 Won't restart when hot. 2002 V6 175K miles.
2002 V6 175k miles. Bought new. Well maintained. Transmission recently replaced by Ford. Runs well when running. No engine check messages.
There is no cranking issue ... plenty of battery/starter oomph at all times! Starts and runs right away early in mornings when everything is cool. Cranks but does not run/restart after engine is hot ... several minutes must pass before successfully restarting.
This has been going on for some months now, but has worsened in hot weather. At first, beating on the IAC valve seemed to help ... but after replacing the IAC, we know we have greater issues. To date, we have done the following:
1. Replaced IAC control valve.
2. Replaced in-line Motorcraft fuel filter. We thought this was a winner because of the black gunk that spilled out of inlet end of filter ... no change!
3. Replaced fuel pump/sender. Used Ford PFS-399/YL8Z-9H307-AG. Heads up! Round tank seal and fuel line clips must be salvaged from old assembly .. are not included in new package! (Fuel in tank was surprisingly clean by the way.) ... no change.
4. Replaced ECT (Engine Coolant Temperature sensor). No change.
5. Replaced spark plugs. Cleaned/inspected coils. Original plugs were a bit worn ... but clean, looked pretty good. Coils were dirty ... so this was good, needed maint action.
So this is where we are ... all the above has made the vehicle run a bit better (perhaps) ... but the hot non-restart is still with us. And never a single code! Any ideas??
Last edited by 12Ounce; 06-27-2009 at 07:03 AM..
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