P1271-8 codes - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 03-22-2017, 01:45 AM Thread Starter
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P1271-8 codes

Just did a buzz test with my phone and the car gauge pro app. Buzz test sounded good but then got the p127 codes on all 8 cylinders? Truck runs decent when warm. It does have a miss when cold but goes away. Is something crazy wrong??

96 f250

96 F-250 4x4 Crew Cab
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post #2 of 5 (permalink) Old 03-22-2017, 03:01 AM
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Re: P1271-8 codes

In case you are so inclined, here are the pinpoint tests for the P127x DTCs. It will at least let you know where to start looking if you study them. Cheers!
Attached Files
File Type: pdf AB Tests Introduction.pdf (661.0 KB, 4 views)
File Type: pdf AB11 thru AB15.pdf (312.4 KB, 2 views)
File Type: pdf AB23.pdf (281.4 KB, 0 views)

97 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, Ext Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD: 94 F350 CC DRW PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, 3 DP, Bilsteins, $12 AIC, Coolant Filter, Explorer O/H Console, Trans Temp, Boost, and Pyro, Pedestal Mod, Gutted EBPV
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post #3 of 5 (permalink) Old 03-22-2017, 03:09 AM Thread Starter
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Re: P1271-8 codes

Quote:
Originally Posted by Patrick Feeley View Post
In case you are so inclined, here are the pinpoint tests for the P127x DTCs. It will at least let you know where to start looking if you study them. Cheers!
Thank you for the info. Are the AA and AB injectors fairly similar? I was really hoping that the reader couldn't really read the injectors and just threw a code.

96 F-250 4x4 Crew Cab
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post #4 of 5 (permalink) Old 03-23-2017, 02:12 AM
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Re: P1271-8 codes

For a buzz test, the reader won't care whether the injectors are AA or AB as the solenoids are the same. You should have AA injectors unless you have a late-96 Cali truck. Cheers!

97 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, Ext Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD: 94 F350 CC DRW PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, 3 DP, Bilsteins, $12 AIC, Coolant Filter, Explorer O/H Console, Trans Temp, Boost, and Pyro, Pedestal Mod, Gutted EBPV
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post #5 of 5 (permalink) Old 03-23-2017, 02:18 AM Thread Starter
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Re: P1271-8 codes

Yep AA they are. Just the codes are concerning since it was all 8. Hoping it was just the reader not the injectors.

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