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My car has been running hot and the check engine light is coming on. What is causing it to happen?

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Slowly failing thermostat or one of the cooling fans has stopped working. If you turn on the A/C, does the other cooling fan turn on?

Posted on Oct 24, 2010

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My 2006 ford explorer 4.6 v8 has a red warning light for high tempature come on and the tempature gauge shows that car is running hot.when this happens the a/c then blows hot air.if I turn off the a/c then...


Check for a broken belt. If your water pump is not turning, it will cause the engine to get hot and the radiator wont steam. If a belt is broken it would also explain the no A/C condition.

Jun 26, 2011 | 2006 Ford Explorer

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I have a 1998 Saturn. The reservoir often leaks water/antifreeze and light comes on to indicate. I have had water pump as well as reservoir replaced. Doesn't leak everday but still leaks. WHat is this?...


you need to find that leak, is the leak visible? if its not from radiator or the reservoir, the only other place I could think you can lose water is the head gasket. It happens to high miles and hard driver. 100k miles would likely be a head gasket. Leaking head gasket will also cause the engine temperature to rise and run super hot. antifreeze will leak through the head gasket down to your oil pan mixing oil and water. Check your oil by pulling the dip stick and see if you have oil mix with water; it will have a slimy looking colors, oil is light color and it should never be black. if it black than change your oil and inspect it afterward when the car has been running for while. when engine really hot cause the heat to effect the starter not to engage or start or engine is too hot to run. repairing head gasket could run anywere from 500-800 bucks.

Nov 24, 2010 | 1998 Saturn SL

1 Answer

Car won't start when turned over unless the pedal is feathered


A sticky fuel pressure regulator could cause line pressure drop on hot start. I'd try a good fuel system cleaner like BG's 44K before replacing any part$ tho.

Mar 23, 2010 | 1999 Chrysler 300M

1 Answer

My chevrolet is running hot and check engin light coming on whats going on?


Many things could be happening. Coolant fan not working, Thermostat stuck, low on coolant. , blown head gasket, many things will cause it to run hot. Need more info,

Mar 14, 2010 | 2002 Chevrolet Cavalier Coupe

1 Answer

1990 acura, when it gets hot outside, the check engine light comes on and wont let me start my car. Happens after about 12 hrs of sitting outside. Starts fine in the morning on my way to work, but then...


unfortunately anything could be causing your check engine light to come one. You'll actually need to have it towed to autozone or someplace like that to have the car scanned to determine what is causing the issue

Sep 09, 2009 | 1990 Acura Integra Hatchback

1 Answer

The coolant smells bad


If your engine is running hot, yes that could cause light to come on, as well as a strange smell. Have it checked a.s.a.p. otherwise it could cost you a lot of money, if it hasn't already. Don't drive it if it's running too hot. Make sure you add coolant as needed before you try anything.

Feb 26, 2009 | 2000 Pontiac Grand Am GT

1 Answer

Check engine light comes on when car is warm.


could be the crank sensor breaking down when hot which will cause you to lose spark,get it hot and see if have a spark from plug lead after it does cut out and this will verify it.

Dec 18, 2008 | 1999 Hyundai Accent

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