1993 Exprorer Driveability Problem

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Tom Allemani - 17 Feb 2007 03:21 GMT

The problem with this truck? is that when it first starts it runs fine But
then it starts to bog down like its starving for gas but no backfire, The
farther it goes the worse it gets, pull over, shut it off restart everything
is just ducky for about a mile then the bogging begins again. New fuel pump
and new fuel filter- no change. so far. Any ideas?
It is a 1993 Explorer 4x4 automatic tranny w/ 158,000 mi on it
Has the 4.0 pushrod engine. Any help would be appericated.

Tom

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Whitelightning - 17 Feb 2007 15:16 GMT

> The problem with this truck? is that when it first starts it runs fine But
> then it starts to bog down like its starving for gas but no backfire, The
[quoted text clipped - 5 lines]
>
> Tom

Have a back pressure test done on exhaust, sounds like a plugged catalytic
converter

Whitelightning

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CJB - 17 Feb 2007 22:34 GMT

>> The problem with this truck? is that when it first starts it runs fine
> But
[quoted text clipped - 13 lines]
>
> Whitelightning

Exactly. If you don't wanna pay a shop, you could always disconnect the
exhaust pipe at the manifold and test that way. You may even be able just
to pound your fist on the converter and hear the loose pieces in there.

CJB

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Tom Allemani - 18 Feb 2007 22:53 GMT

>>> The problem with this truck? is that when it first starts it runs fine
>> But
[quoted text clipped - 21 lines]
>
> CJB

Ok thanks guys ill try these ideas and get back a little later
Tom

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