Hi All, The old '93 Grand Cherokee started missing badly a few weeks ago. I remembered reading here about the Crankshaft Position Sensor causing some similar problems and that you might unplug it and get the car home. Well, I've unplugged it a few times since then and the car runs okay for awhile. I've been putting off that 4 hour, blue-aired, skinned knuckle job for too long. Now when I unplug it and plug it back together, it works for only a few minutes. Can I be confident that the problem is the CPS and not something else I've been resetting by unplugging it and plugging it back in? I'll call the dealer in the morning to get a new one if if you guys think so. Thanks for all the help. From: The Procrastinator. Denny
CPS on Grand Cherokee?
Oct 17, 2005
8 Replies
D did pass the time by typing:
?unplug? The engine shouldn't even run without the Crankshaft Postion Sensor.
Have you pulled the codes?
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Missing can be all sorts of things including the CPS but not limited to plugs, wires, coil, low battery voltage, loose injector connections, etc.
If you do replace the CPS, make sure you get the correct one. There are two potential units for the 93.
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Also check with
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for price.They will give you the "best dealer price", expect to pay morefrom a local dealer.
You should clean it while it was apart. Now it sounds like you have worn out the scratch area. One fix is to remove the plug from the circuit and solder the wires together.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT'sD wrote:
When we did Ed's Cherokee last month the time to replace the sensor was about an hour and that included the time pushing it uphill so we could roll it into my garage out of the rain.
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Thanks all for the help. Doug, the engine was off when I unplugged the sensor. It seemed to reset or something. Everything else causing missing was checked. Well, not everything, but the most obvious ones anyway. I did get the right one actually. Dealer happened to have it in stock. Billy, I think the operative word here is 'we'. Just little 'ol me took
3+ hours a couple years ago replacing the durn thing. Turned out that time that it wasn't the problem. Was a bad wire in the harness from the coil to the computer. Anyway, all said and done, I dropped it and the part at the shop and it took them an hour. Left me clear headed to attend a job interview and not worry about it. The old girl seems to run stronger now. I do believe that was the fix. Thanks again for all your help. DennyOut of curiosity.....Which side was your sensor on?
Out of curiosity.....Which side was your sensor on?
We spent a lot of time looking for the sensor because all the references show it on the passenger side and we could not find it there..
I am not sure if I have spoken to anyone who also had it on the driver's side and I think there was some disbelief here in the newsgroup till I posted the photos of the location.
Little Eddie's '96 ZJ Grand Cherokee had the failure symptoms starting to appear a few weeks after we replaced Ed's CPS and he paid a shop to replace it
Billy Ray did pass the time by typing:
To my knowledge it's always been on the drivers side, 11 o'clock up by the fuel lines.
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