might need new 02 sensors but dont know. HELP

cb18201

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Oct 25, 2003

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Mar 14, 2004

#1

• Mar 14, 2004

• #1

i went to emissions testing not to long ago and i just barley passed. i had my stock h-pipe with 4 cats an a flowmaster american thunder cat back with the 40 series mufflers and tail pipes that turn into 3 inch after the axle. also my engine is bone stock. the guy said i had alot of unburnt fuel coming out of my exhaust. could this mean i need new 02 sensors? my gas mileage does kinda seem kinda crappy for stock engine but i dont really know for sure. also my car just hit 80k miles yesterday. let me know what you think. thanks

 

cb18201

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Oct 25, 2003

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Mar 14, 2004

#2

• Mar 14, 2004

• #2

anyone have any clue?

 

cb18201

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Oct 25, 2003

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Mar 15, 2004

#3

• Mar 15, 2004

• #3

someone?

 

W

whiteboy417

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Mar 3, 2004

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Mar 15, 2004

#4

• Mar 15, 2004

• #4

maybe

It could be the case, or could be a couple other things as well. Have you checked your computer for codes yet?

My car was running pig rich, but I was getting lean codes so I decided to replace the 02's. Still got the lean codes but wasn't running as rich. Cleaned the MAF and viola! No more codes and the car runs great. That could give you a place to start anyway.

JW

 

cb18201

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Mar 15, 2004

#5

• Mar 15, 2004

• #5

how do i clean my MAF, any special way?

 

stang_gt_1994

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Mar 21, 2002

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Powder Springs, GA (30 min. from Atlanta)

Mar 15, 2004

#6

• Mar 15, 2004

• #6

Take it out of the housing, take the black electrical piece off using a torx bit, clean the two wires with a Q tip that has rubbing alcohol on it.

 

donkey_punch

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northern****ingjersey

Mar 15, 2004

#7

• Mar 15, 2004

• #7

when was the last time you change the O2 sensors?
last time you changes the plugs, wires?
maybe, your cats might be bad.

 

cb18201

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Mar 15, 2004

#8

• Mar 15, 2004

• #8

donkey_punch said:

when was the last time you change the O2 sensors?
last time you changes the plugs, wires?
maybe, your cats might be bad.

Click to expand...

wires and tune up were done notto long ago, but i might do it soon, 02s have never been replaced, and i dont have cats anymore

 

adam302gt

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Feb 26, 2004

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houston/CS

Mar 16, 2004

#9

• Mar 16, 2004

• #9

you said you had your stock h-pipe with 4 cats? i thought we only had 2. if you decide to clean the MAF make sure you are VERY careful and do not break one of the 2 little wires, or else it will me time for a new one.

 

cb18201

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Mar 16, 2004

#10

• Mar 16, 2004

• #10

no 94-95s have 4 cats on them stock.

 

randomjoker

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Sep 12, 2003

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Mar 16, 2004

#11

• Mar 16, 2004

• #11

stang_gt_1994 said:

Take it out of the housing, take the black electrical piece off using a torx bit, clean the two wires with a Q tip that has rubbing alcohol on it.

Click to expand...

remember not to put it on until its completely dry.