1994 Ford explorer

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JimDavis - 22 Apr 2005 20:35 GMT

After Driving for 4 hours, I got a check engine light... The car drove fine
for a while and then began missing. I continued driving to the next town
but in about 20 minutes everything was fine. The codes said lean fuel
mixture, but the repair shops couldn't find anything wrong. The check
engine light is now back on with lean fuel mixture codes, but the car
drives fine. The repair shops checked fuel flow, but it was fine.

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sleepdog@optonline.net - 22 Apr 2005 21:11 GMT

If you're getting a lean condition you probably have an issue with
unmetered air, or in other words a vacuum leak.

If it's intermittent I would suspect the EGR lines might be the issue.
Check the line from the solenoid to the valve. When the EGR solenoid
opens up to send vacuum signal to the EGR valve unmetered air could be
getting in that way.

Just a theory. If EGR checks out OK take a look at the evap system.

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Tom Adkins - 23 Apr 2005 01:52 GMT

> If you're getting a lean condition you probably have an issue with
> unmetered air, or in other words a vacuum leak.
[quoted text clipped - 5 lines]
>
> Just a theory. If EGR checks out OK take a look at the evap system.

There was also a problem with 4.0 (OHC?) Explorers with the upper intake manifold
seals leaking and allowing unmetered air into the engine causing a CEL. IIRC it was on
4.0L OHC motor. I know this happened on 97- 99 Explorers as I repaired a lot of them,
it may apply to yours, 94 might be a bit early though. I don't remember the coverage
on the TSB.
Have your local dealer run an OASIS report on your vehicle and see if it applies.

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baywatch 904133@yahool.com - 23 Apr 2005 02:40 GMT

>If you're getting a lean condition you probably have an issue with
>unmetered air, or in other words a vacuum leak.
[quoted text clipped - 5 lines]
>
>Just a theory. If EGR checks out OK take a look at the evap system.

hey FOCKTARD

run an oasis on an exploder
lmfao
u are a TARD

hurc ast

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Rob Burtz - 29 Apr 2005 02:22 GMT

I would check the Mass Air Flow Sensor. My '94 did the same thing, I
replaced the MAF and no more light or missing.

> After Driving for 4 hours, I got a check engine light... The car drove
> fine
[quoted text clipped - 3 lines]
> engine light is now back on with lean fuel mixture codes, but the car
> drives fine. The repair shops checked fuel flow, but it was fine.

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