Engine Performance problem
1996 Mitsubishi FTO 6 cyl Front Wheel Drive Manual 136000 miles
my car has an intermittent engine surge or misfire and I can't track down where its from or why it's happening. The symptoms are:
1.) The engine will only surge when the revs are between 0-2200rpm
2.) It will only surge occassionally once the engine has warmed to operating temperature - not when it's cold
3.) It will not surge when the air conditioning is on
4.) It will only surge when driving at a constant speed (0-65kmph), not while accelerating.
5.) It surges throughout all 5 gears, just so long as its within the rev threshold of 0-2200 approx.
6.) It does not surge at idle, only in gear and when driving
at higher speeds the engine is completely normal. The surge itself is just a very quick and very momentary loss of power.
I have changed spark plugs, and air filter, as well as spark plug leads. I will be replacing fuel filter asap.
Please, any help will be very much appretiated!
Thursday, May 13th, 2010 AT 4:13 AM