Electrical problems need help 2001 c5 corvette
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Electrical problems need help 2001 c5 corvette
Need help guys I have a 2001 c5 corvette m6 . Lately I been having some problems after tune . Moddifications
Full exhaust
Cold air intake
36# injectors
Ms4 cam
Spec clutch
So after tune car is going into reduce engine power Cheked cluster an this were the codes
P1637 hc
P0103 hc
P1571 hc
P1689 hc
P0106 c
P1514 hc
P1638 hc
So for the p0106 (map sensor ) I found I had a vaccum leak gromet was warn out . the one on the map sensor so I replaced the map sensor an it comes wit new gromet . Thinking that was the problem for the reduce engine power an nope still popd up an it will shut car down an won't let me turn it on wit out removing the codes so I started cleaning some of the grounds up front behind the head lights an nothing changed so I didn't use car for couple days an this weekend I took it out for a drive an noticed it threw me new codes
P0135 c
P0155 c
O2 sensors an service colum lock . I had dat problem before modification when my steering colum locked on me an I used the LM7 kit to realese the steering colum by jumping wires in the bcm . so 2 months ago I replace the clutch an just notice when car is off no key in ignition if I press the brake the cluster lights shut down an check engine light come I can press an press foot brake an cluster light shuts off an chek engine light comes on an my rear brake lights work .
Full exhaust
Cold air intake
36# injectors
Ms4 cam
Spec clutch
So after tune car is going into reduce engine power Cheked cluster an this were the codes
P1637 hc
P0103 hc
P1571 hc
P1689 hc
P0106 c
P1514 hc
P1638 hc
So for the p0106 (map sensor ) I found I had a vaccum leak gromet was warn out . the one on the map sensor so I replaced the map sensor an it comes wit new gromet . Thinking that was the problem for the reduce engine power an nope still popd up an it will shut car down an won't let me turn it on wit out removing the codes so I started cleaning some of the grounds up front behind the head lights an nothing changed so I didn't use car for couple days an this weekend I took it out for a drive an noticed it threw me new codes
P0135 c
P0155 c
O2 sensors an service colum lock . I had dat problem before modification when my steering colum locked on me an I used the LM7 kit to realese the steering colum by jumping wires in the bcm . so 2 months ago I replace the clutch an just notice when car is off no key in ignition if I press the brake the cluster lights shut down an check engine light come I can press an press foot brake an cluster light shuts off an chek engine light comes on an my rear brake lights work .
Last edited by Gangsta_Vette; Feb 29, 2016 at 12:28 AM.
Thread Starter
Intermediate
Joined: Nov 2015
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Melting Slicks
Joined: Jul 2004
Posts: 3,294
Likes: 482
From: Brea CA
A couple of suggestions regarding vacuum leaks.
Inspect the PCV hoses, especially the Y fitting at the back of the manifold and at the actual PCV valve. In working on a friends 02 the short (about 1.5" hose) from the PCV to the intake manifold just behind the throttle body had deteriorated with many cracks in it. On another friends 2000 the Y and the back had deteriorated pretty bad. These lines go from the valve covers to the intake.
Also check the large vacuum line from the intake to the power brake booster.
After this it can get real fun. The small vacuum line at the back of the intake goes to the vacuum canister behind the passenger front fender passing close to the battery. If a previous battery had ever leaked there is the possibility that this vacuum line has been compromised. If it has one symptom would be problems with the ventilation system not changing between the defrost, center or floor vents. The control for the vents is all done with vacuum actuators. If this is the issue replace the hose, don't bother removing the old one since it is wrapped in the wiring harness.
If the above is the issue also inspect the wiring for damage. Some of your other errors could be caused by this.
Now for the codes you posted. I have grouped them as to how the are related.
P1637 - Generator L‐Terminal Circuit
P1638 - Generator F-Terminal circuit
P0103 - Mass Air Flow sensor circuit high frequency
P0106 - Manifold absolute pressure sensor performance
P1514 - Throttle body performance
P1571 - Torque signal is out of the valid range
P1689 - Delivered torque signal voltage is invalid
All of these do have one thing in common, the circuits for these systems go through the same wiring harness. The same harness that the vacuum line runs through passing under the battery.
I would start with the following;
1. disconnect the small vacuum line at the back of the manifold replacing it with a cap. Check to see if this corrects the P0106.
If this clears this error you have a bad vacuum line.
2. Pull the battery and inspect the battery tray and surrounding area. Look for white powdery residue. This will be the remnants of a battery leak. Pull the fender to allow better access to cleaning the area. Inspect the wiring carefully for damage. Look for wires with damage insulation or broken. Remove the PCM (it sits below the battery) and inspect for corrosion. The TAC module is attached to the PCM.
Gary
Inspect the PCV hoses, especially the Y fitting at the back of the manifold and at the actual PCV valve. In working on a friends 02 the short (about 1.5" hose) from the PCV to the intake manifold just behind the throttle body had deteriorated with many cracks in it. On another friends 2000 the Y and the back had deteriorated pretty bad. These lines go from the valve covers to the intake.
Also check the large vacuum line from the intake to the power brake booster.
After this it can get real fun. The small vacuum line at the back of the intake goes to the vacuum canister behind the passenger front fender passing close to the battery. If a previous battery had ever leaked there is the possibility that this vacuum line has been compromised. If it has one symptom would be problems with the ventilation system not changing between the defrost, center or floor vents. The control for the vents is all done with vacuum actuators. If this is the issue replace the hose, don't bother removing the old one since it is wrapped in the wiring harness.
If the above is the issue also inspect the wiring for damage. Some of your other errors could be caused by this.
Now for the codes you posted. I have grouped them as to how the are related.
P1637 - Generator L‐Terminal Circuit
P1638 - Generator F-Terminal circuit
P0103 - Mass Air Flow sensor circuit high frequency
P0106 - Manifold absolute pressure sensor performance
P1514 - Throttle body performance
P1571 - Torque signal is out of the valid range
P1689 - Delivered torque signal voltage is invalid
All of these do have one thing in common, the circuits for these systems go through the same wiring harness. The same harness that the vacuum line runs through passing under the battery.
I would start with the following;
1. disconnect the small vacuum line at the back of the manifold replacing it with a cap. Check to see if this corrects the P0106.
If this clears this error you have a bad vacuum line.
2. Pull the battery and inspect the battery tray and surrounding area. Look for white powdery residue. This will be the remnants of a battery leak. Pull the fender to allow better access to cleaning the area. Inspect the wiring carefully for damage. Look for wires with damage insulation or broken. Remove the PCM (it sits below the battery) and inspect for corrosion. The TAC module is attached to the PCM.
Gary
Thread Starter
Intermediate
Joined: Nov 2015
Posts: 33
Likes: 0
A couple of suggestions regarding vacuum leaks.
Inspect the PCV hoses, especially the Y fitting at the back of the manifold and at the actual PCV valve. In working on a friends 02 the short (about 1.5" hose) from the PCV to the intake manifold just behind the throttle body had deteriorated with many cracks in it. On another friends 2000 the Y and the back had deteriorated pretty bad. These lines go from the valve covers to the intake.
Also check the large vacuum line from the intake to the power brake booster.
After this it can get real fun. The small vacuum line at the back of the intake goes to the vacuum canister behind the passenger front fender passing close to the battery. If a previous battery had ever leaked there is the possibility that this vacuum line has been compromised. If it has one symptom would be problems with the ventilation system not changing between the defrost, center or floor vents. The control for the vents is all done with vacuum actuators. If this is the issue replace the hose, don't bother removing the old one since it is wrapped in the wiring harness.
If the above is the issue also inspect the wiring for damage. Some of your other errors could be caused by this.
Now for the codes you posted. I have grouped them as to how the are related.
P1637 - Generator L‐Terminal Circuit
P1638 - Generator F-Terminal circuit
P0103 - Mass Air Flow sensor circuit high frequency
P0106 - Manifold absolute pressure sensor performance
P1514 - Throttle body performance
P1571 - Torque signal is out of the valid range
P1689 - Delivered torque signal voltage is invalid
All of these do have one thing in common, the circuits for these systems go through the same wiring harness. The same harness that the vacuum line runs through passing under the battery.
I would start with the following;
1. disconnect the small vacuum line at the back of the manifold replacing it with a cap. Check to see if this corrects the P0106.
If this clears this error you have a bad vacuum line.
2. Pull the battery and inspect the battery tray and surrounding area. Look for white powdery residue. This will be the remnants of a battery leak. Pull the fender to allow better access to cleaning the area. Inspect the wiring carefully for damage. Look for wires with damage insulation or broken. Remove the PCM (it sits below the battery) and inspect for corrosion. The TAC module is attached to the PCM.
Gary
Inspect the PCV hoses, especially the Y fitting at the back of the manifold and at the actual PCV valve. In working on a friends 02 the short (about 1.5" hose) from the PCV to the intake manifold just behind the throttle body had deteriorated with many cracks in it. On another friends 2000 the Y and the back had deteriorated pretty bad. These lines go from the valve covers to the intake.
Also check the large vacuum line from the intake to the power brake booster.
After this it can get real fun. The small vacuum line at the back of the intake goes to the vacuum canister behind the passenger front fender passing close to the battery. If a previous battery had ever leaked there is the possibility that this vacuum line has been compromised. If it has one symptom would be problems with the ventilation system not changing between the defrost, center or floor vents. The control for the vents is all done with vacuum actuators. If this is the issue replace the hose, don't bother removing the old one since it is wrapped in the wiring harness.
If the above is the issue also inspect the wiring for damage. Some of your other errors could be caused by this.
Now for the codes you posted. I have grouped them as to how the are related.
P1637 - Generator L‐Terminal Circuit
P1638 - Generator F-Terminal circuit
P0103 - Mass Air Flow sensor circuit high frequency
P0106 - Manifold absolute pressure sensor performance
P1514 - Throttle body performance
P1571 - Torque signal is out of the valid range
P1689 - Delivered torque signal voltage is invalid
All of these do have one thing in common, the circuits for these systems go through the same wiring harness. The same harness that the vacuum line runs through passing under the battery.
I would start with the following;
1. disconnect the small vacuum line at the back of the manifold replacing it with a cap. Check to see if this corrects the P0106.
If this clears this error you have a bad vacuum line.
2. Pull the battery and inspect the battery tray and surrounding area. Look for white powdery residue. This will be the remnants of a battery leak. Pull the fender to allow better access to cleaning the area. Inspect the wiring carefully for damage. Look for wires with damage insulation or broken. Remove the PCM (it sits below the battery) and inspect for corrosion. The TAC module is attached to the PCM.
Gary
