Flakey Dash Ground
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New User
Joined: Sep 2004
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Flakey Dash Ground
94' E350, Dual A/C. When I run fans, Temp and Oil gauges climb in direct proportion w/ fan speed. Cleaned body ground from harness behind driver's kick panel, Pulled cluster and cleaned thick film connectors, still the same.
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Joined: Aug 2004
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For what it's worth, had the same problem with an '85, so this might help. Check the ground strap from battery to frame and ensure you are getting a good connection. Cleaned mine up and the problem went away immediately.
Lead Driver
Joined: Feb 2003
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From: Oak Harbor, OH
My '92 did it too.. I think it's in the way the gauges are powered. My volt meter would also climb. On a long trip it would start out in the middle of the gauge, and work it's way up to the high end of the normal range.
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Thanks Guys,
I bought OEM electrical trouble shooting manual for the 94' Econoline. Traced and cleaned every single ground and all power distribution circuits. Problem improved but still lives. Took it to my local dealer, they gave up. (at least they didn't try to charge for nothing). When I want to know what the gauge is actually reading, I guess you have to trust them, they read normal w/ A/C off, I briefly turn the A/C off.
I bought OEM electrical trouble shooting manual for the 94' Econoline. Traced and cleaned every single ground and all power distribution circuits. Problem improved but still lives. Took it to my local dealer, they gave up. (at least they didn't try to charge for nothing). When I want to know what the gauge is actually reading, I guess you have to trust them, they read normal w/ A/C off, I briefly turn the A/C off.
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Joined: Nov 2004
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i have the same problem. my electrical ts manual (87 e150 302fi) pointed me to the IVR or instrument voltage regulator. not sure if you got one on your year but it causes gauges to freak out. i haven't replaced mine since i have no a/c and do not run the heat often. my year i believe it's located in the dash. good luck
