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system adaptive fuel too lean

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Old 12-07-2003, 03:02 PM   #1
jay2082
Biloxi, MS
1999 XLT 4.0 SOHC
 
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(Original Poster)
Exclamation system adaptive fuel too lean

I plugged in a scanner into my PCM in my 1999 ford explorer 4.0 SOHC, and got the following two codes PO171, and PO174 "System Adaptive fuel too lean" Bank1 & Bank 2.

If there is any info that you guys could give me I would greatly appreciate it. Thanks
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Old 12-07-2003, 03:48 PM   #2
Billy177
Redding CT
99 Explorer XLT SOHC 4x4
 
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yea it is your lower intake manifold gaskets get them fixed along with your timing chain tensioners for free under recall




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1999 4.0 Sohc XLT 4x4 3.55 31' BFG MT
Mac Air Intake, High-Flow cats, Excalibrator
Flowmaster 50 Series Cat-back,Rancho 5000's,
TT + Shackles, 200 Amp Alternator,
Autometer Gauges, 150 Watt Lights
Detroit Locker in Rear
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Old 12-07-2003, 06:49 PM   #3
Billy177
Redding CT
99 Explorer XLT SOHC 4x4
 
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well there is a service because i had this done on mine it is free until 70 or 80 thousand miles. i am not sure if it is a bonafied recall or not but i think it is a service bullitin in that they will only fix it if you have the prolblem instead of doing everyones if you call the ford dealer i am sure that they would get you taken care of




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1999 4.0 Sohc XLT 4x4 3.55 31' BFG MT
Mac Air Intake, High-Flow cats, Excalibrator
Flowmaster 50 Series Cat-back,Rancho 5000's,
TT + Shackles, 200 Amp Alternator,
Autometer Gauges, 150 Watt Lights
Detroit Locker in Rear
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Old 12-08-2003, 06:42 AM   #4
Billy177
Redding CT
99 Explorer XLT SOHC 4x4
 
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this is it from another post http://www.explorerforum.com/forums/...threadid=93798




__________________
1999 4.0 Sohc XLT 4x4 3.55 31' BFG MT
Mac Air Intake, High-Flow cats, Excalibrator
Flowmaster 50 Series Cat-back,Rancho 5000's,
TT + Shackles, 200 Amp Alternator,
Autometer Gauges, 150 Watt Lights
Detroit Locker in Rear
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