Please help diagnose some problems
01-13-2007, 04:45 PM
#1
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Please help diagnose some problems Reinstalled a rebuilt LT1 into a 97 bird. Here are the issues I'm having and what I have done.
All plugs are plugged in.
Ground wires have been gone through and rechecked.
All fuses have been checked.
Battery has good power.
Motor turns over fine.
I get spark from the coil.
I do NOT hear the fuel pump come on.
I checked the wires to the fuel pump relay under the kick panel. I get power all the time to 2 wires. Only 7 volts to the plug in the back near the tank.
When I connect the battery, it seems that something is pulling a fairly good draw on it due to the small spark emmited when connecting the battery. (After rechecking, it seems it's only the headlight motors clicking)
With the key OFF I get an ABS INOP light, a CHECK GAUGES light, and a LOW OIL light.
Turning the key on, these lights go out and the normal lights come like they are supposed to.
NONE of the gauges work when the key is on.
I pulled the pcm back out to check the plugs. 1 of the pins came out of the pcm with the connector. It looked like it had kinda been burnt. I traced it and it is #C32 PCM GROUND. (With the connector unplugged, I am showing 12v at the pin location on the connector.)
I checked the entire engine harness and no wires are crimped or pinched.
Could that pin be related to the whole problem?
How would that pin have shorted?
Any help on this would be much appreciated.
All plugs are plugged in.
Ground wires have been gone through and rechecked.
All fuses have been checked.
Battery has good power.
Motor turns over fine.
I get spark from the coil.
I do NOT hear the fuel pump come on.
I checked the wires to the fuel pump relay under the kick panel. I get power all the time to 2 wires. Only 7 volts to the plug in the back near the tank.
When I connect the battery, it seems that something is pulling a fairly good draw on it due to the small spark emmited when connecting the battery. (After rechecking, it seems it's only the headlight motors clicking)
With the key OFF I get an ABS INOP light, a CHECK GAUGES light, and a LOW OIL light.
Turning the key on, these lights go out and the normal lights come like they are supposed to.
NONE of the gauges work when the key is on.
I pulled the pcm back out to check the plugs. 1 of the pins came out of the pcm with the connector. It looked like it had kinda been burnt. I traced it and it is #C32 PCM GROUND. (With the connector unplugged, I am showing 12v at the pin location on the connector.)
I checked the entire engine harness and no wires are crimped or pinched.
Could that pin be related to the whole problem?
How would that pin have shorted?
Any help on this would be much appreciated.
01-13-2007, 05:07 PM
#2
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if you burnt anything at the PCM you will have problems. The PCM controls everything in the car. Any surge in the power or short in the wiring to the PCM and thye are done for. They are VERY brittle pieces.
