Ignition problems

Neil

NAXJA Forum User

Location

Oakhurst, CA

• Apr 22, 2003

• #1

Ok, this is what's been replaced: TPS, CPS, O2S, coil, dist. cap, rotor and wires.
Here is the problem: at idle it dies, it may run 3 seconds or 30 minutes, and it starts right back up. At speed (usually 2-3000 rpm) it stumbles. I don't want to have to replace anything that I don't have to right now, but this is driving me crazy. Thanks

 

ChuckD

NAXJA Forum User

Location

Kerman, CA

• Apr 22, 2003

• #2

Tried the MAP? Do you have a MAP sensor?

 

Neil

NAXJA Forum User

Location

Oakhurst, CA

• Apr 22, 2003

• #3

I was looking for "check this loose wire or vaccume line" not go spend more money! I think that it is the map but I was just looking for verification.

 

Matthew Currie

NAXJA Member #760

Location

Vermont, land of big clay

• Apr 22, 2003

• #4

Well, while you're at it, have you unplugged and cleaned and replugged every single electrical connection you can find? My daughter's 87 was doing more or less what yours does, and that cleared it up. The big ugly "C-101" connector on the firewall is one prime suspect, but don't forget the ones down by the ignition and coil.

 

Neil

NAXJA Forum User

Location

Oakhurst, CA

• Apr 22, 2003

• #5

Thanks, I have cleaned all I could find...Untill I find more By the way, Wasn't that "evil connector" fun?!?

 

Georgia Mike

NAXJA Forum User

Location

Flowery Branch,GA

• Apr 22, 2003

• #6

Checked the fuel filter and/or fuel pump? I had a problem sort of similar to yours with the 2-3,000 rpm stumble. Mine would run fine until I hammered the throttle,then it would accellerate,then imediately begin to stumble until I let off the gas. Turned out to be a weak electric fuel pump. :dunno:

 

8

88justin

NAXJA Forum User

Location

Tucson, Albuquerque(summer)

• Apr 22, 2003

• #7

i had a similar stumbling in my 88'. Turned out to be a faulty/intermittant fuel injector.

 

Neil

NAXJA Forum User

Location

Oakhurst, CA

• Apr 22, 2003

• #8

Oh yea, I forgot I have all new injectors and wiring to them. Also checked the pressure at the fuel rail, seems ok.

 

ChuckD

NAXJA Forum User

Location

Kerman, CA

• Apr 22, 2003

• #9

Maybe you have a gearing problem, and your jeep is trying to tell you something. The 35's are too BIG for stock gears.

 

Neil

NAXJA Forum User

Location

Oakhurst, CA

• Apr 22, 2003

• #10

There is no such thing as tires that are too big I'm working on those gears. Trust me, I'll let you know when I get them