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Re: When I start my 1996 Previa the engine revs up wide...
Have you removed the intake hose and checked that the buterfly is closed. If so does it open up on its own accord when engine starts. If so check all linkages and return springs. If it has a cable operated throttle and the butterfly is not opening then you have a massive air leak into the manifold via a breather hose or the likes.
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sometimes when an engine gets hot enough it will stop running due to the metal expansion when it is hot.if it cools off it will probably start but don`t run it very long especially without coolant.the thermostat may have seized in the closed position this sometimes happens as when the car is running the temperature flucuates the stat will close and open all the time(won`t close completely).another problem could be a bad head gasket that allowed coolant into the combustion chamber enough that the motor went into what is called hydraulic lock,coolant has filled the combustion chamber enough that the piston won`t move through out its normal travel.i would try changing the thermostat first refill cooling system and let run until the cooling fans have cycled on and off.if it doesn`t overheat and it cranks over when you try to start it then the stat is more than likely the problem.
ok we really need more info. what color smoke is veh overheating. One thing for sure if veh is smoking you are going to have a clogged converter take a front o2 sensor out and see if the engine will rev. if so must fix smoking problem it will be fuel or oil if blueish color or if it is white could be head gasket.let me know a i can help you
not to many local independent repair shop will have the right equipment to test or do correct diagnostic. same way if you have bone problems, you want to go see the bone specialist not an eye doctors, Engine service light could mean one or many things, I would recommend take it to Toyota Dealer and have them do proper diagnostic, Will cost you 70 to 85 bucks, its lot cheaper than guessing and buying parts and hope that will be the right one. Once they do diagnostic they will tell you what it need and you can do the work replacing the part your self. good luck
I have heard this a LOT about the Kia Motors. To my knowledge no Motors have Blown from the Action. I do not think that it is Right eathier But, I got the same Explanation when I called for Reference on the Subject.