Cranking but not starting

[koooooooz]

http://autorepair.about.com/library/a/1i/bl637i.htm

this the web site i have been on it talks about a slotted CPS i don't no if that will fix my truck but i do know that there is no spark it cranks but will not start . it gives part # but they don't check out

 

i am looking for this mysterious Slotted CPS if anyone can help that would be great

 

also the CPS i have not the Gromet it tore up and would it be possible for it to start at all whitout the gromet ( or a bad Gromet) because it started ones with no gromet and now won't start

[jeepthing07]

I think the slotted CPS is just oblong holes so you can adjust the clearance between the sensor and the flywheel. if you don't have one file the holes out. They probably give a clearance for it if i can find my 89 chiltons manual i will look it up. I also remember hearing about a sensor that is known to go out if it gets wet on the Renix 4.0's i think it was on http://www.allpar.com

 

 

Edit: http://www.allpar.com/mopar/40.html

Bob Sheaves wrote:

The 4.0L was a strong performing engine, no doubt. There were a couple of issues with the basic design, including leaks; the oil pump was notorious for wearing out at around 145,000 to 155,000 miles, and the TPS (throttle position sensor) on the 1989/1990 models would fail if someone spit on the sidewalk.

 

might as well check the voltage on the TPS wouldent hurt...

[Pete M]

I don't know of any "slotted" CPS and all I can think of is this mod done to any ol' CPS to make is easier to install (since you can thread in the bolts first, then put the CPS in, then tighten the bolts down).

Jeep on!

--Pete

 

[koooooooz]

look at the pic u put up i wish i would of took a of mine but it looks like this

i can see the mod you are talking bout but mine looks different from the one you have even if they would not of modded it look at the actual sensor part they look different and what about the gromet could it start once and then not want to start agin if the gromet was not there or tore up

 

and pete m you posted this pic

 

this sensor looks different also

[Pete M]

Different brands of CPS might look a bit different. From what I can tell from reading that article, the "slotted" CPS has the elongated hole that allows the CPS to be moved closer to the flywheel. This is just a guess though. Are you saying you tried a new CPS and it worked once but then stopped? Are you certain you don't have any spark?

[koooooooz]

we tried a new cps and it would not do anything becides turnover so we took it off and let it sit and when i put the old cps back in so we could take it to the shop or something it satarted AND RAN i drove it around parked it back at my house tried it when it was hot it started and then let it sit till it was cold and it would not start

[carnuck]

Sounds like a bad connector to the CPS or the fuel pump relay is dying. I found the replacement harness for the CPS in my stuff. Mopar #83100062 (came with CPS) I bought it back in 2000 for $40 from the dealer close out. This was for my 4 cyl '86 with TBI.