Gatchmo5710

Ive got a 96 country that has been driving fine til about 5 days ago. It stalled while driving, then started right back up and drove home. Next day did same thing, started up fine again. Later that same day same thing. Well it did it more and more til this morning wouldnt start back up. Seems like its not getting fuel. RPM's would drop to 0 then bounce back up mid driving. or drop to 0 and stall.

Fuel pump/ filter???
Any ideas??

Thanks

freegdr

check the wires to cps for burned or broken spots touching motor or metal and grouning out?

tjwalker

I agree that something with the crankshaft position sensor circuit might be in play here.

Here is a thread that gets into this more comprehensively.... Hope this helps.

http://www.jeepforum.com/forum/f11/c...ailing-639123/

Gatchmo5710

All gauges work fine. could it still be CPS?

also not temperature related

freegdr

mine did this the wires had rubbed a bare spot and were touching the head

tjwalker

Absolutely could be the crank sensor. The crank sensor is IMHO the most common sensor failure on the Jeep 4.0

Gatchmo5710

how much for that?$ should i replace that before anything else?

CAEMI

Sounds like this is one of those crap shoots - it's either the CPS or the fuel pump is failing.

I have heard the CPS is cheap...and it sure is easier to change than the fuel pump.

Gatchmo5710

just looked at cps and it looks fine/ no wear. should i replace anyways?

tjwalker

You cannot tell anything by looking at it.

You can test it for resistance values, but it would need to be tested when the vehicle is symptomatic, otherwise it might test okay.

If you pulled it out, you may as well install a new one.

Gatchmo5710

just replaced fuel filter. now im just gonna replace cps. looks to be about 50$ any tips installing it????

tjwalker

Check out this link for info on replacing it.

http://www.go.jeep-xj.info/HowtoCPSchange.htm

Be sure to let us know how it goes.

My hunch is that this will fix it.

Gatchmo5710

just replaced it. no difference. do i need to reset anything or something? any other ideas??? fuel pump??

Gatchmo5710

also i just noticed one of m co2 sensors ,going into my cat, wires is ripped. could this cause a problem?

ezab

That will not keep it from starting. I would check the fuel pressure before replacing anything else.