bad cps?

[Dodgecrawler2011]

Long story short my truck has been somehow loosing its gap. Ive set it 3 times now seems to do it after it warms up. I loose od ac ans doesn't charge. I set thw gap and everything is good for awhile. Well yesterday I tryed to set the gap again to no avail. Did it about ten times. Gave up and parked it. Sat all night fired it up this morning and what do you know everything thing normal again. Does it matter when I set the gap? Cold motor hot motor.?

[BC847]

It shouldn't matter. there is no preference in the FSM about it.

It shouldn't matter if it' off a little. It's just a sensor looking for the notches in the damper going by. You might consider double-checking the plug right there at the IP to ensure it's making a good connection with the wires themselves intact.

If I'm not mistaken, I don't know that the CPS is a problematic thing.

[Dodgecrawler2011]

Thanks for the reply I wasnt sure because like i said 3 times before yesterday I ser it and good to go. Now yesterday was a differnet story thats why I assume its going bad. I also was using metal feeler gauges. Didnt know I wasnt pose to up until about a hr a ago

[BC847]

Actually, now that I think about it, the danged harmonic damper isn't necessarily round. That may explain the variance you're seeing.

The FSM is very clear in that . . .

Be sure the sensor is not near either of the notches on the vibration damper. If sensor is adjusted at or near these notches, it will be damaged when the engine is started.

Just rotate the engine so the sensor is close to centered between the notches of the damper. and you should be good to go.

[Dodgecrawler2011]

Ok I know for a fact I have not beem seting it close to the opens. I knew that part of it. But what Would make it not be right letting it sit over night have to do with it. I got a new one just in case

[Dodgecrawler2011]

Also what is the fsm and where is it located

[BC847]

But what Would make it not be right letting it sit over night have to do with it.

Dunno.

Also what is the fsm and where is it located

Factory Service Manual.

They can be had in paper or CD format. Ebay, Genoes (?), etc.

[Dodgecrawler2011]

Ah still gettinf use to the internet slang

[Dodgecrawler2011]

But what Would make it not be right letting it sit over night have to do with it.

Dunno.

Also what is the fsm and where is it located

Factory Service Manual.

They can be had in paper or CD format. Ebay, Genoes (?), etc.

Is it reading the while time truck is running or does it go thur cycles? Maybe it was shutoff yesterday with it reading on the dampner where its pose to?

[Dodgecrawler2011]

Set as you stated was the correct way. Truck was good for about 10 starts now its right back at it again. I guess it time to put the new cps on.

[Dodgecrawler2011]

New cps did not slove the problem. This is my 2 nd and last first gen. Last two trucks have ruined me

[D-dog357]

My bet would be a bad crank sensor. With many electrical items, when they go bad, will work when cold but not hot.

[ellis93]

New cps did not slove the problem. This is my 2 nd and last first gen. Last two trucks have ruined me

What brand part did you buy? Did we go to the zone and buy a gp sorsen pos el'cheapo or did we buy the repackaged duralast gp sorsen for 20 bucks more.
If you indeed bought cheap parts they can be bad out of the box. I deal with this fact every day,that's why I only buy borgwarner,echlin,standard,or dealer parts. Nothing like installing a bad new part to ruin your life

This ain't rocket science or brain surgery, if the AC wont work and the alt isn't charging there is not but a few things that can cause it. Computer,cps,bad ground or bad power source. Those four things are the starting point to diagnosing said issues. Check out the electrical section,there should be wiring diagrams that I posted there....if they are not in the stickies.