little help

[Jimmyrig]

The girlie’s got a 98 Explorer and when you start it, it runs pretty rough until warmed up. When idling, it’ll rev way up like the choke is on, then kick back down and sputter and run at very low rpms. Then back up and down again until you take off.
Any ideas as to what this is?

Let's GET EM!

[email protected]

[Trick]

Rig..

Just a guess on my part ..Oxegyn Sensor ??

iF SO… THIS IS A CHEAP FIX !

[airjer]

Yep! I know exactly what that is. I’m guessing you have the 4.0 SOHC (SUCK) engine?

You need a set of intake o-ring type gaskets.

This is the time off year we start to see them. To confirm wait untill morning so its nice and cold, start it up then take a can of carb spray and spray around the intake. Please be very carefull doing this, as I have personally started 2 cars on fire doing this. its rare but it does happen. As soon as the engine smooths out you found the leak. (please note I know use a smoker to check for vacumm leaks after I was trapped in the dodge van that caught on fire and lost some hair and had some blisters ” title=”” class=”bbcode_smiley” /> )

Eventually the check engine light will also come on with codes for O2 lean bank 1 and O2 lean bank 2. These two codes and the way its running are the dead giveaway for this problem.

Super easy to do and easy on the checkbook as well!!

Have fun!

"Did we give up when the Germans bombed Pearl Harbor, NO!!!!!" John Belushi as John "Bluto" Blutarsky - Animal House, 1978

[Jimmyrig]

Yep. 4.0.
So how do I go about changing those gaskets?
You said it’s simple, I’m not totally clueless, but there are better guys to work on a car than me.

Once again tirekicker, thanks.

Let's GET EM!

[email protected]

[airjer]

Basically wat you have to do is remove everything between the to valve covers. It sounds like a big job but with a little time and patients theres no reason an average do it yourselfer couldn’t do it. You will need a torque wrench. I believe the specs are in inch pounds. If you don’t have one it would be cheaper to have it replaced at a shop than it would be to buy the wrench. Otherwise a basic set of tools and If I remeber right a 1 1/16 wrench to remove the EGR tube at the manifold. Its basically a bunch of nuts and bolts and a few tricky quick connectors. Oh yeah, youll need a couple of special quick connect tools for the fuel lines also. If you have the tools I say go for it!! as far as the parts just call the dealer and tell them you need the intake/plentum gaskets. they will know exactly what you need!!

"Did we give up when the Germans bombed Pearl Harbor, NO!!!!!" John Belushi as John "Bluto" Blutarsky - Animal House, 1978

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