INSTRUMENT CLUSTER UPRADE
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Joined: Apr 2007
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INSTRUMENT CLUSTER UPRADE
I HAVE A 86 CAMARO 'PLAIN', 305 CARB,700R4, THAT I HAVE UPGRADED TO THE 145 MPH SPEEDO, TACH AND GAGES. 'ALL' OF THE OEM CLUSTER, WORKED PRIOR TO UPGRADE, BUT ALL DID NOT, AFTER THE SWAP OUT. MY FUEL GAGE STAYS PEGGED OUT ON FULL. TRIED 2 OTHER KNOWN GOOD FG'S, AND SAME RESULT! THE OEM 'BIG' FUEL GAGE WORKED FINE, IS THERE A DIFFERENCE IN THE FUEL SENDING UNITS OR A MOD THAT I'M UNAWARE...HELP, BOYZ GONNA RUN OUTTA GAS SOONER OR LATER
THANKS!
THANKS! 
Supreme Member
Joined: Feb 2004
Posts: 1,581
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From: So Cal
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: INSTRUMENT CLUSTER UPRADE
First lose the CAPS.
The fuel gauge reads Full when it sees 90 ohms or more. If it stays on full then there must be an open circuit somewhere from the sending unit to the cluster. Since you changed the cluster that's where I start looking. Remove the cluster and reinstall it making sure to seat the 2 connectors properly.
If those connectors are not making good contacts the gauges will do crazy things.
Good Luck
The fuel gauge reads Full when it sees 90 ohms or more. If it stays on full then there must be an open circuit somewhere from the sending unit to the cluster. Since you changed the cluster that's where I start looking. Remove the cluster and reinstall it making sure to seat the 2 connectors properly.
If those connectors are not making good contacts the gauges will do crazy things.
Good Luck
Last edited by ringo234; Apr 12, 2007 at 10:53 PM.
Supreme Member
Joined: Jan 2003
Posts: 1,931
Likes: 1
From: Ontario, Canada
Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Re: INSTRUMENT CLUSTER UPRADE
I did the swap and had no issues... So I think there may be somethnig wrong .
Good luck man !
Good luck man !
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