20 Most Recent 1999 Cadillac Eldorado - Page 5 Questions & Answers

It will make a knocking noise.

Lmfao are you serious or are you just joking....

1) reset the ignition time according with the specification manufacturer, with the a/c turn on.and without a/c.Use the pistol TimingGod bless you

Sorry. Cant candy coat this one. Most likly have a head gasket problem along with a water pump leak. Check with your mechanic to be sure.

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check under the hood generaly have a sticker of this diagram.....

I suggest you use GM Tech2 diagnostic scanner check your car and clear fault code.

Google this. "passlock relearn procedure"

Under the carpet, near the gas pedal, there is a ground wire screwed in, and that connection is going to be corroded. Clean up the connection and be sure it is tight. I just went through this with my 97 Seville. Fixed every electrical problem I was having with lights flashing, gauges going crazy, etc...

Had this happen to my 95, had to disconnect the battery for 5 min to reset the compressor. Then after re-connecting, turn a/c on high to refill with refrigerant. Best of luck with your problem.

did you say scanner not powering up or you not getting any code.because if engine not firing a faulty crankshaft position sensor or ignition module will cause no spark conditions.also check 20 amp ignition fuse to ignition coils and ignition module,check ignition battery feed 10 amp fuse to the pcm.check at the 16 dlc terminal at top ground terminal 4 that would be fourth terminal top from left to right.and check bottom far right terminal 16 see if you getting getting battery power.if fuse all good no power at terminal 16 your pcm could be getting poor ground contact or problem in the pcm thats not a home fix dealership has to run diagnostic scan test look for pcm fault or wiring fault.

Hi Clark,The headlamp system in your Eldorado is controlled by the Body Control Module (BCM). Besides the light switch on the dash (which only provides grounds for certain BCM circuits) There are 10 different fuses, 5 relays, an ambient light sensor, a headlamp dimmer switch, the BCM and the Instrument Panel Cluster (IPC) involved in your headlamp circuits.You asked about an easy way to check the switch...The easiest way is to connect a scan tool and verify headlamp switch input at the BCM as you operate the switch and watch the BCM data.I recommend that you begin this diagnosis by scanning your computer network for fault codes that may lead you to the cause of the problem. Please note that MOST generic OBD scanners (code readers) cannot access the BCM or IPC data.