but.. I dunno what...
Last Friday afternoon, for the XJ, I bought a new belt and u-joints for the rear DS... installed the u-joints, no problems, less vibes installed the belt, turned it over to check tension/install, it was fine.
Later that night, we get into the XJ after eatin at a restaruant, turn it on, for first couple seconds it ran fine and then started gettin real rough and jittery. CEL illuminated and started blinking. Ofcourse, cussing at the dash didn't help... So, I drove about 3 miles to get to my house, with it blinking and running rough, and parked it for the night. The next morning, same deal, drove it to work (didn't want to but, it's my only ride) had one of my co-workers whip out the code reader and came up with:
P0304 (M) CYLINDER #4 MISFIRE Misfire detected in cylinder #4.
P1281 Engine is Cold Too Long Engine coolant temperature remains below normal operating temperatures during vehicle travel
Thermostat not doin its job? (P1281)
(P0304) I didn't move the crank at all during the belt install and the u-joints have nothing to do with it. So... I'm very confused as to why this missfire happend?
I checked my spark plugs (10k mi on em tops), they're gapped at .035, and don't look bad at all, no darkness.
I did the battery/computer trick while I had the NEG cable off (for the spark plugs). After reconnecting it, I let the XJ idle for about a minute... still rough with no CEL ...
Checked the sensors on the TB, I pulled 2 of em while the engine was running, excluding the MAP (that leaves, TPS and IAC right?)
(this view is as if you're standing at the Driverside fender looking at TB)
I pulled the one on the right/middle (IAC correct?)
The XJ kinda choked, smoothed out for a lil bit, then choked again so, I plugged it back in cuz I thought it'd die...
Any comments or ideas are much appreciated... I need to revive my DD!
Last Friday afternoon, for the XJ, I bought a new belt and u-joints for the rear DS... installed the u-joints, no problems, less vibes installed the belt, turned it over to check tension/install, it was fine.
Later that night, we get into the XJ after eatin at a restaruant, turn it on, for first couple seconds it ran fine and then started gettin real rough and jittery. CEL illuminated and started blinking. Ofcourse, cussing at the dash didn't help... So, I drove about 3 miles to get to my house, with it blinking and running rough, and parked it for the night. The next morning, same deal, drove it to work (didn't want to but, it's my only ride) had one of my co-workers whip out the code reader and came up with:
P0304 (M) CYLINDER #4 MISFIRE Misfire detected in cylinder #4.
P1281 Engine is Cold Too Long Engine coolant temperature remains below normal operating temperatures during vehicle travel
Thermostat not doin its job? (P1281)
(P0304) I didn't move the crank at all during the belt install and the u-joints have nothing to do with it. So... I'm very confused as to why this missfire happend?
I checked my spark plugs (10k mi on em tops), they're gapped at .035, and don't look bad at all, no darkness.
I did the battery/computer trick while I had the NEG cable off (for the spark plugs). After reconnecting it, I let the XJ idle for about a minute... still rough with no CEL ...
Checked the sensors on the TB, I pulled 2 of em while the engine was running, excluding the MAP (that leaves, TPS and IAC right?)
(this view is as if you're standing at the Driverside fender looking at TB)
I pulled the one on the right/middle (IAC correct?)
The XJ kinda choked, smoothed out for a lil bit, then choked again so, I plugged it back in cuz I thought it'd die...
Any comments or ideas are much appreciated... I need to revive my DD!
