cps Q

[minikrew]

i have a 1998 4.0 ranger (droped a rod ) and i pulled the motor got a later model motor from a salvage yard new motor has a two wire cps old motor had a three wire cps can i put the three wire cps from the old motor on the new motor

 

[RonD]

Yes, you have to.

3 wire is a hall effect sensor, that is what your computer will "understand".
2 wire is a variable reluctance sensor, your computer wouldn't "understand" the signal
And visa versa

 

[minikrew]

thank you very much for your reply. can this be done without pulling the shaft? i have to have my truck running by 4pm sunday

 

[RonD]

No, You have to pull the whole cam synchro unit out, and swap it as far as I know, you can look at both to see if whole top of the unit comes off.

You can pre-time the engine by rotating crank until the VR synchro is where it should be, #1 TDC, then pull it and swap in the HE synchro.

Engine will run without CPS, CPS is used to fine tune Sequential fuel injection for better MPG and performance

 

[minikrew]

thanks agin ron you have been a big help