98 explorer

My 98 explorer sport is having cold weather start problem, no check engine
light. It starts but idles almost to a stall. Once engine warms up it
drives fine.I changed plugs and wires,no help. 4.0 sohc,42,000miles.I
tried changing the fuel filter but can't get the connector to release. I
have used the release tool before on a t-bird but I can't get this filter
out. Also, where is the pcv vavle on this explorer, thank-you for any
help.

Sounds like either a sticking IAC valve or the infamous intake gasket leak.
When checking for an intake leak, the testing must be performed when the
problem is occurring. We see techs (that should know better) trying to find
such a vacuum leak on warmed up engines... since thermal expansion has
helped seal the leak, you can imagine the outcome...).

For your fuel filter... dirt and small pebbles can find their way into the
fuel line connection. This stuff will keep the tool from expanding the
retainer spring far enough to release it. Tapping lightly with a screwdriver
handle os such can help dislodge most of it. Also, rotate the line on the
filter to help break the O-rings loose and, if necessary, a wee snort of
penetrant (on the joint...) can help.

I spend 90% of my time working on diesels so I can't help with PCV
location... at least not by "foggy, old man memory".


"DDISH" > wrote in message
lkaboutautos.com...
> My 98 explorer sport is having cold weather start problem, no check engine
> light. It starts but idles almost to a stall. Once engine warms up it
> drives fine.I changed plugs and wires,no help. 4.0 sohc,42,000miles.I
> tried changing the fuel filter but can't get the connector to release. I
> have used the release tool before on a t-bird but I can't get this filter
> out. Also, where is the pcv vavle on this explorer, thank-you for any
> help.
>

The PVC is on the back on the engine (firewall side). Almost impossible to
get at...

--
Allan Williams



"DDISH" > wrote in message
lkaboutautos.com...
> My 98 explorer sport is having cold weather start problem, no check engine
> light. It starts but idles almost to a stall. Once engine warms up it
> drives fine.I changed plugs and wires,no help. 4.0 sohc,42,000miles.I
> tried changing the fuel filter but can't get the connector to release. I
> have used the release tool before on a t-bird but I can't get this filter
> out. Also, where is the pcv vavle on this explorer, thank-you for any
> help.
>

Why couldn't Ford put the PVC valves on the valve covers where they
normaly are (were) found? I've got a 5L V8 and I ended up putting a
nylon tie wrap around the PVC hose letting the loose end stick up
where I can see it. I follow the tie wrap to the PVC hose, find the
PVC valve and pull the PVC valve from the grommet and remove the PVC
valve from the hose. I've found that this is much easier than fishing
around hoping to pull on the correct hose.

"Al Williams" > wrote in message
news:VR2jf.225733$ir4.38212@edtnps90...
> The PVC is on the back on the engine (firewall side). Almost
> impossible to get at...
>
> --
> Allan Williams
>
>
>
> "DDISH" > wrote in message
> lkaboutautos.com...
>> My 98 explorer sport is having cold weather start problem, no check
>> engine
>> light. It starts but idles almost to a stall. Once engine warms up
>> it
>> drives fine.I changed plugs and wires,no help. 4.0
>> sohc,42,000miles.I
>> tried changing the fuel filter but can't get the connector to
>> release. I
>> have used the release tool before on a t-bird but I can't get this
>> filter
>> out. Also, where is the pcv vavle on this explorer, thank-you for
>> any
>> help.
>>
>
>



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