Hello Friends, I just bought this car and was told it had stalling issues. She has 235k on her and passed Ct emissions test yesterday. Many new parts were recently installed, fuel pump relay, o2 sensors,coil and power pack, recent tune up.
She starts fine when cold, takes off and runs great. The problem occurs if you try to re start when warm or if she stalls during warm up.
She will not re start and if she does she idles low and rough and will not rev up.
I did reset a code p0455-large emission control leak before going through emissions and it has not come back on in 150 miles.
Any thoughts, maybe the engine coolant sensor ?

Hi Klaus, Your response came to my e mail and not on this thread.My temp gage reads normal, thermostat was recently replaced also. Engine does warm up in a mile or so. It does not puff black smoke after I get it running or when it is idling rough and slow on the re start where it runs rough and at a too low idle.
Fuel pump appears to be original and I do not have a receipt for a new fuel filter which I therefore plan to change.
Thanks

While the ECT sensor could be failing, that would also reflect in the instrument cluster temp gauge. Does the engine warm up completely in the first mile or so, if not then the thermostat might be at fault - especially if the temp gauge goes down when on the highway.

You will also need to inspect all of the vacuum lines you can find and look for cracks. Any unmetered air entering the manifold will cause the engine to run rich and eventually stall, along with coating the O2 sensors with soot.

Your P0455 could have been caused by improper tightening of the gas cap, or it will come back if an EVAP hose is loose.