Hello I have a 1998 wrangler 4.0, 4wd, manual trans. I was driving home and it shut off out of the blue. All lights work and it cranks but no start. Check for spark and their is none. Also the fuel pump doesn't prime. I checked the fuel pump relay and it is fine but their is no power going to it as a matter of fact their is no power to it or the horn relay but all the others are in the box are fine. I replaced the CPS and still nothing. I then took it to a shop and they put in a new distributor and wires and had me pick it up. Fired right up but as I was driving home not 15 minute later it shut off with all the same symptoms all over again. I'm so consued I've checked every last fuse and they are fine. Any help woul be greatly appreciated! Thankyou for reading
05-13-2013 07:27 PM
Does the fuel pump cycle on then off 1-2 seconds later when you first turn the ignition switch from the 'Off' to the 'On' (not Start) position?
05-13-2013 07:35 PM
When it is not starting, is the cluster working OK, like are the gauges working & the various lights coming on with the key on? Also do the radio, wipers & turn signals work?
05-14-2013 11:52 AM
No the fuel pump does not cycle. And yes all of the gauges and lights are working
05-14-2013 01:15 PM
What about the radio, wipers & signals?
06-05-2013 01:06 PM
Yes they all work as well
06-05-2013 01:13 PM
If the fuel pump isn't even cycling, see if its relay inside the Power Distribution is turning on-off as it should when the ignition switch is first turned on. You'll need a helper to turn the ignition switch on while you put your ear next to the relay to see if you can hear it click on-off. If you hear it clicking, odds are that the fuel pump is bad. A volt meter or test light to test for 12 volts turning on-off at the rear at the fuel pump's power plug would help to verify it. The plug is on the driver's side where where it goes into the gas tank skidplate to power the fuel pump.
06-05-2013 01:15 PM
Check 5volt on one of your sensors we had a pcm stop sending out 5volt from one of the two legs tied the other in and everything was fixed.