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Help...engine rumble at startup, Multiple Codes
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=36102
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Author:  jmoomaw [ Sat Sep 20, 2008 9:34 pm ]
Post subject:  Help...engine rumble at startup, Multiple Codes

The last two days when starting the engine (once in the afternoon after it sat for 4 hours in the shade (50 degrees), and then this morning the same thing happened.

Jeep Liberty CRD 2005: The engine starts normal and then 20-30 seconds later it starts to rumble, shake and then stop. It doesn't happen again for the day. This morning I stopped the engine in the middle of it and it happened again after I started it. It stalled out. Once I started it, it didn't happen again.

Engine Codes keep coming back: PO 107 MAP Sensor Low Voltage, PO299 Turbo Underboost, PO401: EGR Value restricted.
I changed the air filter (New K&N), the dealer diagnosed the EGR Valve as needing replacement, I soaked and clean a huge amount of black tar off the MAP Sensor.

Could this be a timing belt issue?

I bought my Liberty off E-Bay and it doesn't look like I will get any help on this. I have had the car for two weeks now. What I thought was an E-Bay purchase turned out to be between him and I when I thought as the high bidder(the reserve not met), it was my choice to meet his price. The E-Bay insurance may not help. Before I get legal or real pushy, I would like to get a handle on what this could be.

Any help would be appreciated.

Jim

Author:  Guest [ Sat Sep 20, 2008 10:44 pm ]
Post subject: 

Well, if you bought the vehicle as-is, with no warranty expressed or implied, it's not the seller's responsibility to help you out. Perhaps this is WHY he was getting rid of it.

Post in the CRD forum, they might have a better answer.

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