tman354p

hey guys i got a 90 jeep cherokee with the 4.0 and today i changed the cps and now it wont start it will crank but no start anyone know what might be wrong.

sthon

What was wrong with the old cps? Where did you get the new cps?

cruiser54

Have you tested either the old or new CPS?

Could be lack of fuel.

More work on your end is required.

tman354p

Well I was having stalling and starting issues but I did not test the old or new as I don't have access to a multimeater as of right now were suspecting spark right now.

Monster Mopar

I'd suspect the new cps is faulty, it wouldn't be the first time... Especially if you didn't get it from the dealer.

stev-o

If it ran before swapping the cps then u probably replaced it with a faulty cps
We need more info to really help u out

stev-o

U may or may not have spark but with a faulty cps the motor won't start because the computer isn't reading what position the motor is in

cruiser54

Time to invest $10 in a multimeter..............

tjwalker

Best $10 you will ever spend.

I agree that the new crank sensor is suspect. I answer multiple threads every week about issues with aftermarket units. Because of that, I use and recommend ONLY Mopar crank sensors.