Changing CPS

[Buckey]

Is there any tricks or anything I have to do when I change my CPS??

[comanche5L]

first of all, this job sucks. best way i found was to take the bolts out of the tcase skid, and let it drop down. disconnect the 4wd linkage as well. have the skid supported by a jack, and once everything is removed lower the jack until you can get at the 2 bolts for the CPS.

 

once its all lowered its only a matter of taking the 2 bolts out and changing the sensor for the new one, and you done.

 

ive tried it before without droping the tcase skid, and its is a real big pain in the @$$ to reach the top bolt. i even had extensions going out past the end of the tcase (yep it was riduculus!).

 

good luck!

[87manche]

use some grease, or a piece of a shop towel over then end of the socket, to grip the bolt. If you drop the bolt into the bellhousing you will likely be taking the trans out to get it.

[Buckey]

Ok I changed the cps and still no spark a roony.So is it possible to have a fuseable link done someplace???Is there any fuseable links in the system at all??If so where..I am coming up with nothing here it is totally confusinge me.

 

Buckey

[Duner]

Ok this sucks, springbreak I have worked all week teaching lifeguarding classes, today I sleep in late do some things around the house for my dad and jump in the truck to run down to the store and dam no start.

 

My dad pulls a plug wire and I have no spark so now I have to search my boxes of parts for the spare cps my dad said that he saved from the other trans.

 

At least it only breaks when it is in the driveway (knock on wood) I should have known something was up last week when it started right away instead of waiting the usual 5 to 6 seconds before firing.

[Kenosha Warrior]

I should have known something was up last week when it started right away instead of waiting the usual 5 to 6 seconds before firing.

 

the only true way to know if a jeep is going to give the ghost up on a part.

 

it runs like a normal car

[mjeff87]

Ok I changed the cps and still no spark a roony.So is it possible to have a fuseable link done someplace???Is there any fuseable links in the system at all??If so where..I am coming up with nothing here it is totally confusinge me.

 

Buckey

 

Didja check the rotor or the dizzy cap first? Start simple, and work your way up.

[87manche]

yep, start simple.

then get hard.

THe yellow wire(?, don't have the FSM handy) should have 12V going to it on the coil.

check that the ECU is getting power as well.

The fusible links are all by the battery, coming off of the start relay post.

DOn't forget to check all the grounds. After 20 years it's just slightly possible they've corroded.

Pay particular attention to that braided metal strap that goes to the head.

[Duner]

Ok couldn't find the old cps yet (lost in garage) but my dad followed the forum advice and unplugged the connector and cleaned it with electrical contact cleaner and wallah it runs again. So a little di-electric grease and were back in business. In the meantime I will continue searching for the other cps or go and buy a replacement and carry it with me.

 

For now it looks like I dodged the bullet and bought some time and your right anytime an jeep begins to act like a normal car I start worry and load the MJ with tools.

 

Jeeps have character and thats why we drive them.