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94 Mitsubishi Eclipse - under low throttle when starting out in first or second gear, car bucks violently until rpm increases past 2,000. Just started to do this but see nothing wrong that would indicate why?
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if it started slipping in 4th then get a new car. The transmission is going out. 4th gear is connected to the clutch and you will need to replace the clutch and the transmission when it gets worse. It costs in upwards of 2,000 dollars to replace and or rebuild. Good Luck
its either the fuel, spark plugs, or not enough air to complete the combustion cycle. Check the air filter to ascertain its not dirty. Check spark plug connections to ascertain there's a current from distributor cap to spark plugs when the starter motor turns. Spray starting fluid for half second before turning engine, and don't give throttle until engine starts, then increase throttle to 2,000 RPM. Once a month, pour a bottle of fuel injector cleaner to keep the injectors clear of debris buildup on the injectors' tips.
First thing i would check is IAC (idle air control) a lot times these can be removed and cleaned with carburetor cleaner then reinstalled if cleaning does not work than replace IAC
Your IACV idle air control valve has gone bad . When you put the car in gear does it take off and accelerate to about 50 MPH without touching the gas pedal ? Had the same problem. Part from Mitsubishi is about $435 PN # MR578268. It is about $30 to $50 dollars on any other car. If this is the problem, the IACV is located on the throttle body and is held on with three screws. I purchased the whole throttle body at a salvage yard for $40, took the IACV off and put it on my throttle body. Car works normal for now, I am looking for another spare. If enough people complain to MItsubishi and www-odi.nhtsa.dot.gov
you should be able to adjust it by the trottle cable check under the hood and see if theres not two nuts holding your trottle cable in place if so ajust if need be. this is a easier way to increase your rpm at idle but you shouldnt be able to decre your rpms at idle this way. for that yu may have to look and see if there is a adjustment screw on your trottlebody that can increase and decrease your rpm at idle. if your have a low idle problem try cleaning the inside of your trottle body really good with a lint free rag and some trottle body cleaner also try cleaning your idle control vavle if cleaning your trottlebody didnt help.
thats one of two things i had the same problem with my 94 honda civic and my 00 mitsubishi eclipse both were not cheep to fix saddly for you man on my civic my tranny was catching and it would stall the motor out idk if that was the complete problem because i sold the car the same day i found out and i do not talk to the guy i sold it too but i seen it running fine a week or so later and on my eclipse it was my ecu for some reason there was a defect or some wires touching or something like that they replaced all my wires and my ecu and it ran fine till i sold it for my 2007 mitsubishi eclipse and gladdly i have not had any problems scince i bought the car
your timeing is off so get your timeing fixed and new spark plug wires and it will run great and if it doesnt get your sensors checked at a local jiffy lube
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