luck!
Your PCM is probably fine, the spark from the starter shouldn't have hurt anything since it did start and run after that. It really sounds like a missing or bad ground somewhere.
Things to try:
First I would take a jumper cable and clamp it on the engine block and something on the frame and see if it will start and run. That would check missing grounds between the engine and frame but not grounds from the wiring harness.
Second check to see if you have spark. Stick a phillips screw driver in a plug wire and hold it 3/8" from a metal part of the engine and crank it over and see if you have spark. The crank angle sensor is on the right side near the starter and if you damaged or burnt the wires it does control the spark and fuel. Would cause it not to run but would not cause all those codes.
Good luck!
Your PCM is probably fine, the spark from the starter shouldn't have hurt anything since it did start and run after that. It really sounds like a missing or bad ground somewhere.
Thread Starter
Instructor
Joined: Apr 2005
Posts: 165
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Originally Posted by SpeedyZ
Sounds to me like a ground problem since it is slinging so many codes. Check and make sure you reattached all the ground cables, specially any that go from the engine to the frame. These computer controls don't like voltage differentials at all! If you have missing grounds it will drive all the computers nuts.
Things to try:
First I would take a jumper cable and clamp it on the engine block and something on the frame and see if it will start and run. That would check missing grounds between the engine and frame but not grounds from the wiring harness.
Second check to see if you have spark. Stick a phillips screw driver in a plug wire and hold it 3/8" from a metal part of the engine and crank it over and see if you have spark. The crank angle sensor is on the right side near the starter and if you damaged or burnt the wires it does control the spark and fuel. Would cause it not to run but would not cause all those codes.
Good luck! Your PCM is probably fine, the spark from the starter shouldn't have hurt anything since it did start and run after that. It really sounds like a missing or bad ground somewhere.
Things to try:
First I would take a jumper cable and clamp it on the engine block and something on the frame and see if it will start and run. That would check missing grounds between the engine and frame but not grounds from the wiring harness.
Second check to see if you have spark. Stick a phillips screw driver in a plug wire and hold it 3/8" from a metal part of the engine and crank it over and see if you have spark. The crank angle sensor is on the right side near the starter and if you damaged or burnt the wires it does control the spark and fuel. Would cause it not to run but would not cause all those codes.
Good luck!
Your PCM is probably fine, the spark from the starter shouldn't have hurt anything since it did start and run after that. It really sounds like a missing or bad ground somewhere.I just got around to checking this, but you were right. A couple hours ago we found a ground wire near the back of the car that had come loose. I am just happy it is running again, thanks for the help.
