andecase

so yesterday i changed the fuel filter on my jeep did all the good stuff double checked that out went on the out end and now she cuts out really bad all signs point to that she's loading up hard core and i get a back fire not sure whats going on and thoughts?

andecase

sorry 91 4.0 automatic limited

alsxj

Just checkin but you sure you installed the filter the right way.

andecase

first thing i checked haha

waltermitty

Did you try putting your old one back in?

Willys55

sounds like a restriction or bad filter or filter was "stamped" backwards and you put it one wrong because they stamped it wrong......just throwing that out there.

andecase

damn I wish I would thought of putting the old one back in all ready threw it away

someone told me that my fuel trim is prolly off cause it was compensating for the bad filter. to just drive through it.

thoughts?

You may go fast, but I don't get stuck

94JeepCherokeeMan

Take the filter back to the parts counter and say "what the french, toast?"

tjwalker

If the filter arrow is pointing the right direction, it is unlikely the filter causing this.

Check fuel pressure with a gauge. You should have 31 psi at idle. Then disconnect the vacuum line leading to the fuel pressure regulator (be darn sure that vacuum line is pulling good vacuum) and the pressure should jump to approximately 39 psi.

What is the status of tuneup hardware? Fresh champion copper plugs gapped to .035, new plug wires, distributor cap, rotor.

andecase

everything except for the cap and rotor are less than a month old, i didnlt have money at the time for the cap and rotor, and the the fuel filter took precedence, also i realized i didn't say this it runs good at idle it only does it once you press the gas and keeps getting worse till about 2500 till then it acts like it has a rev limiter.

sorry my dumbass fault for not telling ya prolly helps alot

tjwalker

Gotta verify fuel pressure as I outlined in post #9. This is the FIRST thing a technician would do if you brought it to a shop. If you don't have a fuel pressure gauge, they can be rented for a few bucks from many of the big box parts stores; call around.

Spring for the new cap and rotor while you're at the parts store renting that fuel pressure gauge. Start there.

andecase

will do let ya know what i get once i get off work

94JeepCherokeeMan

Good luck man. I just did a napa gold fuel filter last night and no problems yet.

Magiksreal

X 3 to check fuel pressure.

Also, you might wanna do a computer reset.

If you can't be good, be good at it!

andecase

I changed cap and rotor. that helped a little. the fuel pressure was at 35 and 40. tje vaccum line has good suction.

how do I reset the computer?

You may go fast, but I don't get stuck