Could it at all be this??????????
fransd
07-04-2009, 02:29 AM
Toyota cavalier 2.4 stalling problem is maybe a design fault.
A small hose, going from the resonator box to the oil separator, maybe a major cause of the cavalier2.4 stalling problems. The resonator box sits above the
air intake
, its part of the black plate above the throttle (nearest the radiator)
The resonator box is attached to the throttle body and also has a little spout with a small hose attached which goes to the oil separator. This hose is suppose to suck the fumes from the crankcase back into the air intake and so back through the combustion cycle. This car requires the crankcase to have a vacuum. Presumable so that hot oil fumes do not affect the cam and crankcase sensors. (these are major sensors and not cheap)
So that hose needs good airflow, but…unbelievingly, this hose has a build in kink or buckle so as to make it easier to fit in place. Close examination show that just above the buckle the hose is softer and easy to further depress so as to close it right off. The air suction might not close it right off but most probably reduces the air flow considerable
I have replaced that hose with a strong reinforced hot water hose and cut exactly the right length so as enable to shape it in a fair curve without buckle or kink and yes for some days now, although I am still a bit nervy driving it, I have put the car through some good testing and not one warning light or stall (so far)
I'll be happy if this would help some of you with a same problem
Don't forget the
spark plug gap, .060'' or 1.5mm or just slightly less