Hi everyone,. I have an stock 05 Unlimited with a 4.0. Over the weekend, the Jeep turned over and started just fine and then stalled. It did this several times and after 4-5s it would turn over but not start. Instruments were sporadic and the Key light stayed on (not flashing). I tried both keys and the same result.
5 months ago I replaced the PCM, TPS, Plugs and coil pack. It has been running well since then. I get an occasional rough idle when it is real hot and a P0303 code for fuel injector #3 but otherwise it has been running good until this.
Now I am getting these codes; the p0303 and P0431 and two new ones, U0155 and U0168. I suspect the P0431 may be getting tripped by the P0303. But am not sure what is kicking the two new U codes.
I plan disconnecting the battery, cleaning all grounds, and checking the ASD relay.
Os of now it wont start, so that is my priority. Any other suggestions before I start replacing parts?
Thanks
Chris
5 months ago I replaced the PCM, TPS, Plugs and coil pack. It has been running well since then. I get an occasional rough idle when it is real hot and a P0303 code for fuel injector #3 but otherwise it has been running good until this.
Now I am getting these codes; the p0303 and P0431 and two new ones, U0155 and U0168. I suspect the P0431 may be getting tripped by the P0303. But am not sure what is kicking the two new U codes.
I plan disconnecting the battery, cleaning all grounds, and checking the ASD relay.
Os of now it wont start, so that is my priority. Any other suggestions before I start replacing parts?
Thanks
Chris