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madmaxyj 01-20-2012 11:59 AM

My 95 YJ 2.5L is cutting out. Any advice?
3 Attachment(s)
My 95 YJ started cutting out between 3,000 and 4,000 RPMS. I thought maybe the throttle body was all gummed up so I took it off, cleaned it good with throttle body cleaner and put it back on. Seemed to fix the issue for about a day then it started cutting out at all RPMS. The only way to make it not cut out and backfire is to keep the RPMS under 2,000.

I changed out the following last night:
Fuel Filter
Air Filter
Oil Filter

Still doesn't fix the issue.

Any ideas?

madmaxyj 01-20-2012 12:00 PM

I also removed the Cat and Muffler recently - just so you know everything.

flatline 01-20-2012 12:11 PM

check fuel rail pressure. other things TPS, crank sensor, cam sensor, map sensor. I'd start with fuel pressure, check map sensor vacuum, but I think it will be the crank sensor.

Xpress 01-20-2012 01:22 PM

My guess would probably be the bad crank sensor..


Originally Posted by madmaxyj (Post 1941202)
I also removed the Cat and Muffler recently - just so you know everything.

Psstt... It's a Federal Crime to remove emissions equipment, and posting about such things is forbidden on this website ;)

madmaxyj 01-20-2012 04:15 PM

Cat and Muffler
I put it right back on. Just posting that so you guys knew I checked it

madmaxyj 01-20-2012 04:25 PM

Crank Sensor
There is no Cam Position Sensor for my Y/M/M.

Going to check fuel rail pressure tonight as well as replace the MAP Sensor, Throttle Position Sensor and the Crank Position Sensor.

I will let you ll know how it goes.

Thank you all so much.

anamorph 01-21-2012 10:15 PM

Check the fuel regulator on the fuel rail. It is located at the very front of the rail; that is if you have an inline 6.

yjmark 01-22-2012 11:14 PM

change fuel filter

anamorph 01-23-2012 05:52 AM

Your cam positioning sensor is located in the front of the trans on the bell housing. Should be towards the top on the drivers side. It is basically a magnet that senses a notch in the flywheel as it spins. This shouldn't cause backfire however. The TPS sensor is on the backside of the throttle body. This will cause a fluctuation of RPM's and a stall as you come to a stop; deffinitely will cause back fire. Your distributor may need an adjustment also. Put a timing light on it before you spend a few hundred in parts. Good Luck! Hope this helps.

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