New jeep owner's jeep troubles

[cdrake261]

Lift?
Tire size?
Gears?
Man or Auto?
How fast on the hwy?


Rev

All stock, auto tranny, 235/75/15 tires, and 60mph on the highway/45mph in town

 

[cdrake261]

yes check the coil...but check the fuse first!

fuses are cheap

I replaced the ignition coil, no dice...so potential problems left are o2 sensor, wiring, fuel system, PCM.

How hard is it to inspect wiring for fault and where on the wiring harness are the most prone areas susceptible to shorting?

 

[IllianaXJ]

Between the sensor body and plug, and as far up the plug wiring you can see. They tend to rub on the exhaust if not properly routed.

 

[altrocker1]

also have you checked to see if your manifold is cracked?