98JeepXJ
NAXJA Forum User
- Location
- Johnstown PA
98 XJ 4.0 103k.
Here's what it does: After it is shut down from being fully hot and restarted with in 15 to 30 minutes, I'm experiencing a pretty bad stumble the first time I try to accelarate. If I'm leaving a store or something and idling through the parking lot, it's smooth as can be as long as I give it little or no gas. As soon as I start pulling out on the main road, it will stumble, fall on it's face, almost die, backfire for a second or two, and then it take off normally. It will then be fine and run normally for the rest of the time until the next time I shut it down, and restart it within about 15 to 30 minutes.
It's been doing it pretty consistently for about 2 months now. I didn't change anything around the time it started happening. It doesn't do it when started up cold or when started within 5 minutes or so of shut down.
It got a new upstream O2 sensor in November, new plugs,wires, cap, and rotor last June/July. I've run a couple double doses of fuel system cleaner through it lately with no change.(B-12 Chemtool, 2 cans per fill-up)
I'm starting to lean towards it being something ignition related...
Anything I might be overlooking here?? I'm kind of stumped...
TIA
Chad
Here's what it does: After it is shut down from being fully hot and restarted with in 15 to 30 minutes, I'm experiencing a pretty bad stumble the first time I try to accelarate. If I'm leaving a store or something and idling through the parking lot, it's smooth as can be as long as I give it little or no gas. As soon as I start pulling out on the main road, it will stumble, fall on it's face, almost die, backfire for a second or two, and then it take off normally. It will then be fine and run normally for the rest of the time until the next time I shut it down, and restart it within about 15 to 30 minutes.
It's been doing it pretty consistently for about 2 months now. I didn't change anything around the time it started happening. It doesn't do it when started up cold or when started within 5 minutes or so of shut down.
It got a new upstream O2 sensor in November, new plugs,wires, cap, and rotor last June/July. I've run a couple double doses of fuel system cleaner through it lately with no change.(B-12 Chemtool, 2 cans per fill-up)
I'm starting to lean towards it being something ignition related...
Anything I might be overlooking here?? I'm kind of stumped...
TIA
Chad