Question about 1987 Mitsubishi Passenger

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1994 Mistsubishi RVR Problem with engine performance....

We have a Mitsubishi RVR sports gear: Automatic Transmission, gasoline, Two Tone, Converted, JDM, Left hand steering wheel I am based here in the Philippines.... Why is it that when I start the engine the car always rattles and sometimes the engine would suddenly stop. So I have to start it again.... And whenever I have to take the car for a cruise... the engine stalls at about 2000r.p.m. and it still shakes so i had to step on the gas even ..i find this very dangerous because it suddenly accelerates and we are somehow ''thrown out of our sits''sometimes i had to turn off the air conditioning systems and put the transmission to L and second gear to solve the problem but when i turn it on again it goes back again.... but the problem just suddenly disappears.....i find this very disappointing and stupid because i even have to burn off large amounts of gasoline just to solve this problem that occurs everyday.. i just want to know..... Whats interfering with the engines performance?? Pls help us because this will be very disappointing for us in terms of engine performance and even massive drops in fuel economy... I did some research and some had mentioned to me the ''mass airflow sensor'' Do you think that this has something to do with the cars problem.... Does a Mitsubishi RVR sportsgear have a mass airflow sensor???? Pls....I Need your expert advice... Thank you very much....

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Mine is also a 4D56, struggles to go above 200rpm, partly due to engine fatigue (at more than 140,000 miles), but the main problem could be the fuel pump, not properly calibrated with the engine fuel intake system. Take the car to a garage and ask them to check the pump. also explains he rattling when idle.

Posted on Jan 13, 2011

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