2000 Ranger p0171 and p0455 (pending) - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 06-03-2014
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Location: Concord, New Hampshire
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Icon4 2000 Ranger p0171 and p0455 (pending)

Hello,

I'm having an issue with my 2000 ford ranger.
The check engine light is on and it is currently throwing the p0171 code (bank 1 too lean).

It currently also has a p0455 code pending and it is difficult to fill at the gas station. In order to get the fuel in the tank I have to pump it very slow.

I just replaced the alternator and cleaned the MAF sensor while I was in there, I did notice some corrosion around the MAF sensor when I removed it from the intake.

It also seems to be idling strangely with the rpms continually going up and down.

Any help would be appreciated.
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  #2  
Old 07-21-2014
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Join Date: Jul 2014
Location: Las Vegas
Posts: 2
I have been having this same issue on my 97 Ranger. I got code P0171 and code P0174. I disconnected the MAF sensor and it immediately ran perfect so I replaced it with a new one and it still idles like crap.
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Old 11-06-2014
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Join Date: Nov 2014
Location: Panama City
Posts: 1
P0171 bank too lean

Quote:
Originally Posted by mikeyg6754 View Post
Hello,

I'm having an issue with my 2000 ford ranger.
The check engine light is on and it is currently throwing the p0171 code (bank 1 too lean).

It currently also has a p0455 code pending and it is difficult to fill at the gas station. In order to get the fuel in the tank I have to pump it very slow.

I just replaced the alternator and cleaned the MAF sensor while I was in there, I did notice some corrosion around the MAF sensor when I removed it from the intake.

It also seems to be idling strangely with the rpms continually going up and down.

Any help would be appreciated.
Replace the MAFS mine was doing same exact thing I cleaned it first and it rough idled. I replaced and she purrs! As far as 455 I have the same trouble and haven't figured it out yet. I may replace the charcoal canister on Saturday. I let u know what the outcome is.
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