Question??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Old Dave · 10-28-2002, 04:12 PM

www.Fix-a-gauge.com
Has anyone heard of these folks? My temp gauge in my wife's 86 Suburban is pointing at 3 O'clock all the time. I've checked the sending unit and it's good and the engine is not hot. I haven't had time to go scrounge one at a salvage yard and it's not available from GM anymore (too old). They say they will fix 99% of the fuel, oil pressure, temp, voltmeters and amp gauges used on GM, IH trucks & buses, John Deere and Case tractors from 1969 to 1992. Prices are reasonable.

guitarman · 10-28-2002, 10:23 PM

I've not heard of them before but the site looks good, apparently they are doing well. I just thought I'd answer because no one else was. So you wouldn't feel ignored.

71GMC_3/4T · 10-28-2002, 11:57 PM

I'd start with trying to track down where it got broke in the wiring harness. Disconnect the wire. Measure the resistance between the disconnected wire and ground with the key off. It should be nearly open. If it's shorted, there's your problem. Also, see what the guage does with the sender wire disconnected. I can't tell you what it should do without going out to my newer Chevy and seeing what it does - sorry.

Guages usually don't go bad. If it goes back down to somewhere reasonable with the key off, the wire is probably shorted to ground, most likely in the engine compartment, but hey, who knows, maybe some radio tech hooked into that wire for a ground by accident?

Longhorn Man · 10-29-2002, 12:57 AM

Your temp guage wire is grounded out someplace...check on the exhaust manifold...it is probably a melted mess on there.

Old Dave · 10-29-2002, 09:31 AM

I'm reasonablly sure it's the gauge because I disconnected the wire at the sending unit and measured the voltage and it was about 1.2 VDC. Checked the resistance of the temp. sender and it measured within 100 ohms of the one on my 86 truck. I checked the voltage on my truck with the wire disconnected and it read about 11 VDC. Sounds like the gauge has a problem. Oh yeah, the gauge doesn't hardly move when you disconnect the wire at the sending unit. It stays at 3 O'clock key on or off, engine warm or cold.

10-28-2002, 04:12 PM	#1
Old Dave Is a bullfrog waterproof? Join Date: Nov 2000 Location: OLATHE, KANSAS Posts: 1,130	Question??? www.Fix-a-gauge.com Has anyone heard of these folks? My temp gauge in my wife's 86 Suburban is pointing at 3 O'clock all the time. I've checked the sending unit and it's good and the engine is not hot. I haven't had time to go scrounge one at a salvage yard and it's not available from GM anymore (too old). They say they will fix 99% of the fuel, oil pressure, temp, voltmeters and amp gauges used on GM, IH trucks & buses, John Deere and Case tractors from 1969 to 1992. Prices are reasonable. __________________ "It is better to remain silent and be thought a fool, than to open one's mouth and remove all doubt." Ben Franklin __________________ 1970 Chevy shortbed 2002 Harley Custom Chopper (Long sucker) 1998 K2500 5.7L 5-speed Longbed 1st two are My son's toys...they just live in my garage! 1997 GMC K1500 Suburban 1993 S-10 Blazer 4D (youngest son's daily driver) 2000 Dodge Ram 4WD Ext. Cab (5.9L) Wife is a late year 1951

10-28-2002, 10:23 PM	#2
guitarman Do it well or don't do it Join Date: Apr 2002 Location: Georgia Posts: 457	I've not heard of them before but the site looks good, apparently they are doing well. I just thought I'd answer because no one else was. So you wouldn't feel ignored. __________________ Try to be the person your dog thinks you are. Excellent paint and body site: http://www.autobody101.com/ Visit my Web Site http://home.attbi.com/~agfosteriii

10-28-2002, 11:57 PM	#3
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	I'd start with trying to track down where it got broke in the wiring harness. Disconnect the wire. Measure the resistance between the disconnected wire and ground with the key off. It should be nearly open. If it's shorted, there's your problem. Also, see what the guage does with the sender wire disconnected. I can't tell you what it should do without going out to my newer Chevy and seeing what it does - sorry. Guages usually don't go bad. If it goes back down to somewhere reasonable with the key off, the wire is probably shorted to ground, most likely in the engine compartment, but hey, who knows, maybe some radio tech hooked into that wire for a ground by accident? __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO

10-29-2002, 09:31 AM	#5
Old Dave Is a bullfrog waterproof? Join Date: Nov 2000 Location: OLATHE, KANSAS Posts: 1,130	I'm reasonablly sure it's the gauge because I disconnected the wire at the sending unit and measured the voltage and it was about 1.2 VDC. Checked the resistance of the temp. sender and it measured within 100 ohms of the one on my 86 truck. I checked the voltage on my truck with the wire disconnected and it read about 11 VDC. Sounds like the gauge has a problem. Oh yeah, the gauge doesn't hardly move when you disconnect the wire at the sending unit. It stays at 3 O'clock key on or off, engine warm or cold. __________________ "It is better to remain silent and be thought a fool, than to open one's mouth and remove all doubt." Ben Franklin __________________ 1970 Chevy shortbed 2002 Harley Custom Chopper (Long sucker) 1998 K2500 5.7L 5-speed Longbed 1st two are My son's toys...they just live in my garage! 1997 GMC K1500 Suburban 1993 S-10 Blazer 4D (youngest son's daily driver) 2000 Dodge Ram 4WD Ext. Cab (5.9L) Wife is a late year 1951

10-29-2002, 12:57 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Your temp guage wire is grounded out someplace...check on the exhaust manifold...it is probably a melted mess on there.



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