lee4life

I have an acura tl 2.5 1996 which last year i swaped original motor to a j-spec motor. I have an idle problem which the obd2 scanner detected.
p0130 o2 sensor circuit bank sensor 1
p0505 idle air control system
p0303 cylinder 3 misfire detected
p0441 evaporative emission system incorrect purge flow.

I pulled out the idle system and the purge flow from the junk yard and installed it to my engine, its still doing the same thing which the rpm idles up and down on neutral or park for about a 1 minute then its normal. I sprayed throttle body cleaner all over the intake manifold and air hose plugs i dont see issues of vacuum leaks there.
I have an idea where the problem might be encountering from. When i swapped my motor i installed a new intake manifold gasket where i took off the manifold three times to change my starter and engine wire harness. I was wondering if the manifold gasket might be the problem how my car idles up and down.

brian.c.doherty

I have the same issue on my 96 3.2. I can tell you that it only started after I took it in to have the EGR ports out. THey had to take apart the intake and replaced the manifold gasket. I was sitting in traffic with my wheel cranked to the left today and the idle went up and down. HAd to straighten my wheel so it wouldn't stall.