Why is my MPG so poor?

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01-17-2015, 02:44 PM

#81

Child_uv_KoRn

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Leaks aren't going to hurt mpg. Maf and/or O2s lol
It would be cheaper to replace them than spending money on more gas.

Idk what kind of affect clogged precats could do to mpg, but I can guarantee that they're toasted from all of the fuel LOL

Last edited by Child_uv_KoRn; 01-17-2015 at 02:50 PM.

01-17-2015, 03:29 PM

#82

argenis69

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Quote:

Originally Posted by Child_uv_KoRn

If maf or o2 sensor is bad, doesn't it turn on the check engine light?

01-17-2015, 04:35 PM

#83

D.Stillwell

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^ Not always.

It had to be exhaust/o2's so since you found no leaks it must be that your o2's have taken a crap but never threw a code.

01-17-2015, 04:51 PM

#84

argenis69

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Quote:

Originally Posted by D.Stillwell

^ Not always.

It had to be exhaust/o2's so since you found no leaks it must be that your o2's have taken a crap but never threw a code.

Ok, cool. And how can I know and test which o2 is bad?

01-17-2015, 04:57 PM

#85

george__

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Quote:

Originally Posted by argenis69

Ok, cool. And how can I know and test which o2 is bad?

Might as well fix both fronts

01-17-2015, 05:13 PM

#86

nestorlugo

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Quote:

Originally Posted by argenis69

Ok, cool. And how can I know and test which o2 is bad?

There's a procedure on the fsm

01-17-2015, 05:18 PM

#87

george__

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Quote:

Originally Posted by nestorlugo

There's a procedure on the fsm

http://www.nicoclub.com/FSM/Maxima/2002/

Download the EC file

01-25-2015, 09:54 AM

#88

argenis69

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Quote:

Originally Posted by D.Stillwell

^ Not always.

It had to be exhaust/o2's so since you found no leaks it must be that your o2's have taken a crap but never threw a code.

So, on Friday afternoon after work I remote started my car and when I was approaching my car I saw this on the passenger side right in front of the rear wheel from the muffler, http://i1381.photobucket.com/albums/...psletfqkoe.jpg .

-Was this the type of leak your were talking about?

-Will this leak make the car consume so much extra gas?

Last edited by argenis69; 01-25-2015 at 10:20 AM.