Hot start , only , tip in hesitations, then self cures driven
well ever use a real scan tooL
is ECT reading 180F or more, when it does above?
if not , get a new thermostat we IR gun the STAT houses
if temps ok there, the ECT is bad.
its it flooding on hot starts? even one injector can leak
an cause bad running until it burns off.. (injector leak down tests show this to be true)
"
then it drives fine"
be nice to know how long it took to drive fine, 1min 1hr, ?
1sec/???
its not the TPS, or fails all time, hot.
when started hot
is RPM correct, at PCM spec hot RPM??????
and not felt or heard misfire, at idle?
Could you explain this a little better , hesitates at tip in after you first start it when warm > hesitates at tip in ???? plus after first you first start it when warm . What's warm ? the engine ? The temperature out side ? Or after you had it running an shut it off an restart the vehicle ? The engine temp. is warm , hot etc.... cooling fans working , vapor lock ?
SOURCE: stalls and backfires 1997 jeep
you need to check the fuel pressure,and did you mean you replaced the distributor or just the rotor because inside the distributor is a pickup plate that some times causes this also 02 sensor can cause this.is your check engine light on if so go to chain auto parts store they usually read your codes for free.
SOURCE: 1996 jeep grand cherokee limited. engine is
You should have someone sing a dual trace lab scope, look at the Crank Angle Sensor (CKP) and Cam Angle Sensor (CMP) signals to check quality and sync.
Loose timing chains or broken flex plates can change the sync signal to the Powertrain Control Module (PCM) and cause a stall situation.
Also you should have someone load test the battery and check the cables for corrosion. If the battery drops excessively during startup, the idle motor stepper count can be lost, Powertrain Control Module (PCM) will relearn it while driving.
Clean the throttle blades and adjust minimum idle.
With the air cleaner assembly off, hold the throttle wide open and look down the throttle with a flash light. Look at the lower intake plenum gasket for leaks, oil will build up around the edges and in the corners.
Perform distributor sync adjustment. I hope this helps. tried my best.....
SOURCE: 95 2.5 jeep wrangler stalls consistantly and will
I had the same issue with my 4.0, I went through all the same BS you did and in the end it was a faulty fuel pump. Pricy i know but im sure thats your problem
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