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#49420 12/11/01 03:23 AM
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Hello. I'm a NECO member and I drive a 99 cougar with 40k on it so far. A CEL came up the other day. I ran autotap on it and it came up:
front bank lean
front bank lean
front bank lean
front bank lean
rear bank lean

Anyone know where I should start to fix the problem? I have gutted precats (MIL's working fine), dual exhaust, KKM for performance. Some people have suggested fuel filter or iat is the problem. Just looking for more opinions. Thank you!


Jeff
1999 Rio Red Cougar
WW body kit and spoiler
Eibach springs
OMP fsb
ST200 rsb and struts
Gutted precats, dual exhaust
#49421 12/11/01 03:41 AM
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Sounds like the upstream O2?s? do you have a code? 1131 or 1151 (IIRC)?


- 1996 Mystique Spree 2.0 ATX
- 2002 Mustang GT 5-speed
- North Georgia Auto Forums
#49422 12/11/01 03:47 AM
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0171 Bank 1 lean
0174 Bank 2 lean

Then I got "C1602"


Jeff
1999 Rio Red Cougar
WW body kit and spoiler
Eibach springs
OMP fsb
ST200 rsb and struts
Gutted precats, dual exhaust
#49423 12/11/01 12:54 PM
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Check out this Thread.

Sounds like fuel filter or EGR


- 1996 Mystique Spree 2.0 ATX
- 2002 Mustang GT 5-speed
- North Georgia Auto Forums
#49424 12/13/01 05:39 AM
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I threw in some Techron, reset the ECU, and replaced the fuel filter with the help of a CEG member Brett (thanks if you read this). 63 miles and no CEL. I'm thinking if it stays off within the next 50 miles-I'm good to go. If that's not it-Brett and some ford techs are leaning towards a vacuum leak or a leaky intake gasket. We'll see. Thanks for your help guys. I appreciate it!


Jeff
1999 Rio Red Cougar
WW body kit and spoiler
Eibach springs
OMP fsb
ST200 rsb and struts
Gutted precats, dual exhaust

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