watson
NAXJA Forum User
- Location
- Cincy, Ohio
Checking to see if anyone knows what this might be...
I have a 93 XJ with the HO 4.0L, auto trans. It idles fine and I can rev it up in "park" and it revs fine with no hickups but when I drive it, it drives fine up to about 1500rpm and then it spits, sputters, stumbles, and falls on its nose. It did this once before on a trailride and I limped it back to the trailer and I didn't do a thing to it. I didn't have time to mess with it. The next time I tried to drive it and backed it off the trailer about a month later, it ran fine like nothing ever happened. I drove it as a daily driver for about 3 weeks after that with no problems and then all of a sudden, one morning it started doing it again.
I figure it has to be fuel, air, or spark related.
I pulled all the plug-wires off to see if they were corroded but they all looked fine. Could it be something deeper in the distributor? Maybe a bad coil? O2 sensor? Why would it rev fine until a load is put on it?
Any thoughts?
Thanks much.
I have a 93 XJ with the HO 4.0L, auto trans. It idles fine and I can rev it up in "park" and it revs fine with no hickups but when I drive it, it drives fine up to about 1500rpm and then it spits, sputters, stumbles, and falls on its nose. It did this once before on a trailride and I limped it back to the trailer and I didn't do a thing to it. I didn't have time to mess with it. The next time I tried to drive it and backed it off the trailer about a month later, it ran fine like nothing ever happened. I drove it as a daily driver for about 3 weeks after that with no problems and then all of a sudden, one morning it started doing it again.
I figure it has to be fuel, air, or spark related.
I pulled all the plug-wires off to see if they were corroded but they all looked fine. Could it be something deeper in the distributor? Maybe a bad coil? O2 sensor? Why would it rev fine until a load is put on it?
Any thoughts?
Thanks much.