Instrument Cluster

Started by tweety25, March 28, 2010, 07:53:05 PM

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tweety25

In the TGP's, is it a common thing for the cluster to stop working correctly? Also is it a wiring harness issue, or is it the actual cluster itself? My speedo and rpm gauges are both ridiculously high, but consistently high. And my oil pressure gauge freaks out pretty often. My gas gauge and turbo gauge are the only ones that work correctly. Thanks for any answers on this post.

Prospeeder

yea these clusters are junk. Surprised you dont have the flickering check gauges and low fuel light too. My gas gauge is the only one that works poorly as well as the speedo reading a few mph higher than the HUD. Somebody on here might have another one. Even brand new ones have popped up on ebay before. I think some people have had good luck sending them off to a company and having them rebuilt. Youd have to search around.
1990 TGP Chipped RU-1390 K&N
2001 Audi S4 Stage 2
1999 VW Beetle
1997 BMW 740iL

tweety25

Yeah I actually do have the check gauges light going on and off randomly. And I have my antilock light flashing too. But that's a whole different problem.

Prospeeder

My check gauges flickered when i got the car. Theres a little set of pins you resolder and it fixes it. Its on the w-body.com site. But all the gauges being off is somthing that only an electronics shop can recalibrate or what ever they do
1990 TGP Chipped RU-1390 K&N
2001 Audi S4 Stage 2
1999 VW Beetle
1997 BMW 740iL

Dark Ride

there was a write-up on how to fix both the spedo and the flickering fuel/check gauges light on w-body, but they just redid it and I don't know if its still there.
-Mitch Reed
1998 Pontiac Grand Prix Supercharged
Some Modifications
1990 Turbo Grand Prix
Restoration In Progress
Quote from: grinders_18 on July 24, 2007, 07:31:07 PM
Yeah, I just couldn't figure out a way to work in the one member who claimed that adding a valance to his lightbulb kept it from overheating...

tweety25

Alright thanks a lot guys. I'll do some more research and find out what I can do to fix everything

manifoldsrme

Post up any fixes you do make. I know my gauges are everything except accurate.
1990 TGP

White93z34

For the time being I changed out my cluster for a normal GP sport cluster. it is all plug and play. I just took it apart and put my whole odometer assembly in it. You have to remove and re-solder the little wiring harness pigtail on the top to the new cluster so the HUD works.

I fixed the check gauges and fuel lamps on it while I had it apart, and for once my speed and tach are right on. I miss the little INTERCOOLED TURBO thing on it, but having a battery gauge is nice as the boost gauge is basically worthless.
-Chris D.


1992 Chevrolet Lumina Z34 3.4L TDC Hydramatic 4T60E
1990 Pontiac Turbo Grand Prix 3.1L v6 Hydramatic 4T60
1997  Pontiac Bonneville SSE 3.8L v6, Hydramatic 4T60E
1987 Chevrolet Camaro 5.0L v8, Hydramatic 700R4

GPChief

I've rebuilt two clusters, using basic clusters and putting these parts in the TGP cluster.  This, combined with soldering of the broken contacts fixes them well.
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

tweety25

GPChief-
Can you explain w/ a little more detail how you did that? What clusters did you use, etc.?

Thanks

-Jordan

GPChief

I took my TGP cluster, and a regular GP cluster both apart on a table.  IIRC the speedometer pulls right out I just swapped them.  I then found the break in the connection for the check engine lights and took a pencil tip soldering iron and fixed it. There is a detailed write up on  w-body.com.
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.