Question about 1995 GMC Sonoma

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TEMP GAUGE NOT WORKING ON 95 SONOMA 2.2

TEMP GAUGE NOT WORKING ON 1995 SONOMA WITH THE 2.2 4 CYLINDER ENGINE. REPLACED THE TEMP SENDING UNIT. STILL DOESN'T WORK. WHAT NEXT?

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Check the wiring insrument cluster to the temp sensor. check the ground wire.

Posted on Apr 07, 2009

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Posted on Jan 02, 2017

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2 Answers

I have an N13 1.6 litre Nissan Pulsar Hatch. I've just had the battery replaced and now the temperature gauge isn't working. Was working before. Nothing else was done. Any help would be appreciated.


Your temp sending unit off of your engine is either disconnected or faulty look into we're the wire leads into the sending unit it's usually were your upper radiator hose meets up with the block or were your thermostat housing is thanx Chris

Mar 04, 2014 | Cars & Trucks

1 Answer

Mazda temperature gauge


When the gauge doesn't work, you have to determine, is it the gauge on the dash or the temperature sending unit on the engine or a wiring problem. Try this: find the sending unit on the engine and pull the wire off it. With the ignition key on, touch the wire to a metal ground on the engine. Does the temp. gauge move? If it does, replace the sending unit. If it doesn't move, replace the temperature gauge on the instrument panel.

Dec 23, 2013 | Mazda B-Series Truck Cars & Trucks

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1997 escort temp gauge pulled wire off sending unit temp gauge went to coldso


please state what engine ,diesel endura /petrol or a american big engine as in the europeon scorpio

Nov 16, 2013 | 1999 Ford Taurus

1 Answer

Temp gauge goes all the way to hot replaced the sending unit worked for a little while. still goes all the way to hot


Was this the original problem with the gauge? If so you have problem with a wire shorting to ground from your sending unit to the gauge. If the problem arose as a result of the sending unit replacement, the new sending unit is defective.

Nov 16, 2013 | 1997 Ford Escort

1 Answer

1994 Mercury Grand Marquis temp gauge reads hot


Check sending unit, Ford/Mercury put out a TSB, technical service bulletin : Article No. 95-13-2 07/03/95, on erratic temp sender units.
You troubleshoot as follows :
  1. Turn ignition switch to On or ACC position.
  2. Connect a 10 ohm resistor between gauge lead and ground. The centerline of pointer should fall within the band around the H mark.
  3. Connect a 73 ohm resistor between gauge lead and ground. The centerline of pointer should fall within the band around the C mark.
  4. If gauge tests within calibration, replace sender.
  5. If gauge is out of calibration, replace gauge.

Mar 16, 2013 | 2000 Mercury Grand Marquis

1 Answer

1990 gmc K1500 5.7L, temp. gauge not working:


To review, you have two temp sensors, one for the gauge on the dash and one for the computer. If you unplug the sensor for the computer the reading will be minus 30 degrees or over 300 which will make it very hard to start. Unplugging the sensor for the gauge would have no effect on the computer.
According to the wiring diagram, the wire for the temp gauge is green, and the wires for the temp sensor for the computer are yellow and black.

Aug 24, 2012 | 1990 GMC Sierra

1 Answer

Temp gauge is not working, so Auto transmission won't shift to Overdrive (4th). Replaced a temp sending unit, but didn't fix it. There are other sending units next to the one I replaced, does one of those...


You would need to study the wiring diagram to answer your final question.

The temp sensor of a basic pre-computerised temp gauge mostly just has a single wire and when a gauge doesn't work it can be tested by grounding that wire which then should result in a full scale reading from the gauge. If it doesn't the supply, gauge or wiring is at fault.
If there is a full scale indication the sensor could be faulty or perhaps the engine is too cool.

When electronic engine management came along the temp gauge was increasingly driven by the computer from the main sensor and the single wire type was deleted.

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2 Answers

Temperature gauge


For electrically operated temp gauge, check the power supplying it. Most often, this is connected
to either the accessory fuse or front dashboard
instrument panel, check for busted fuse at the
fusebox. If every fuse is okey, then your temp
gauge needs replacement.

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GMC Sonoma SLE 4.3L 1991- Coolant Temp Gauge Not reading


there are 2 coolant sensors one for gauge and one for ecm

Jul 23, 2009 | 1991 GMC Sonoma

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