Question about 1994 Chevrolet Caprice Classic

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Temp.gaugeneedle stays to far left

Changed temp. sender in engine-NO HELP

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BAD FUSES ON THE FUSES BOX CAN CAUSE THIS MALFUNCTION

Posted on Sep 22, 2009

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I have a 2008 Chevy Colorado and today my temp


when a temp gauge drops to cold ,it indicates a problem in the cooling system
temp gauge sender units need water to activate the resistance that makes the gauge read so a falling gauge indicates no water around the sender unit --- air lock in the system--faulty wire connection to the gauge sender unit
the ac unit is not connected to the temp gauge so there may be another separate problem there
the temp sensor is an entirely different unit to the temp gauge sender unit and the short term working would be from an altered coolant level from changing that sensor --air lock in system
the temp sensor connects to the ECM to activate the fans and monitor engine operating temp so as to keep the air/fuel mixture exact for the engine conditions
the temp sender unit just makes the temp gauge read
a faulty thermostat will either be stuck open and the engine temp will take a long time to rise or it will be stuck closed and that will cause an overheat very quickly

Sep 11, 2014 | 2008 Chevrolet Colorado

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How to change temperature sender on AUDI 1.9 TDI


The specific location of the sender is on back of cylinder-head near by vacuum-fuel double pump. There is an assurance clip and a rubber sealing O-ring. Heed of antifreeze solution temperature!!!
Before you try to change the sender you must be sure that the sender is out of order. First you must check the thermostat operating. Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.
5. If the thermostat and the temp sender are OK the last piece out of order will be the instrument cluster.

on Dec 19, 2009 | Audi A4 Cars & Trucks

1 Answer

My 2003 Saturn VUE is saying that I'm over-heating (both the warning light stays on, and the gauge stay pegged hot) even after my car has been sitting in the driveway for 2-3 days (or longer). There is not...


i'd change the engine temperature sender unit , or just disconnect it for a while and see if the gauge symptoms disappear , if they do then change the temp sender unit,if the symptoms remain i'd say get the OBD codes read as may have a faulty dash component

Jul 04, 2014 | 2003 Saturn VUE

2 Answers

Low oil pressure


Are you running oil of proper viscosity for temperatures in your area?

Jan 11, 2014 | Cars & Trucks

2 Answers

My temp gauge stays on hot but not over heating and the heater is blowing cold


you might have a defective sender unit (temperature) or faulty wiring to the same unit.Identify the sender unit and disconnect it whilst your ignition is on. Temp gauge must fall to cold.If it does, sender unit needs replacement and if it stays high your wiring to the sender unit is shorting with ground

Jan 28, 2012 | 1993 Chevrolet Corsica

1 Answer

I have an Audi A4 2.5 V6 TDI. starts lovely when cold but when warm it doesn't start so easy. So far I've changed the cranking sensor, Glow plugs & ECT sensor . . . Any suggestions?


can be injectors leaking when parts is warm and expanded or temp sender not sending correct signals to ecu,so get injectors tested and replace temp sender.hope u succeed.

May 27, 2011 | Audi A4 Cars & Trucks

1 Answer

Temperature gauge does not work. How can I test and repair?


You can test the guage by removing the wire on the engine temp sender and then grounding the wire to a ground. THen turn the ignition to run and the temp guage should go to hot, and when ungrounded the guage will go to cold. The temp sender is a single wire sensor screwed into the intake manifold top left side of engine, with a red/white wire. PLease rate me as this will help me out . Thank you RJ

May 30, 2010 | 1995 Ford Windstar

2 Answers

99'concorde stalls,wont start until cool again..


When cold, your engine runs from a different computer mode than when warmed up...It seems that when you reach temp, the normal "run" program transitions in (undercomplicated version) Usually when the signal from the temp sending unit does not change (bad sender) the engine will remain running but will run rich. Usually if the sending unit wire is disconnected it will also remain in "cold" mode. I'm thinking that possibly the sender is internally shorting out or the computer isn't working correctly. If you have an engine light on, likely you can retrieve a code that may point you to something in that area. Or, since sender isn't very costly, change it and see if the problem clears up. (I'm not a big fan of just putting in parts without testing, but in this case it may pay off)
Good Luck

Jul 27, 2009 | 2000 Chrysler LHS

2 Answers

Temp gauge stay on cold.


Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader.

Jan 15, 2009 | 2001 Chevrolet Impala

1 Answer

Water temparature gauge


The specific location of the sender is on back of cylinder-head near by vacuum-fuel double pump. There is an assurance clip and a rubber sealing O-ring. Heed of antifreeze solution temperature!!!
Before you try to change the sender you must be sure that the sender is out of order. First you must check the thermostat operating. The thermostat location is on back of alternator at the bottom side of the bracket. IMPORTANT: It is NOT necessary to replace the alternator if you want to change the thermostat !!!
Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.
5. If the thermostat and the temp sender are OK the last piece out of order will be the instrument cluster.



Oct 10, 2008 | 2000 Audi A4

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