OT But Need Mechanical Help

Uncle · Nov 25, 2010

I have an 01 Ford Explorer my wife uses on a mail route. Starting this summer if it was over 90f she could get about half way through the route and the engine would die. She would have to let it set for awhile and it would run again for a few minutes and die again. It ran all the way through if below 90f.
I replaced the fuel pump and filter with no improvement. I have since replaced the crank sensor, evac sensor, mass air flow, egr valve and egr controller, Idle air sensor, coil pack twice and the computer. All with no improvement and now if it is over 70f it will die. I can pull a trailer 100 miles and never have a problem, it will not do stop and go.
Please, any help would really be appreciated.

Wisconsin Cowman · Nov 25, 2010

I hope before you stuck all that money in it with those parts did you check for any codes with a code reader or scanner. That you be the first thing to do to check if any codes popped up.

Aaron SEIA · Nov 25, 2010

Sounds to me like the computer thinks it's overheating and shuts it down. I'll second getting any codes read. Find someone who can take it for a drive with a portable scanner and see what it's doing at the time it dies.
AaronSEIA

Mike in Mn. · Nov 25, 2010

Maybe have a look at the temp sender, with a scan tool on see what the temp sender is telling the computer. Computer may be shutting the engine down due to an over heat condition when it"s really not happening.

Rusty wheel · Nov 25, 2010

It sounds like it's vapor locking but I haven't heard of a car doing that for years.

paul · Nov 26, 2010

Fan/ fan clutch working? Belt tight?

Seems it works when it gets airflow; doesn't work if it's run slow - no airflow.

You could easily drive it here, was about zero last nite, don't suppose we will see 60 degrees until March or so....

--->Paul

Rick in Michigan · Nov 26, 2010

I had a '99 Lincoln with a 5.0L and a 91 Exploder with the same engine. Both did the same. Found out later Ford had an issue with vapor lock on those engines when they got warm. Remember coming back from Wisconsin across the UP of Michigan one particular hot day in the summer. Lincoln would run about 3 miles each time it started...MANY times I coasted into the next tavern along the way. Took a LONG time to get home!

Allan in NE · Nov 26, 2010

Where did you buy that fuel pump?

Allan

omahagreg · Nov 26, 2010

We have had problems with one brand of fuel here that vapor locks before any other. Switched brands, end of problem. Too much alcohol in the mix is all we could think of.

Paul Janke · Nov 26, 2010

Allan in NE caused me to remember something from quite a while ago that may well be your problem. We had a '93 Topaz that would quit when it was hot. We put on a new fuel pump from a good parts house. Still had a problem. It turned out that the only place to get a fuel pump which would not give problems when hot was from the Ford dealer. No problems after that.

Uncle · Nov 26, 2010

I got the fuel pump from the Ford Dealer. They said that whatever is causing this is not leaving a code so we are shooting in the dark.
There are a few stations around that still sell 100% gasoline. I will give that a try.
Brian

504 · Nov 26, 2010

Does it have an inertia switch? I have seen them reset them selves before.

OT But Need Mechanical Help

Uncle

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Wisconsin Cowman

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Aaron SEIA

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Mike in Mn.

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Rusty wheel

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paul

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Rick in Michigan

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Allan in NE

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omahagreg

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Paul Janke

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Uncle

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504

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