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#1 |
![]() Join Date: Jun 2006
Location: Santa Maria, Ca
Posts: 8
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Looks like I have the flickering lights, bouncing amp meter gauge syndrome. I did a test on the alternator and it appears to be bad. I just R/R'ed the plenum for a tuneup and replacement of some bad injectors. The plenum has been on only one week. Would I need to get new plenum gaskets, again? or can I carefully lift the plenum, do the alternator swap and reuse the gaskets? Any recommendations on Alternators or should I try to rebuild it and the voltage regulator?
Thanks, Dave |
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#2 |
![]() Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,168
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I changed the one on the 90 I used to have and only removed the horn from the front of the TB
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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#3 |
![]() Join Date: Mar 2004
Location: Sacramento, CA.
Posts: 141
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Mine quit while on a cross country trip. Like We Gone the mechanic was able to replace it by removing the front section. Be careful there is a gasket there also.
Good Luck
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#4 |
![]() Join Date: Jun 2006
Location: Santa Maria, Ca
Posts: 8
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I just took the air horn off (carefully), took the bolts out of both brackets and removed them completely from the engine. Then came the oil sensor. It has to be removed with an extra long 27mm socket. The correct tool would make it a snap, but some channel locks were just enough to loosen it to take it out by hand. Disconnected all the wiring and out it came from the front. Thanks for the suggestions.
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#5 |
![]() Join Date: Jun 2006
Location: Santa Maria, Ca
Posts: 8
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Ok, had the alternator bench tested and it tested GOOD. Great, now I'm an expert at alternator R/R.
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#6 |
![]() Join Date: Mar 2004
Location: Sacramento, CA.
Posts: 141
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Are you noticing the problem while in the garage? This got my attention also, it was the ambient light in the garage was to low. Does the dash light up when you turn the head lights on? If so try this, With the head lights off shine a flash light into the light sensor. On my ’90 it is just to the left of the words “trip monitor†on the IP. I hope this is all it is.
Good Luck |
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#7 |
Guest
Posts: n/a
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Check the positive post that sits behind the battery for the interior power. It tends to get all gummed up after a while. Clean it all up and sand the connectos a bit and install with some dielctic grease.
The other thing to do is to check the dash light intensity switch with some resistors. |
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#8 |
![]() Join Date: Jun 2006
Location: Santa Maria, Ca
Posts: 8
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The "new" alternator is in - car runs great - but the dash lights are "out" unless I turn on the park lamps. Then I can see what's going on. The battery is at 12 volts - engine not running and 14.2 engine running - the alternator works and is stable. That was last night.
This morning I went out to the shop to check the CCM codes using the ALDL connector jumping the A & G terminals to see if I could pin point a problem in the display circuitry. When I opened the car door (key was in the ignition) the interior lights illuminated (normal) the chime started going "Off" and I mean off crazy and the dash light circuit began to cycle with the park lights and they were all flashing together. Once I closed the door and the interior lights went out the chiming and light flashes went out. I was able to check codes -the only one present is the C12 thats expected since it entered the troubleshooting mode. Pretty weird situation and I'm sure there is a gremlin in there somewhere. Can someone shed some light on this? I'm really getting to know this car - I think it's alive! Thanks Dave |
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#9 |
![]() Join Date: Jun 2006
Location: Santa Maria, Ca
Posts: 8
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You're all gonna love this... It was my afermarket alarm system going nuts because one of the chirp alarm wires was disconnected. It indicated a intrusion alarm (Zone 3 - hardware fault) and whenever the door opened and the door ajar sensor activated - it would go into a three flash routine indicating the systems integrety was violated. So much for that problem.
As for the panel lights - I opened the garage door and let some "real" light into the shop and they worked perfectly. They are not flickeing as before since the alternator is replaced. Those that responded - you were are right on target. My shop is very bright with some super bright flourecesent lighting - almost hospital operating room quality. Amazing, the sensor probably thought it was so bright the back lit dash didn't need to come one. Now to tackle the CD changer not working... Here we go again... Thanks Dave |
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