Question about 2000 Renault 181

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Temp gauge keeps flying to top of dial even when car just set of incold then it can go back to normal then flys back to full heat

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Replace the coolant temp sensor. It is a thermo resistor that have failed internally.

Posted on Jan 02, 2011

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1 Answer

My solara 2000 runs beautiful, I just wonder: is it normal that idle, after is warm up at 800-850 rpm? and the temperature gauge drops,incold weather, specially down hills, a around 1/4 of the clock


Idle is too fast. Should be about 500rpm to 550rpm.

Yes, the temperature drops when the thermostat opens, and in cold weather the car struggles to keep the temperature up, so it will be marginally lower. Going down hills should make no difference, so when the vehicle is cold, remove the radiator cap and check the coolant level. Then top up the reservoir. Use antifreeze not water.

A quarter of the clock is fine.

Dec 18, 2016 | Cars & Trucks

1 Answer

I have a 2002 Ford Explorer Sport no heat but the fan works,what could the problem be?


Could be that the thermostat has packed up...

Check all your coolant levels are correct and then take her for a good run out....keep your eyes on the temperature gauge,,if your temp gauge hardly moves then your thermostat is at fault....replace it.

If temp gauge works fine, you may be airlocked in your heater matrix... Try setting heater to full heat with fan on full power,, whilst car is ticking over, remove radiator / expansion bottle cap carefully and start squeezing your coolant pipes. This should force any air out through your rad/bottle top..

Please be aware that as your temperature rises in the engine. Your coolant will expand and start to flow out of the rad/expansion bottle..at this stage quickly replace the cap....check your heater...leave engine to cool....unscrew rad/bottle cap, check coolant levels, top up if necessary and squeeze pipes again..start car with heater/fan on full and repeat above.....

Hope this helps..

Nov 29, 2016 | 2002 Ford Explorer

1 Answer

The temp gauge on my 2008 ram 1500 jumps from normal temp to hot checked engine the temp is fine my heater them puts out cold air and I have no heat if I shut heater off and wait a few minutes temp gauge...


It probably low on coolant. The heater will blow cold when there is not enough water (coolant) to keep the heater core full. Check the radiator (not the overflow reservoir) when it's cool.

Nov 05, 2013 | 1996 Dodge Ram 1500 Club Cab

1 Answer

1995 Chevy Beretta has fluctuating temp gauge


could be the wiring, faulty temp gauge in the dash. or bad temp reader inside the engine. located where the top hose enters the engine.

Jan 31, 2013 | 1995 Chevrolet Beretta

1 Answer

I have a 1997 jeep grand cherokee laredo 6 cyl. i was driving and noticed the battery gauge said the battery was dead and then i noticed the check gauges light went on. i pulled over and saw my temp gauge...


well check the coolant level. it sounds like you had a vapor lock and that would cause steam to escape and cause connections to get wet. this may have cause your battery to read dead. if you aren't low on coolant then i would start with the thermostat. that is easy to change and cheap. if you have low coolant then you may have vapor lock. to fix that you need to let the engine cool down and if you have a radiator cap remove it. look inside you should see coolant. if you don't fill up the radiator with coolant. with the cap off start the jeep and turn the heater on. let the engine warm up. watch the temp gauge and keep looking in the radiator. if you don't see coolant keep add it. at times it will bubble and burp this is normal. keep checking the temp gauge. now see if you feel heat coming out of the heater. if your feeling good heat then the system is circulating. (this mean your not in vapor lock anymore) let it keep running and keep adding coolant till it is full in the radiator. once full put the cap back on and fill the coolant tank to the full point. keep running it but keep checking the temp to be on the safe side. if the temp stay steady you should be good. hope this helps. please rate.

Jan 08, 2011 | Jeep Grand Cherokee Cars & Trucks

3 Answers

My temperature gage is going over in the red and my heat is not


Check the sensor which controls the cooling fans that cools the radiator it prevents the engine from over heating and allows the temp gauge to stay at normal range.recently had problems with my 2003 impala overheating it was the sensor had the thermostat replace as well.

Feb 10, 2010 | 2003 Chevrolet Impala

2 Answers

External radiator resevoir full - radiator not and car is cool


Yes there is supposed to be a suction if the hose is hooked up correctly. When the car cools all the way down it is supposed to pull coolant back in to the radiator from the resevoir. If it is not woring you may not have it sealed right. Make sure the radiator cap is all the way on correctly. You may have to push down and turn it some more. It has to have a seal to create suction.

Aug 05, 2009 | 1998 Subaru Forester

1 Answer

The heater is not heating the car when on hot


1st check the coolant level. Low level will cause a no heat situation as you describe. What does the engine temp. gauge indicate? Is it indicating on the low side of normal, or is it in the normal range? If it indicates a low operating temp. after car warm up, the thermostat may be stuck open, which would not allow the car to fully warm up, and again, result in the no heat condition. Let me know about checking the coolant level, and temp gauge info. Curt

Apr 01, 2009 | 2002 Subaru Forester

1 Answer

Heat fluctuation on temp gauge


change the sending unit to the fan, if that doesnt work check for power too the fan or even a bad fan

Mar 22, 2009 | 1995 Pontiac Grand Prix

1 Answer

Jetta 2003 TDI


My mechanic in our town did a quick computer check. Car computer indicated a low level of antifreeze, he topped it up, cleared all messages off the car computer and said to watch the the heat guage for any further irregularities. I'll keep an eye on it, love the car, great mileage fun to drive.

Nov 05, 2008 | 2002 Volkswagen Jetta TDI

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