Lancer 2010 intermitten stalling and rev drop
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Lancer 2010 intermittent stalling and rev drop
Hello everyone, I have a 2010 1.5 petrol 4A91 Mitsubishi Lancer. When I press the clutch the engine rpm drops below 500 and in cold weather the engine dies. Sometimes everything is allright. Please see the attached video.
We have changed all sensors, the throttle body and injector rail from a same type of Lancer without any luck. The other car works perfectly. The car got new spark plugs and engine flush and fuel system cleaner. 4 garages were checking the car without fixing it.
The compression is 155psi in cylinder 1,2 and 4, but 115 in cylinder 3. I think if the compression would be the problem then the fault should happen all the time but it is an intermittent thing.
Any idea would be greatly appreciated.
Update: the intake manifold pressure is 44 kpa at idle, the other Lancer has 30 kpa.
We have changed all sensors, the throttle body and injector rail from a same type of Lancer without any luck. The other car works perfectly. The car got new spark plugs and engine flush and fuel system cleaner. 4 garages were checking the car without fixing it.
The compression is 155psi in cylinder 1,2 and 4, but 115 in cylinder 3. I think if the compression would be the problem then the fault should happen all the time but it is an intermittent thing.
Any idea would be greatly appreciated.
Update: the intake manifold pressure is 44 kpa at idle, the other Lancer has 30 kpa.
Last edited by krisz; Jul 16, 2021 at 06:16 AM. Reason: Update
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