sputtering and (almost) stalling

[jeepsquire]

I'm having this weird problem that I cant figure out.

First off, it’s a '98 TJ with a 4cyl

Weeks ago I was having a problem where it seemed to be missing and stalling slightly while I was on the highway.

It slowly seemed to get better and go away.

Tuesday I changed out my plugs, wires, cap and rotor.

Wednesday I started feeling it again.

Yesterday and today it’s gotten really bad.

I have no engine lights or anything so I don’t think it’s the O2 sensor.

My current suspects are the fuel filter and/or sending unit, control module, or intake/exhaust manifold (After I bought it the exhaust got slowly louder and I found that I was missing most of the bolts for the exhaust manifold)

Any thoughts?

 

[cjshloman]

Its prob the exhaust man........Mine went on my 98 and sputters and has power loss. Ill be ordering my new banks header next week. Bull.

 

[CrzyFrlssJeep]

Didn't someone here recently have a problem with a bad fuel injector causing the same issue? And he also had no "check engine light" on.

A scanner will be needed for this problem it seems.

 

[jeepsquire]

Didn't someone here recently have a problem with a bad fuel injector causing the same issue? And he also had no "check engine light" on.

A scanner will be needed for this problem it seems.

I was thinking of going over to advance. They have scanners right?

 

[jeepsquire]

So I'm thinking that I have a loose wire somewhere. I fidgeted with all the wires going to everything on the ignition system and the problem went away for several days. I've only gotten a few minor hiccups and they are all about a half second after hitting a bump.

 

[gymrat]

Crank Position Sensor?

 

[jeepsquire]

So when it starts happening If I stop and start it a couple times it goes away for a while.

 

[xjmark]

So when it starts happening If I stop and start it a couple times it goes away for a while.

Did you change the fuel filter? The crapola in there could be aligning it's self enough to plug the passage, and after a few restart cycles it moves around to let the fuel through again. Change it out if you haven't yet.

 

[jeepsquire]

So when it starts happening If I stop and start it a couple times it goes away for a while.

Did you change the fuel filter? The crapola in there could be aligning it's self enough to plug the passage, and after a few restart cycles it moves around to let the fuel through again. Change it out if you haven't yet.

Thats what I was thinking. Hadnt replaced the filter yet because I wasnt convinced that was the problem.

Thanks

 

[beaker]

6 year old truck.

If your filter isn't a problem yet it probably will be soon.

 

[CrzyFrlssJeep]

The fuel filter in a 98 TJ is intregal with the whole fuel pump assembly, you don't need to change it unless the pump itself is bad which is big $$$.

I'd be looking at something else as to what the problem is. Unless the pump itself is really on it's way out.

Fuel psi. spec. is 39-41 psi. running with no leakdown after key off within 30 mins. I believe.

 

[beaker]

There's no filter above the axle like a cherokee? Interesting.

 

[CrzyFrlssJeep]

There's no filter above the axle like a cherokee? Interesting.

It's like that with all 96 or 97 & up Jeeps, sucks but it's the truth.