'91 Explorer XLT Stalling Out

The loose cap you found on the floor probably is from the vacuum tree near
the back of the intake manifold. This cap in infamous for blowing off if
there is any type of small backfire. Look for the tree, you will find an
uncovered vacuum line, and hopefully your hissing noise.

"Dan J" > wrote in message
...
> Charlie Bress wrote:
> > "Dan J" > wrote in message
> > ...
> >
> >>The past 2 years that I have had my Explorer I have noticed that in the
> >>summer it is stalling out. Well yesterday things got really bad with it,
> >>In order to keep it running I have to leave my foot on the gas and place
> >>it in neutral sometimes.
> >>
> >>I checked my vacuum lines and found 1 line that was torn up from wear
and
> >>tear, and was promptly fixed. Unfortunately that did not solve the
problem
> >>as I had hoped.
> >>
> >>I am hearing a loud hissing noise as if there is a vacuum leak but I
> >>cannot find it, as all the lines that are visible are in good condition.
> >>Are there any lines that are hidden that are accessible if you know
where
> >>they are at?
> >>
> >>How hard is it to change out the spark plugs w/o having to tear off half
> >>of the engine?
> >>
> >>Thanks in advance for your help.
> >>
> >>
> >>~Dan
> >
> >
> > Dan, I just had a similar problem on my '92. It didn't stall but idled
> > rough.
> > First make sure that on the little manifold that is at the left rear of
the
> > engine that all the ports have either a vacuum line attached or a cap to
> > seal off a port that is not being used. If all that is OK pull out the
> > thicker vacuum line that goes to the power brake booster. That is the
round
> > can that is mounted on the firewall.. Pull that big hose out of the
booster
> > and close of the end with your hand. See if that makes a difference.
What
> > happened to me was that the grommet on the booster had deteriorated and
> > leaked. Replacement can be got at local parts store.
> >
> > Charlie
> >
> >
> Good suggestion, I will check it out. The other thing that I noticed was
> that there was what looked like a cap to a vacuum line on the ground, I
> put it to the side as I still cannot find where it came from, as it
> probably tumbled off somewhere.

Well I do have all the connections taken care of, unfortunately this cap
belongs somewhere else :|

Phil wrote:
> The loose cap you found on the floor probably is from the vacuum tree near
> the back of the intake manifold. This cap in infamous for blowing off if
> there is any type of small backfire. Look for the tree, you will find an
> uncovered vacuum line, and hopefully your hissing noise.
>
> "Dan J" > wrote in message
> ...
>
>>Charlie Bress wrote:
>>
>>>"Dan J" > wrote in message
...
>>>
>>>
>>>>The past 2 years that I have had my Explorer I have noticed that in the
>>>>summer it is stalling out. Well yesterday things got really bad with it,
>>>>In order to keep it running I have to leave my foot on the gas and place
>>>>it in neutral sometimes.
>>>>
>>>>I checked my vacuum lines and found 1 line that was torn up from wear
>
> and
>
>>>>tear, and was promptly fixed. Unfortunately that did not solve the
>
> problem
>
>>>>as I had hoped.
>>>>
>>>>I am hearing a loud hissing noise as if there is a vacuum leak but I
>>>>cannot find it, as all the lines that are visible are in good condition.
>>>>Are there any lines that are hidden that are accessible if you know
>
> where
>
>>>>they are at?
>>>>
>>>>How hard is it to change out the spark plugs w/o having to tear off half
>>>>of the engine?
>>>>
>>>>Thanks in advance for your help.
>>>>
>>>>
>>>>~Dan
>>>
>>>
>>>Dan, I just had a similar problem on my '92. It didn't stall but idled
>>>rough.
>>>First make sure that on the little manifold that is at the left rear of
>
> the
>
>>>engine that all the ports have either a vacuum line attached or a cap to
>>>seal off a port that is not being used. If all that is OK pull out the
>>>thicker vacuum line that goes to the power brake booster. That is the
>
> round
>
>>>can that is mounted on the firewall.. Pull that big hose out of the
>
> booster
>
>>>and close of the end with your hand. See if that makes a difference.
>
> What
>
>>>happened to me was that the grommet on the booster had deteriorated and
>>>leaked. Replacement can be got at local parts store.
>>>
>>>Charlie
>>>
>>>
>>
>>Good suggestion, I will check it out. The other thing that I noticed was
>>that there was what looked like a cap to a vacuum line on the ground, I
>>put it to the side as I still cannot find where it came from, as it
>>probably tumbled off somewhere.
>
>
>

John Normile wrote:
> I found that the easiest way was to remove the passenger side inner
> fender (plastic) to get to the rear plug. All the rest are
> relatively easy.
>
> John Normile
>
> On Wed, 27 Jul 2005 19:15:11 -0700, Dan J >
> wrote:
> (Snip)
>
>>Thanks in advance for your help.
>>
>>
>>~Dan
>
>
Rear Plug on the Left side? Do you have an approximate location or a par
t that I could reference?

Dan
In your post you asked about possible problems changing spark plugs.
My reply was in refreence to this question.
John

>John Normile wrote:
>> I found that the easiest way was to remove the passenger side inner
>> fender (plastic) to get to the rear plug. All the rest are
>> relatively easy.
>>
>> John Normile
>>
>>
>>
>Rear Plug on the Left side? Do you have an approximate location or a par
>t that I could reference?

John Normile wrote:
> Dan
> In your post you asked about possible problems changing spark plugs.
> My reply was in refreence to this question.
> John
>
>
>>John Normile wrote:
>>
>>>I found that the easiest way was to remove the passenger side inner
>>>fender (plastic) to get to the rear plug. All the rest are
>>>relatively easy.
>>>
>>>John Normile
>>>
>>>
>>>
>>
>>Rear Plug on the Left side? Do you have an approximate location or a par
>>t that I could reference?
>
>
When you did this, did you have A/C?

On Sat, 30 Jul 2005 12:15:44 -0700, Dan J >
wrote:

>John Normile wrote:
>> Dan
>> In your post you asked about possible problems changing spark plugs.
>> My reply was in refreence to this question.
>> John
>>
>>
>>>John Normile wrote:
>>>
>>>>I found that the easiest way was to remove the passenger side inner
>>>>fender (plastic) to get to the rear plug. All the rest are
>>>>relatively easy.
>>>>
>>>>John Normile
>>>>
>>>>
>>>>
>>>
>>>Rear Plug on the Left side? Do you have an approximate location or a par
>>>t that I could reference?
>>
>>
>When you did this, did you have A/C?
YES