Hi all new to the forum but have read lots of helpful posts in the past. Got a megane mk1 confusing misfire issue.
There are 2 misfires. 1 is constant and very faint but noticeable. The other is a decceleration random jolt which sods off if i unplug the map sensor, the constant misfire stays.
So far replaced leads. coils. knock sensor. speedo sensor (as speedo didnt work turned out to be a bad earth). Lambda sensor and spark plugs to 4 post ones.
Car doesnt run hot and seems to run spot on when cold. I get a chunky misfire for the first 2 revs after starting the engine. When accelerating its slow up to 3000-3300rpm then from 3500 to 4200rm its like a turbo then holds back again. Downhill it seems to run alot better through acceleration which makes me think its an under load issue.
Any help would be great. Tia
There are 2 misfires. 1 is constant and very faint but noticeable. The other is a decceleration random jolt which sods off if i unplug the map sensor, the constant misfire stays.
So far replaced leads. coils. knock sensor. speedo sensor (as speedo didnt work turned out to be a bad earth). Lambda sensor and spark plugs to 4 post ones.
Car doesnt run hot and seems to run spot on when cold. I get a chunky misfire for the first 2 revs after starting the engine. When accelerating its slow up to 3000-3300rpm then from 3500 to 4200rm its like a turbo then holds back again. Downhill it seems to run alot better through acceleration which makes me think its an under load issue.
Any help would be great. Tia
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