Dead 964 - need help
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Gang,
I gotta dead '89 C4. Trying to troubleshoot but coming up empty.
Here's the backstory: Saturday I noticed my D/S front running light was not operating. I pulled out the light assembly to check illumination on the bulb. The Bulb was fine. I figured it was a bad fuse, so I checked that also. I pulled a few fuses and they were fine. I decided not to proceed further because I could not find my spare fuse kit. I left it that I would revisit the issue once I got a chance to run out to the auto supply store and stock up. I reinstalled the fuses and closed up.
Today, I tried to get to work and there was nothing. No interior lights. Totally dead. I hooked up my trickle charger and there was no light emitted on the diode, which is not normal. I pulled off the fuse panel to make sure there were no misfitted fuses or any loose relays. All seemed normal. I pulled the #41 and #40 fuses as a test and no light came on on the tester. This would indicate that the fuses were bad, but they looked fine and WERE fine 72 hours ago. I checked other fuses. All dead, with the exception of #11.
What gives? Any ideas? Help!!
Thanks, all
ketel
I gotta dead '89 C4. Trying to troubleshoot but coming up empty.
Here's the backstory: Saturday I noticed my D/S front running light was not operating. I pulled out the light assembly to check illumination on the bulb. The Bulb was fine. I figured it was a bad fuse, so I checked that also. I pulled a few fuses and they were fine. I decided not to proceed further because I could not find my spare fuse kit. I left it that I would revisit the issue once I got a chance to run out to the auto supply store and stock up. I reinstalled the fuses and closed up.
Today, I tried to get to work and there was nothing. No interior lights. Totally dead. I hooked up my trickle charger and there was no light emitted on the diode, which is not normal. I pulled off the fuse panel to make sure there were no misfitted fuses or any loose relays. All seemed normal. I pulled the #41 and #40 fuses as a test and no light came on on the tester. This would indicate that the fuses were bad, but they looked fine and WERE fine 72 hours ago. I checked other fuses. All dead, with the exception of #11.
What gives? Any ideas? Help!!
Thanks, all
ketel
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Assuming I get one, how best to troubleshoot? I read in Adrian's 964 book to hook it up to the battery terminals and pull each fuse to see if the voltage drops?
Even if I pinpoint, how do I resolve the issue?
thanks.
ketel
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Yep, you'll want to eventually check the fuses, but first see if the battery has any charge at all. Get a meter. Then we can get back to the bennett/hawk show on the rest of your repairs...
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I believe you still need battery power for the fuse tester to work, so that fact that the fuse light did not illuminate does not necessarily mean the fuse/relay is bad.
I had a similar problem a few months ago, and it turned out my heater blower relay went bad, which caused the blower to run continually until the battery was dead.
I had a similar problem a few months ago, and it turned out my heater blower relay went bad, which caused the blower to run continually until the battery was dead.
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When you get a multimeter, check voltage across the battery's posts. You need a minimum of 12.5 volts for the car to start, higher is better (around 13 or a little bit more). When the car is running at a high idle (around 2,000 rpm), the battery voltage should be around 14, indicating that the battery is being charged. If the battery voltage is low, try putting the battery on a charger for a few hours (overnight is good) then test it again.