Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: jtp on August 07, 2006, 09:32:01 PM

Title: PCM location
Post by: jtp on August 07, 2006, 09:32:01 PM

Help please
trying to locate PCM on 2000 Grand Cherokee, new shape.

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Post by: tim_aka_tim on August 07, 2006, 11:51:34 PM

Just looked thru the official DC service manual for a 2000WJ and buggered if I can find where it is. One for Dr Mike methinks.

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Post by: Mike Pavelin on August 08, 2006, 08:58:10 AM

Passanger side bulkhead under the hood with three big multi plugs.

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Post by: MK1 on August 08, 2006, 09:12:53 AM

Is PCM yanky for ECU, what does it stand for?

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Post by: isle of man on August 08, 2006, 09:20:47 AM

Quote from: "Mark Barrs"

Is PCM yanky for ECU, what does it stand for?

"pulse code modulation" and yes it's an "ecu"


peter henry

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Post by: Mike Pavelin on August 08, 2006, 09:21:54 AM

Powertrain Control Module.

Because it controls not only the running of the engine, but stuff such as charging, A/C compressor, fans, cruise control etc.

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Post by: jtp on August 08, 2006, 09:15:24 PM

Thanks for the help
Hoping that refurbing/cleaning connection will eradicate some running problems i encounter. Dealer recommended changing PCM but post on Jeeps Unlimited had some sound advice.
So far have spent £500 on o2 sensors and failed analisis by main dealers.
Still a great jeep!

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Post by: Anonymous on August 08, 2006, 09:30:32 PM

Quote from: "jtp"

Thanks for the help
Hoping that refurbing/cleaning connection will eradicate some running problems i encounter. Dealer recommended changing PCM but post on Jeeps Unlimited had some sound advice.
So far have spent £500 on o2 sensors and failed analisis by main dealers.
Still a great jeep!

Soz lad you might have been ripped off...
 Diagnostic check at Westbury plus another one and O2 sensors replacement £302.17

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Post by: jtp on August 08, 2006, 10:13:20 PM

Actual 4 diagnostic checks and 2 no o2 sensors
Tried 3 main dealers so far.
Hoping DIY and help from forums will be better value.

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Post by: Mike Pavelin on August 09, 2006, 10:04:51 AM

You're better off persisting at one place. If you keep taking it to different places you'll keep getting charged for the same work over and over again.