bad o2 sensor

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Oct 29, 2003 | 06:39 PM

remmers

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Mountain Pass

Joined: Sep 2003

Posts: 188

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From: Michigan

bad o2 sensor

on a 351 if there is a bad o2 sensor will that cause the engine to run ruff at idle

Oct 29, 2003 | 07:05 PM

hyperpunkguy[F150]

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as far as i know from other ppls cars it will cause the engines rpms to go up and down slightly while idling. it will be noticible to the ear.

Oct 29, 2003 | 08:36 PM

krocklein

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Joined: Aug 2003

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From: Long Island

Does it initially run good when you first start it up?(thatis, cold?)

Oct 29, 2003 | 10:03 PM

hyperpunkguy[F150]

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what do u guys think of my reply was it correct?

Oct 29, 2003 | 10:27 PM

remmers

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Mountain Pass

Joined: Sep 2003

Posts: 188

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From: Michigan

it sounds like it is running unregulated if you understand what i mean but as soon as i rev it up it seems to be fine..i have a exhaust manifold that is leaking could that be part of the problem

Oct 29, 2003 | 10:34 PM

hyperpunkguy[F150]

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ya thats what i meant. it only seems unregulated while idling.

Oct 29, 2003 | 10:50 PM

remmers

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Mountain Pass

Joined: Sep 2003

Posts: 188

Likes: 1

From: Michigan

and it seems that is where one of the leaks is right by the o2 sensor

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