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NY GTX
PostPosted: Thu Aug 14, 2008 12:32 pm 
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I dont know how useful this scan is, its from my newly acquired Autotap without the enhanced functions so Im kind of limited in what I can do until I get that upgrade.
Anyways, I replaced the MAF with another one that I had, and Im still getting this code. The car does have an o2 sim in place of the rear-most o2 sensor, would that be causing this code to come up? Or do I have a failing front o2 sensor?
Here is a link to the scan, and also the "freezeframe" from the Autotap showing the code. Would replacing the front-most o2 sensor take care of this? Or is the o2 sim to blame?

Also, anyone see anything blatantly wrong by looking at the scan? I just bought the car mind you and havent had a chance to do anything too involved yet. Car only has a HAI and exhaust. I really have no idea where anything should be stock, such as timing, fuel trims, o2 levels, ect. Any input would be appreciated, thanks!

http://www.scandepot.net/viewscan.php?pk=5276
http://www.scandepot.net/viewscan.php?pk=5275
http://www.scandepot.net/viewscan.php?pk=5273


Quote:
AutoTap Diagnostic - Version 3.10
Date: 8/12/2008 11:41:59 AM
Hardware Serial: 0015310033

Check Engine Light: ON

Confirmed Diagnostic Trouble Codes:
Code: Description:
P0171 Fuel Trim System Lean Bank 1

--------: EMISSION TEST STATUS :--------
Emission Status: Fail
Vehicle Model Year: 1998

OBD Compliant: Yes
Misfire Monitoring: Complete
Heated Catalyst Monitoring: NotSupported
Comprehensive Component Monitoring: Complete
Catalyst Monitoring: Incomplete
Fuel System Monitoring: Complete
Evaporative System Monitoring: Complete
Secondary Air System Monitoring: NotSupported
EGR System Monitoring: Complete
Oxygen Sensor Monitoring: Incomplete
Oxygen Sensor Heater Monitoring: Complete
A/C System Refrigerant Monitoring: NotSupported

--------: FREEZE FRAME DATA :--------
Generated by DTC code: P0171

Fuel System Status Bank 1: CL-1
Calculated Engine Load: 2.4 %
Engine Coolant Temperature: 104
Short Term Fuel Trim Bank 1: 10.2 %
Long Term Fuel Trim Bank 1: 16.4 %
Manifold Absolute Pressure (MAP): 10.9 in Hg
Engine Speed: 947 RPM
Vehicle Speed: 0 MPH
Mass Air Flow Rate: 0.896 lb/min
Throttle Position Angle: 0.4 %

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13.05@107 1.98 60'
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SleeperSE
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PostPosted: Thu Aug 14, 2008 1:49 pm 
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thats one of the 02 sensors change them both and re scan and it should be gone

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GT7
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PostPosted: Thu Aug 14, 2008 7:47 pm 
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Hey check this clip out ... it may help
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VinnieGTP
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PostPosted: Thu Aug 14, 2008 8:26 pm 
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Its a lean code. It could ba a vacume leak. Its cheaper to troubleshoot that then replace an O2. Whats the mileage on the car? If its over 50 and deffinitly if it's over 75K replace it anyway.

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NY GTX
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PostPosted: Fri Aug 15, 2008 1:03 pm 
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Motor has 70-80k on it from what Ive been told. Im going to do the o2 sensor tomorrow and see what it does.

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VinnieGTP
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PostPosted: Fri Aug 15, 2008 1:12 pm 
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DO NOT BUY A BOSCH! AC-Delco or Denso. www.rockauto.com for the denso. It what most of us run.

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NY GTX
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PostPosted: Sun Aug 17, 2008 8:54 pm 
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I bought a Bosch yesterday, didnt even see this post. Any reason to stay away from it? Whats odd is after I installed it, the p0171 went away but now Im getting p0141. No idea WTF is up with that. I have an o2 eliminator that doesnt appear to be giving a reason to throw. Its giving the same voltage as it was before. Maybe I'll take the Bosch back and see if I can get something else.

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z3r0
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PostPosted: Sun Aug 17, 2008 8:55 pm 
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because the bosch has no quality

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