New rebuild ran fine for 4 hours (1 hr @ a time or so) broke in the new cam @ 1500 to 2 k for 45 minutes etc. started it to show my son, It ran fine went out a hour later and crank no start ,changed Crank & cam sensors (I bought cheap ones on eBay "I know I know" ) I back probed them and got the 5 v constant on both no pulse on the cam sensor and I haven't probed the pulse on the crank sensor I have to sharpen the paper clip to get it in there, I have Mopar parts in the cart @ rock auto $135 shipped , I checked the coil I get signal from 1-6 2-5 3-4 cant check primary to secondary ( I guess because of a diode (that's what I read) , All fuses and relays checked good fuel pump sounds off when key is turned on even shot some ether in there. Gauges work, scanner showed P0340 CPS sensor A or single circuit & P1694 Manufacture control once, it shows nothing on repeated try's . I am just wondering what else I should check before I bite the bullet are there any other sensors that will cause a no start . TIA , Oh by the way I changed the crank sensor from the top in 20 minutes if you have to do one get a long 11 mm kinda offset wrench and use a little anti seize on the bolts when you install the new one.






no muffler @ the time

 

It sounds like you have it covered - I'd just double check the wiring (make sure the cps harness didn't catch on the exhaust, etc) and if all that is good I'd suspect the el cheapo cam and crank sensors. Considering the time and effort to doing an engine rebuild, don't you want the good stuff in there - especially if that's your super clean engine compartment in the video!

I mean, ODB is telling you straight up that the CPS signal is flaking out, so there's no reason to doubt it that I can tell.

 

I think the P0340 points to the camshaft position sensor. Sometimes, especially on cold/new ones the contact will be a little proud (sticks out a little more than it should) and it can get destroyed by the spinning metal tone ring that it is reading. Will result in a sudden loss of ignition, that will not be intermittent (meaning once it fails, it stays failed). Check that first.

 

Yea , I want the good stuff but i'm disabled limited income heart attacks, and I got the cheap real cheap I talked to the guy he said no problem and refunded me & told me to keep them , I have the cash now I just wanted to make sure I didn't miss some other sensor. I take my time and do it right I thought I might get lucky with the cheap then get Mopar later , that didn't pan out. ��

 

Yea P0340 is cam sensor , All I can find on P1694 Description No Messages Received From The Powertrain Control Module is the generic description for the P1694 code, but the manufacturer may have a different description.
(I believe this can be relater to crank sensor too!)
Possible causes: CCD Bus (-) circuit open between Powertrain Control Module (PCM) and Transmission Control Module (TCM) CCD Bus (+) circuit open between PCM and TCM Transmission CCD bus wiring damaged Faulty TCM

 

Jordan, is that true of cam sensor on a distributor-less system as well as the dizzy system? I imagine it would, but figured it wouldn't hurt to ask.

Papa - I was thinking about this and it occurred to me - do you have the old sensors? It might be a good idea to swap them out if you do and see if it starts.

 

I do ! And I did, I bit the bullet and ordered the Mopar parts when they get here I will do them one at a time and test, I wanna know exactly which is a@ fault . I will update then. Thanks for the input guys, It is greatly appreciated .

 

Yup, my experience is that the P0340 is generally related to the camshaft position sensor "circuit" (includes wiring, connector, etc).

Good luck and keep us updated!

 

Ok, gents it was a faulty cam sensor , I went ahead and put the new Mopar crank sensor on too, I'll keep my old OEM crank sensor in the glove box, Pitched the el cheapo cam sensor, I'm pretty sure my OEM cam sensor was the culprit all the time. Oh Well lesson learned .
( I'm 58 I should be done learning lessons) She runs like a kitty with it's tail on fire again. So let it be said when you read on the forum to buy the OEM just do it, The cheapo crank sensor worked but who knows for how long it will be kept also just as a get me home unit if ever needed.

 

MOPAR only for sure on these two if nothing else. I replaced two AZ sensors, both brand new, after a week. Oh, replaced them with a junkyard MOPAR. That was 4 years ago. Still ticking fine.