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Temp gauge wanders upto 110 degrees vey quickly after 10 mins back to 90 degrees water coolant level is ok electric fan is spining slowly in this condition. problem goes away for few days radiator is cold could this be the thermostat or more serious?

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Thermostat or water pump???? do both while your at it...

Posted on Sep 04, 2010

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2 Answers

Temp gauge creeps up


The computer is supposed to ground the fan relay when the engine temp reaches 220 degrees. If the coolant level is low, or the sensor is faulty, the computer will not know the engine needs the fan.
A mechanic would check the sensor with a scanner or meter.
Its also possible the gauge on the dash is not accurate.

Dec 20, 2012 | 2002 Mitsubishi Montero Sport

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I ve recently bought an Audi A6,2.7 litre with twin turbo from japan.The problem i ve is, when this car is idling the coolant temp rises to 110 degrees celcius and drops to 90 when its moving.The other...


when stationary their is no air flow through the radiator so temperature will rise and the cooling fan comes on ,now as for it not going off then this could be a sensor ,relay or the computer as the sensor tells the temperature to the computer which turns the fan on and off ,now on these cars the fan will stay on for up to 5 mins after turning the engine off so if after this time it hasnt gone off then consult the dealer as you have bought a asian market software vehicle so it will not respond to a code reader to locate any faults just like the europeon version but the american version can be read with a code reader .

Apr 12, 2012 | 2002 Audi A6

1 Answer

Audi a4 1997 keeps overheating after bout 10miles (raises upto 100-110 degrees) Checked fan and still working and water circulating fine so could u provide any support in whats causing the problem?


can be loosing water or not holding pressure[coolant bottle or cap],top gasket,crack in block,oil cooler leaking into coolant,faulty heat gauge or sensor.hope this helps

Jul 06, 2011 | 1997 Audi A4

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Having issues with a 2000 chevy impala overheating have changed the radiator and the thermostat fans seem to be working ok but overheats at idle in stop and go traffic, after a certain amount of time it...


YOU NEED BLEED COOLANT SYSTEM.CHECK COOLANT LEVEL IN RADIATOR.ADD MORE DEXCOOL UNTIL COOLANT LEVEL IS CLOSE TO RADIATOR SPOUT.CRANK ENGINE LET IDLE UNTIL TOP RADIATOR HOSE GET HOT.WATCH TEMPERATURE GAUGE.IF TEMPERATURE GAUGE START RISING TO HOT ZONE.TURN OFF ENGINE.LET COOL DOWN.USE LARGE RAG SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME UNTIL ALL PRESSURE RELIEVED.REMOVE RADIATOR CAP.ADD MORE COOLANT.CRANK CAR AGAIN LET IDLE UNTIL TOP RADIATOR GET HOT.KEEP EYE ON TEMP.GAUGE ALSO.WHEN TEMP.GAUGE STOP CLIMBING.YOUR COOLANT SYSTEM BLED.WHEN DONE LET CAR SET A WHILE CHECK COOLANT LEVEL.ALSO FIRST THING IN THE MORNING CHECK COOLANT LEVEL AGAIN.AND BESURE ADD COOLANT IN THE OVERFLOW JUG TO THE COLD MARK.DONT OVER FILL THE COOLANT RESERVOIR JUG.WORK SAFELY DONT GET SCALDED.

Feb 15, 2011 | 2000 Chevrolet Impala

1 Answer

2002 ford e250 5.4. engine temp gauge giving false reading. drove 10 min. went to store came back 5 min. started van and temp. gauge pegged at highest level. realized engine was fine drove home, 2 blocks...


Well, it can be a sending unit issue, they are pretty inexpensive, so worth while to just replace it. Do be aware that the temprature DOES normally do what you describe. The condition is called heat soak, where the temp goes pretty high, due to no water circulation, after shutdown. This is normal and some vehicles run fans after shutdown to help. Usually not an issue with properly functioning cooling system that can hold pressure.

Remember the coolant recovery tanks? Their purpose was to recover teh small amount of coolant pushed out during heat soak.

Sep 28, 2010 | 2002 Ford E250

2 Answers

Temp gauge up and down, why? 1/4 on a run and upto 1/2 in traffic??? mondeo 2002 tdci


There could be many causes for this to happen. The thermostat could be sticking and only opening enough during higher engine rpm. The fan may not be coming on. The system could be clogged and not allowing much coolant to circulate until higher rpm. If this is something you want to tackle on your own I would suggest changing the Thermostat and thoroughly flushing the cooling system, then see how it acts and go from there.

Jul 31, 2010 | 2002 Ford SVT Focus

1 Answer

I have an Audi A4 1.9TDi 2004. I was driving a distance of 25km and the car temp gauge went up twice on the journey and I got message on the dash COOLANT with a pic of a thermometer. I then drove 80km...


Make sure you uhave a good mixture of antifreeze it make the boiling point higher as well as the freeze point lower. Check the fans let it idle turn on the ac and wait and watch.If it gets hot and No fan comes on start there / thermastat The t-start should be open around 160-180 degrees you should notice it get to the threshhold then drop 10 degrees / heads check for water in the oil oil in the water .See if you can get a temp gun if every thing else checks good before you get into the wiring.

Apr 06, 2010 | 2004 Audi A4

1 Answer

What is the check gauges light


CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred.
· Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.

If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance


Oct 16, 2009 | 1999 GMC Jimmy

1 Answer

Overheating when outside temp goes above 90 degrees F


on GM vehicles they still use clutch fans and when sitting at an idle for a while the fan is not pulling enough air through the radiator and condensor so therefor the a/c starts to put out warmer air and the coolant temp. will rise a little bit. You could try replaceing the fan clucth and see if that helps any.

Jun 09, 2008 | 2002 GMC Yukon XL

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