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Author
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Topic: Temp gauge peged on Hot (engine cold)
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Gary
Gearhead Posts: 700
From: Sarasota, Fla. USA
Registered: Jun 99
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posted 09-04-2001 04:13 PM
   
I started testing my wiring and things seem ok but my factory temp gauge. Engine hasn't run yet but when key is on acc. or on the needle on temp gauge pegs out to Hot. I tried it with and without the wire hooked to the sender on manifold, any ideas as to why it is doing this? grounding out somewhere possible? all wires are basicly new, grounds (ring connectors) on main harness were attached making sure there was clean shinny metal under all of them.
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Gary
Gearhead Posts: 700
From: Sarasota, Fla. USA
Registered: Jun 99
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posted 09-04-2001 04:51 PM
After some thought, the constant voltage regulator behind the dash cluster probably is or going bad. Really all I want to do is kill the factory gauge alltogher since I now have a nice autometer temp gauge in place of it. Having the needle pegged all the time on the guage would look stupid even though Im not using it. I DO NOT want to remove my dash top again! Getting it back on in the first place with roll cage going through the top was a real bitch of a job. Everything else works fine as far as I can tell at this point, the dash lights,wiper,headlight indicator, radio/CD etc. all work 
Just for reference, are these voltage regulators available if I do in fact have to change it out to fix the gauge from it maxed out position?
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7DMACH1
Gearhead Posts: 875
From: PHILA. PA.
Registered: Feb 2001
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posted 09-04-2001 05:04 PM
Gary, I think if the CVR was bad all of your gauges would be pegged. I think you have a wire grounded somewhere. RAY------------------
RAY THE PARTS MGR. AND WISE A@@ PHILLY GUY 70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG.
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Gary
Gearhead Posts: 700
From: Sarasota, Fla. USA
Registered: Jun 99
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posted 09-05-2001 08:14 AM
If I did have a grounding issue causing the temp. guage to do this (peg), how could I even check to find the problem? The gauge worked ok before I put a new top of engine harness on the car, all I did was plug in the new harness, from there it goes back to the printed circuit board on the dash cluster.
I double checked and wires are hooked up correctley.
This problem occurs even with the wire un-pluged from the temp sender..humm?
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SteveLaRiviere
Administrator Posts: 23085
From: Saco, Maine USA
Registered: May 99
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posted 09-05-2001 07:06 PM
Do you still have the old harness to try out?
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richard bohm
Gearhead Posts: 358
From: tucson,az-luray,va
Registered: May 2001
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posted 09-07-2001 06:50 PM
check the guage itself. it may be bad.
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