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CPS questions


rustedwon
02-01-2005, 12:57 AM
If the CPS starts going bad I realize that starting the engine becomes more difficult.Does this also figure in with the overall running of the engine,such as timing?Ive checked my CPS on my 89 4.0 and it reads 380 ohms resistance.I beleive this is means its starting to go bad,would this also make it idle rough?
gtmud
02-01-2005, 08:11 AM
CPS? What part are you talking about? TPS?
rustedwon
02-01-2005, 01:43 PM
OOPS!!!Crank position sensor!
gtmud
02-01-2005, 01:50 PM
I feel stupid, Yes it could make it run rough, if you checked it and its out of the tolerance, than I would replace it. Not sure how involved it is, let me know how it goes.
Dale Aeppli
02-01-2005, 05:42 PM
OOPS!!!Crank position sensor!
give year make and engine Dale jeepman600@sbcglobal.net
rustedwon
02-02-2005, 01:11 AM
give year make and engine Dale jeepman600@sbcglobal.net
1989 jeep cherokee 4.0L
Dale Aeppli
02-02-2005, 04:49 PM
If the CPS starts going bad I realize that starting the engine becomes more difficult.Does this also figure in with the overall running of the engine,such as timing?Ive checked my CPS on my 89 4.0 and it reads 380 ohms resistance.I beleive this is means its starting to go bad,would this also make it idle rough?

Ohms early 4.0's 125- 275ohms at terminals A & B on ignition control module mounted on shock tower. Dale jeepman600@sbcglobal :2cents:
muskypro
02-04-2005, 10:01 PM
my 90' 4.0l L6 takes a while to crank over. could it be that too?? i just have delt with it. not know what it was! Thanks Justin
Dale Aeppli
02-05-2005, 03:29 PM
my 90' 4.0l L6 takes a while to crank over. could it be that too?? i just have delt with it. not know what it was! Thanks Justin

Hi, possibbly , how long has it been since a full tuneup,--plugs, plug wires cap and rotor. Air filter change. Plus throttlebody cleaning.
Dale jeepman600@sbcglobal.net

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