bad gas mileage and trouble taking off

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05-20-2013 | 07:22 PM

#16

fiveoformula

Newbie

Joined: May 2013

Posts: 17

Likes: 0

From: Northwest

Year: 1988

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by CCKen

Where does the computer get its information to know the engine is running lean and how much fuel to add?

Oxygen sensors. But just because the o2 is reading lean/rich doesn't mean theres a problem with them, could be a fuel delivery problem or vacuum leak or even a terrorable miss-fire. I just didnt want him thinking that new oxygen sensors would be the "cure all, fix all" to the problem. That being said, you could very well just have a bad sensor.

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05-20-2013 | 07:52 PM

#17

monstercherokee

Thread Starter

Seasoned Member

Joined: Sep 2011

Posts: 474

Likes: 0

From: segoville tx

Year: 1997

Model: Cherokee

Engine: 4.0 6 cylinder

Well i striped the sensor hole out and the new sensor luckily i had a spare cat and got another sensor... took my cat off and clumps fell out of it.. put everything back to gether and runs like a top

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