2000 e150 4.2 v6

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Dec 8, 2020 | 01:17 AM

Hillbilly Royalty

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Joined: Dec 2020

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2000 e150 4.2 v6

Code p0171 on and engine shakes when mann
teining a cruising speed any suggestions are more than welcome thanks ya all .

Dec 25, 2020 | 01:31 PM

MoeDaMaster

Mountain Pass

Joined: Nov 2016

Posts: 162

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From: Bremen, Germany

Quote:

Originally Posted by Hillbilly Royalty

Code p0171 on and engine shakes when mann
teining a cruising speed any suggestions are more than welcome thanks ya all .

This could be caused by unmetered air getting into the combustion area. Check if the spark plus are tightened ok first, after that have a look at the intake manifold gaskets. Also, check if the pcv valve and corresponding vacuum lines are ok.

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