rwat96
NAXJA Forum User
- Location
- Colorado Springs, CO
I've had the same problem with my 98 Jeep. I have a new fuel pump and pickup strainer. I've also had the CPS replaced. Then he wrapped the full rail in heat wrap because of a published notice from Jeep regarding a vapor lock in the fuel rail around #3 injector. Also used a lab scope to graph the waveforms of the crankshaft and camshaft position sensors. All that and the ignition coil were ok. The 5 volt reference signal was ok also. Any other ideas?
Clean the sensor ground, which is at the dipstick bolt, and do so very thoroughly. After that smear it all up with dielectric grease. Doing this fixed all of the weird no start, dying and poor running quirks I was getting intermittently. My connection was loose and dirty, so remove it as a possibility before doing anything else.