- Location
- Virginia City, NV
Had a buddy bring over his 97 Cherokee 4.0 auto 2wd. It's been having a lot of trouble. Put my scan tool on it and I got
P0304
Cyl 4 Mis
P0303
Cyl 3 Mis
P0302
Cyl 2 Mis
P0300
Random Mis
P0135
Ox sensor heater Bank 1 sensor 1
P0204
Inject 4 open
P0201
Inject 1 open
P0203
Inject 3 open
Viewing the live data the down stream o2 is fluctuating above .8 constantly and the cat is glowing orange hot after a few seconds of running the motor. It's backfiring at idle constantly. It's running like its down a few cylinders as well. Really ruff idle. Every cylinder is getting spark. The plugs look really black on the electrode. And the ceramics are all really red. I'm thinking it's timing and injector related. Ill be glow plug checking the injector harness this week and working that way. The map sensor seams to be working properly. Just wondering if anyone had any other ideas to look at. Live data shows the timing at about 15 at cold idle and about 47 at 2500.
P0304
Cyl 4 Mis
P0303
Cyl 3 Mis
P0302
Cyl 2 Mis
P0300
Random Mis
P0135
Ox sensor heater Bank 1 sensor 1
P0204
Inject 4 open
P0201
Inject 1 open
P0203
Inject 3 open
Viewing the live data the down stream o2 is fluctuating above .8 constantly and the cat is glowing orange hot after a few seconds of running the motor. It's backfiring at idle constantly. It's running like its down a few cylinders as well. Really ruff idle. Every cylinder is getting spark. The plugs look really black on the electrode. And the ceramics are all really red. I'm thinking it's timing and injector related. Ill be glow plug checking the injector harness this week and working that way. The map sensor seams to be working properly. Just wondering if anyone had any other ideas to look at. Live data shows the timing at about 15 at cold idle and about 47 at 2500.