Bad miss in the Buffalo

[4x4Dalton]

Bout a couple if weeks ago I started feelin the 91 miss a little at any speed. So I changed plugs,wires,cap,rotor button,fuel filter, oil and filter. That didn't help. I put a can of Seafoam in as well Friday seemed to work fine for 2 days then back to the miss. If I am climbing a hill at speed and give it gas it doesn't do it. But just going down road if I let off gas I can feel it. Tonight drivin at 35mph it missed so bad it would throw you back in the seat. Only thing I haven't changed is TPS. Could that be the gremlin that's causin this? If y'all know of something else please share.

[cantab27]

fuel filter ,,,,injectors ???? 02...

[nickyg]

a TPS is easy to test


http://www.quadratecforum.com/showthread.php?t=72101

[cantab27]

wouldn't trans be playing funny buggers ??

[4.3LXJ]

All the plugs look OK when you pulled them? Check the coolant to see if you are using any?

[4x4Dalton]

All the plugs looked like they had normal wear on them. Now that ya say that it does look like I haven't used much coolant from the drive back up here in July

[4.3LXJ]

I was just wondering if you were having head gasket problems. A persistent miss is one of those signs. Does it miss at idle?

[4x4Dalton]

Nope not until I take off. Sometimes once motors warmed up it doesn't do it for a while.

[4.3LXJ]

I think you might have an injector problem. Try running the tank almost dry and put a half tank of premium in it. We have a TJ doing something almost the same and the good gas straightens it out

[msmoorenburg]

did you ever fix the kickdown cable? Also keep in mind if you run it low on gas you could have the beginning stages of a failing fuel pump.

[prcjeep]

i would put a tps in for good measure, there is a reason i always have a spare in the glove box, when used i just warantee the old one and put the new spare back in the glove box

[4x4Dalton]

did you ever fix the kickdown cable? Also keep in mind if you run it low on gas you could have the beginning stages of a failing fuel pump.

Never got the cable fixed permantly. I've ran it low a couple times. Il check the pump.

[xj4life2]

Hey Bear , you might wanna try a 1/2 pint of Auto Trans fluid in the gas tank and run that through. Best Fuel Injector cleaner there is and its cheap too!! I do it about every three months just to keep the injectors clean and shiny.

[cpttuna]

Is it possible you had a tank of bad gas???