Question about 1999 Chevrolet Monte Carlo

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2000 monte carlo, low collant light comes on when starting car, goes out after a few miles. sensor has been replaced, problem continues. collant level ok

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How are you checking the coolant level? if by opening the cap, that is the wrong way.
with the heater at full and the car well warmed up, check the coolant in the recovery containe, and fill to hot if needed. then carefully openn the bleeder air valve(there may be two on some models), until a whisp of coolant starts to come out then quickly close the valve. it looks like a bolt on top of a bolt. if it has a hex head its 7mm if it has a slot then use a screw drive(the slot head was later used and the hew discontinued).
DO NOT OVER-TIGHTEN THE HEAD, as it easily will break off!!!
when ALL the air is out the coolant is now full and the light should no longer light, if it continues the sensor mounted on the passenger side of the radiator has gone bad or is not plugged in.

Posted on Apr 03, 2009

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2000 monty carlo low colent light comes on but it is full how to get the light to go out


Depending on which engine is in the Monte 3.1 or 3.4 there is a sensor located in the coolant tank reservoir. Most likely this sensor is bad and need replaced but sometimes you can use a screwdriver or something to lightly tap the reservoir by the sensor and sometimes this will allow the light to out. If the light does go out like this you have pretty much verified the sensor is a problem.Often this does work but most likely the sensor will need replaced.

Feb 15, 2011 | 2000 Chevrolet Monte Carlo

3 Answers

My 2000 monte carlo low coolant light stays on and its full how do i get it off


disconnect sensor at source, usually at the radiator. if you see a connection on radiator, that's the one

Jan 02, 2011 | 2000 Chevrolet Monte Carlo

1 Answer

2000 Monte Carlo has a slow oil leak started noticing oil on the garage floor. I also noticed that if I park the car on a small incline such as my drive way the leak goes away at least there's no oil on...


as a mechanic I will say it can be multi things that can cause a leak. but when you say it goes away on slight incline that normaly means it is toward the front of the engine. I must say just because their is low miles does not mean a seal will not go out. I have replaced seals on cars with only 10,000. It is normaly caused from vibration or misplacment of seal. If you look under the car look for a wet spot on the engine or its components then email me back and I may be able to help you narrow it down. I would not freak out to bad though monte carlos are easy to work on and should not cost much to fix it.

Dec 12, 2010 | 2000 Chevrolet Monte Carlo

1 Answer

Low oil light comes on but goes out after restart.. this started happening recently .. the oil lvl is fine ive checked it many times it only comes on after its sat overnight at the first start.. shut it...


In this case it is usually the low oil level sensor that is defective; however it could be an issue in that electrical circuit as well from the scenario you have given.

Jun 14, 2010 | 1996 Chevrolet Monte Carlo

1 Answer

Low coolent light comes on. When fluids are checked everything looks good. yet the light continues to come on any sujestions?


If top off on coolant you have a coolant level sensor that's starting to go bad, the sensor sit on the side of the radiator' plastic tank on the radiator on the passenger side, square looking, napa stock's this, part # FLS614
same part for 3.1L and 3.8L engine, to check to see if it is defective when coolant light on disconnect sensor and if light goes off bad sensor, good luck, hope this was very helpful.

May 14, 2010 | 1999 Chevrolet Monte Carlo

1 Answer

PO171


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1 Answer

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