1991 instrument cluster
Thread Starter
Racer
Joined: Apr 2004
Posts: 250
Likes: 0
From: Binghamton NY
1991 instrument cluster
I have an intermitent problem with my instrument cluster. It works most of the time but occasionally blacks out only to come back on if I hit a bump in the road. I have a 6-speed and I learned that the cluster is different in automatics. Does anyone have repair advice or know of someone selling one?
Thanks alot
Tom
Thanks alot
Tom
Advanced
Joined: Nov 2010
Posts: 77
Likes: 0
From: Richmond Kentucky
I have a 91 automatic but mine is doing the same thing . I found the ground strap that goes from the frame to the bell housing was missing so I am hopeful that solved the problem however I have the TPI all apart right now to replace injectors (and polish everything I can find )
Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
I had an intermittent issue with mine...the grounding nut had come loose. Check that ground...on the drivers side, 3rd bolt up on the bell housing. Either it is loose, or one of your grounds broke from the solderless connector.
Good Luck
Edit: ALL the grounds terminate @ a single point on the body...like I said, my dash did the same thing but was intermittent under load. Those grounds all terminate on your bellhousing, with a ground strap going from there to the chassis. Check them out closely (and a real PITA if you don't have a lift handy, or long-tube headers in the way
). Make sure some of the wires didn't break, etc. I'd check there first. It's a LOT easier than ripping the dash apart. If they are all solid, then move on to the dash cluster connections as mentioned here.Intermittent problems are the ones I hate the most. It's easy to find if it just stops working.
Good luck...
Last edited by 1991Z07; Apr 14, 2011 at 11:41 AM.
Instructor
Joined: Jun 2008
Posts: 173
Likes: 0
From: Norman OK
By blanking, do you mean the just the LCD, or the gauges as well?
I agree, it could be the G106 ground as stated, but....
If it's just the LCD, it plugs in to a short (about 1" long) wiring harness with a connector on the IP circuit board. Over time, the connector gets worn and/or the pins on the lcd get corroded.
If it's LCD and gauges, the IP cluster plug in connector on the dash can get weak contacts.
Either way.. If it's not a grounding issue, some disassembly required. The IP cluster needs to come out.
On my 91, my LCD connector was worn, but I was able to repair it by sliding small pieces of wire in next to the pins to tighten up the contact. (Full disclousure - I used aircraft .020 safety wire inserted through the back of the connector, like backprobing). It,s been rock solid for well over a year and I didn't have to sent the circuit board off for repair.
I agree, it could be the G106 ground as stated, but....
If it's just the LCD, it plugs in to a short (about 1" long) wiring harness with a connector on the IP circuit board. Over time, the connector gets worn and/or the pins on the lcd get corroded.
If it's LCD and gauges, the IP cluster plug in connector on the dash can get weak contacts.
Either way.. If it's not a grounding issue, some disassembly required. The IP cluster needs to come out.
On my 91, my LCD connector was worn, but I was able to repair it by sliding small pieces of wire in next to the pins to tighten up the contact. (Full disclousure - I used aircraft .020 safety wire inserted through the back of the connector, like backprobing). It,s been rock solid for well over a year and I didn't have to sent the circuit board off for repair.
Last edited by OkieC4; Apr 12, 2011 at 02:50 PM.
Thread Starter
Racer
Joined: Apr 2004
Posts: 250
Likes: 0
From: Binghamton NY
I mean it goes kaput nothing on any gauge.
Does anyone know for sure if a gauge cluster from an automatic will work in a 6sp given it's the same 90-91 years?
Thanks for all the advice.
Does anyone know for sure if a gauge cluster from an automatic will work in a 6sp given it's the same 90-91 years?
Thanks for all the advice.
Instructor
Joined: Jun 2008
Posts: 173
Likes: 0
From: Norman OK
Yes, they should be interchangable..
But if it blanks then comes back when you hit a bump in the road, you most probably have a contact problem where the IP cluster plugs in to the dash connector.
Pull the cluster, check and clean the pins on the cluster and the sockets on the dash connector. On the lower row, left to right, A1 is the ground, A3 and A4 are power feeds from your CLSTR fuse.
But if it blanks then comes back when you hit a bump in the road, you most probably have a contact problem where the IP cluster plugs in to the dash connector.
Pull the cluster, check and clean the pins on the cluster and the sockets on the dash connector. On the lower row, left to right, A1 is the ground, A3 and A4 are power feeds from your CLSTR fuse.
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 278
From: Melbourne, Victoria, Australia
Hi
Batee is the guru of corvette dash problems, be it early or late C4's check out his website and scroll down he has lots of information available.
http://www.batee.com
Batee is the guru of corvette dash problems, be it early or late C4's check out his website and scroll down he has lots of information available.
http://www.batee.com
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Advanced
Joined: Jul 2014
Posts: 50
Likes: 0
From: Portsmouth VA
Hi
Batee is the guru of corvette dash problems, be it early or late C4's check out his website and scroll down he has lots of information available.
http://www.batee.com
Batee is the guru of corvette dash problems, be it early or late C4's check out his website and scroll down he has lots of information available.
http://www.batee.com
