2 Questions please
But the old IAC valve starts high and comes down to around 800 - 900 rpms. This one seems fine. -------There doesn't seem to be a vacuum like anywhere.
Should I just leave the old one or have I found more problems with the car?
additional info--Car takes 3 - 4 tries before it starts, which is why I tried putting a new IAC valve. I just installed a new MAF sensor. Still cranks after 4 tries when it's cold.. I think it's the FPR.
Thx a bunch...
My car has an automatic transmission.
Hello - I think you were on the right track with the idle air control valve. It sounds like your engine is getting extra air from an intake leak somewhere. It’s also possible there is a throttle body problem. The "multiple tries to start" problem sound like the fuel pump check valve bleeding down overnight. The fuel pump has to work extra long on first startup each day to compensate for no residual fuel rail pressure. Putting a fuel gauge on the fuel rail will confirm/reject this possibility. For diagnostic assistance, I recommend a high idle inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing