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  #1  
Old 07-02-2004, 08:51 PM
georgedexter georgedexter is offline
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TPS or CPS?

89 cherrokee 4.0 automatic getting intermitant starts,occasional dead stops while driving. Idles smooth,drained tank,changed filter,rotor,plugs ect. Fuel pump and coil fine.Cleaned ballast resistor. RUNS GREAT when running. WILL START WITH THE HELP OF EITHER. This leaves the sensors,taking a poll on TPS vrs. CPS. Crankshaft position sensor less expensive but I've been told its a bear to get to. No, my local junkyards won't sell electric parts!! Thanks all.
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Old 07-03-2004, 03:45 AM
mansjeep mansjeep is offline
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Re: TPS or CPS?

Tps...
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Old 07-05-2004, 10:27 AM
mieth mieth is offline
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Re: TPS or CPS?

I'd get a voltmeter so you can check the TPS output voltage before spending the coin...
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Old 07-05-2004, 11:04 AM
georgedexter georgedexter is offline
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Re: TPS or CPS?

mieth,just happened by comput and checked forum,saw your message. THEN I bumbled onto this website,I'm amazed. http://www.lunghd.com/Tech_Articles/...iagnostics.htm
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Old 07-05-2004, 12:48 PM
crs46 crs46 is offline
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Re: TPS or CPS?

What does the CPS look like and where is it located?
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Old 07-05-2004, 05:35 PM
georgedexter georgedexter is offline
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Re: Re: TPS or CPS?

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Originally Posted by crs46
What does the CPS look like and where is it located?
heck out the website I quoted above, it will school you... http://www.lunghd.com/Tech_Articles/...iagnostics.htm
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Old 07-05-2004, 08:35 PM
mansjeep mansjeep is offline
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Re: Re: Re: TPS or CPS?

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Originally Posted by georgedexter
heck out the website I quoted above, it will school you... http://www.lunghd.com/Tech_Articles/...iagnostics.htm
Dude, would also like to know where the CPS is located and how it looks like. The article above was very informative, but it also doesn't show the location as well as how it looks like. Thanks!
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Old 07-05-2004, 08:56 PM
georgedexter georgedexter is offline
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Re: Re: Re: Re: TPS or CPS?

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Originally Posted by mansjeep
Dude, would also like to know where the CPS is located and how it looks like. The article above was very informative, but it also doesn't show the location as well as how it looks like. Thanks!

Allright you guys, the CPS is a master of hidden misery. It is on the bell housing,(between motor and tranny) on the drivers side and at about 11 o'clock if you are looking from behind. You have to be absolutly under the jeep,legs out by the drivers front wheel,position your head just behind bell housing and do an 'ab crunch' while looking up! Then you will see it. You may even reach up and touch it. But it takes a whole lot of doing to get a wrench on it. You need a wobbely head socket and alot of time and cursing. The guys at the junkyard suggest opening a hole in the floorpan to access it! Try this link http://autorepair.about.com/cs/faqs/l/bl557h.htm
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Old 07-06-2004, 09:22 PM
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Saudade Saudade is offline
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Re: TPS or CPS?

OMG!! Don't cut the floor pan. I changed mine quite easily. I linked several extensions together with a universal (wobbly thingy) and the proper size socket. Came right out.

Before I disconnected the wiring, I tied a string to the TPS side of the connector. When I pulled the old TPS out, I had the string to connect the new TPS to so I could pull the wiring up above the engine.
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Old 07-06-2004, 10:01 PM
georgedexter georgedexter is offline
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Re: Re: TPS or CPS?

Quote:
Originally Posted by Saudade
OMG!! Don't cut the floor pan. I changed mine quite easily. I linked several extensions together with a universal (wobbly thingy) and the proper size socket. Came right out.

Before I disconnected the wiring, I tied a string to the TPS side of the connector. When I pulled the old TPS out, I had the string to connect the new TPS to so I could pull the wiring up above the engine.
Don't panic saud,I wasn't really gonna cut the floor pan. (although a nicely finished,hinged trap door would be ok there) I think in your haste you kept saying tps when you meant cps. This will definatly confuse the meek. HE MEANT CPS!!!
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Old 07-08-2004, 07:53 AM
lunghd lunghd is offline
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Ya can change it a LOT easier if you'll support the transmission crossmember w/ a floor jack, remove the four bolts holding it in place and SLOWLY lower the transmission crossmember w/ tranny by about 1-2 inches. Be carefull not to bend stuff but dropping it this small amount will give you plenty of room.

Clean your cps connector and use some dielectric grease in it... older XJ's (primarily Renix systems) have a real issue with connector oxidation / corrosion leading to wierd electrical gremlins that often imitate sensor failure.



GeorgeDexter - Thanks for posting the link to my site: www.lunghd.com .
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Old 07-08-2004, 08:24 AM
rotorfloat rotorfloat is offline
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Re: TPS or CPS?

thanks for the link, George. Very informative
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  #13  
Old 07-08-2004, 09:10 AM
georgedexter georgedexter is offline
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Re: TPS or CPS?

rotorfloat and lunghd you're both welcome. Lungy,yours is a FANTASTIC website and I hope more people visit it. G. Dexter
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Old 07-09-2004, 01:29 AM
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Re: Re: Re: TPS or CPS?

Yikes!! I did mean CPS. Guess I did get too excited and the thought of
a sawzall slicing through the floor. lol.....
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  #15  
Old 07-09-2004, 09:33 AM
georgedexter georgedexter is offline
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Lightbulb Re: Re: Re: Re: TPS or CPS?

Quote:
Originally Posted by Saudade
Yikes!! I did mean CPS. Guess I did get too excited and the thought of
a sawzall slicing through the floor. lol.....
Hey Saud...I wouldn't think of using a sawzall.....probably use pnuematic tin nippers. I still think a nicely finished trap door would be OK. Perhaps I could adapt a gas filler door or some such thing. Glad we're laughing...
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