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1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER


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RUBEN209
New User

Nov 18, 2006, 2:14 PM

Post #1 of 5 (1510 views)
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1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER Sign In

Hello.

Recently, I started my car and the instrument cluster did not light up. The instrument cluster is digital and consists of the following gauges:
  • Tachometer
  • Speedometer
  • Water Temp.
  • Oil Pressure
  • Electrical
  • Fuel
  • Odometer

The power windows simultaneously stopped working as well. I have replaced the ignition lock cylinder assuming that it may be the problem since I had been having some difficulty turning the key. Also, the rear hatch motor is no longer working although I am not sure if this occurred at the same time as the rest of the previously mentioned problems. Any advice would be appreciated.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 18, 2006, 3:59 PM

Post #2 of 5 (1507 views)
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Re: 1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER [In reply to] Sign In

Well that stinks!!

The only couple ideas I have is that they all need power and ground. The trunk motor should work without the key so I'm doubting the ignition right now.

See if you can find any broken ground straps between engine block and body of car. For a test try using jumper cables between engine and body.

Another thing that happened to me is the power block on the firewall side underhood will be near fuse box and with I think just one nut or bolt and a main power to the car (GM Van in this case) just wasn't making a connection. Before I would take that off just try twisting on it and if that makes a difference problem sure could be right there. The fix was to give a slight twist to the spade connectors - regrease it up and I never heard of another problem with that van.

Just some thoughts but hang in there others may have more ideas, Good luck, T
_________________________________________
Long retired now


RUBEN209
New User

Nov 23, 2006, 2:31 PM

Post #3 of 5 (1497 views)
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Re: 1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER [In reply to] Sign In

Thanks for the suggestions. I will certainly try it over this holiday weekend. I'll let you know if it works.


RUBEN209
New User

Nov 24, 2006, 5:13 PM

Post #4 of 5 (1488 views)
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post icon Re: 1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER [In reply to] Sign In

Hi Tom, i have a little more info today about my electrical problem. I have checked with a tester and the following fuses are not lighting up.
CLSTR
CRANK
C/H-FAN
INST LPS
HTR A/C

I checked it with the ignition key on. I also replaced with other fuses and had no change. Does this help narrow down the search field? Any suggestions from anyone would be appreciated


steve01832
Veteran
steve01832 profile image

Nov 26, 2006, 5:47 AM

Post #5 of 5 (1477 views)
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Re: 1988 PONTIAC TRANS AM- DIGITAL INSTRUMENT CLUSTER [In reply to] Sign In

If the fuses aren't getting power then you may have some open fusible links. At the starter solenoid you should have a cluster of small wires going to a post. These are the fuse links. A lot of times the wires burn inside the insulation and they look o.k. One way to tell is to wiggle the wires around and bend them. If the wire feels like it is made of Jello then you need to start replacing the links. Make sure you use Fusible Link Wire and that it is the same guage as the original wire. Fuse link wire is designed to burn up harmlessly in the case of circuit overload. If you use regular wire then you risk having a fire under the hood if this happens again. Good luck and keep us posted.

Steve




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