Best CPS ?

[Warren Mohler]

What is the best CPS out there for an 89 4.0L. Rain ,sleet, snow out and mine must be getting weak, left a wake this afternoon for a good friend and MJ wouldn't start, unplugged and plugged fired right up so I will be replacing soon, is MOPAR still available?

[Ωhm]

Cruiser has a tip out there for drilling out the mounting holes and moving the CPS closer to the trigger wheel (increasing signal strength).

RENIX CPS TESTING AND ADJUSTING

[eaglescout526]

Mopar should still be available. Numbers a dwindling but they are still around.

[MJCARENA]

I had the same issue in my XJ. Dirty connector, had to do the unplug, plug about every 6 months. Finally just jumpered around the connector and never had the issue again. I left the connectors connected and just spliced wires around them, in case I ever had to replace the CPS.

[Warren Mohler]

Thats a good idea,I should measure volts, mine is original I believe so may just replace as it's 31 years old, sucked standing in pouring rain and sleet today to get at it, and of course lock tab broke off

[eaglescout526]

I’m using a 30 year old CPS. Works great! Came from a WA motor. 

[Eagle]

The factory had a TSB and a kit to bypass the C101 connector so the two wires from the CPS went directly from the CPS connector through the firewall to the ECU. This was supposed to alleviate signal loss. I don't know if the associated kit (which was the CPS with the replacement wiring harness) is still available, but it should be easy enough to make up your own.

 

Cruiser, do you by any chance have the part number and/or instructions for that kit?

 

[Warren Mohler]

Yep, put one in once,pain in the butt

[fiatslug87]

Here's the CPS direct wiring TSB

CPS-87-90-update.pdf

[Eagle]

That's the one. Thank you.