My car is a 2004 mistabishi lancer and it revs up to 3000-4000 rvs on start and I'm really concerned. It is also using alot of coolant.

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I had the same problem about a year ago. This turned into a problem of the fan NEVER turning on. My car overheated and my radiator burst on the freeway. Turns out that there is a fan controller mounted behind the radiator that had gone bad. This same part was RECALLED on the 2003 Lancers... seems they still didn't get it right in 2004.

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The first place to start is at the power source. Is the battery good? Does it make any noise when turning the key? It may be something as simple as a dead battery.Check your battery for a full charge before you go any further.

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Hi Kara,

Get the oil changed. You don't want water or coolant mixed with the oil as it will turn the oil milky and is not supposed to be mixed with oil.

Since you're always adding coolant - it must be leaking somewhere. This is not good. Hopefully, it is just a leak from a hose or similar ($). Look at the ground where you park. If it is spotty with marks - it may be dripping over night. Park in an area that is clear of these marks - or slide a large piece of cardboard under the engine over night. That way you can see if you have a leak dripping on the ground or cardboard. If it is not showing up over night - it could be a bigger deal.

It could either be a leak thru a cracked engine block ($$$ - $$$$) or gasket ($$) into the engine oil (changing it out with fresh oil will tell you if it is leaking into the oil if it turns milky in color) or into one of the cylinders and is mixing with gas while the engine is running. When this happens, the water is super heated and appears as white smoke - but is really just steam - at the exhaust pipe.

This is going to cost a few bucks to fix - but it could also be a game changer as far as whether you fix the car and fix it or sell / trade for another depending on whats wrong and how much the car is worth.

Good luck!

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find out where the coolant is leaking from, a minor leak could become a major leak at the wrong time. check your hoses. how much coolant are you having to replace. If you don't see where the water is leaking from try warming the care up or looking for the leak after you car has been driven. Be very careful hot water can cause serious burns.

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I have the same problem and have racked my brain over this it turned out to be the throttle cable sticking.  My guess is that the rubber sleeve is heating up and causing the cable to bind.