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Posted by: drew365 Aug 2 2003, 09:04 PM

I built a tri gauge about a year ago. Last week the pressure gauge started going all the way to the top when I turn power on. At first I thought it lost it's ground but the ground seems to be fine. Plus the temp and gas gauge use the same ground and they work fine. Anyone have a suggestion. The lead to the sender seems to be okay at both ends. Here's a pic of the gauge.


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Posted by: J P Stein Aug 2 2003, 09:44 PM

You have power & ground or the needle wouldn't move....WAG....the sensor.

Posted by: drew365 Aug 3 2003, 09:51 PM

I disconnected the sender and the gauge still goes all the way up when the key is turned on, so I'm sure it's not the sender. I can't find any bad wiring so I took the gauge out and will take it to N. Hollywood Speedometer in the morning. I should have gotten a new gauge in the first place instead of using a used one when I built the tri-gauge. It's a real PITA disassembling the gauge. I hope it's the last time.

Posted by: Dave_Darling Aug 3 2003, 10:09 PM

The wire from the sender to the gauge has shorted to ground somewhere.

--DD

Posted by: drew365 Aug 4 2003, 06:45 AM

Dave; I disconnected the sender at the gauge, so it can't be the wire to the sender.

Posted by: drew365 Aug 5 2003, 09:16 PM

I'm an idiot. Dave Darling, you da man! Rather than take your advise and check my sender wire which is only a year old, I took the gauge out twice, put in a new pressure module and sender. At that time there was nothing left to change except the sender wire, I found it was rubbing on the steering column. Fixed that and tied it off to the side and now the pressure gauge works. Live and learn, I hope.