Question about 1999 Ford F350 Regular Cab

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I have a 99 Ford F550 7.3 Powerstroke RollBack which is experiencing turbo problems. It has loss of power and black smoke after 20 minutes of run time. Engine up to full operating temperature. It had code PO471, P1212. Cleared codes, cleaned exhaust back pressure sensor out - was plugged off with carbon deposits. Test drove truck - has more loss of power now - also has new code of PO1238 - other codes stayed cleared out. Thanks for any input you can give me. WillyP

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P1212 -ICP voltage not at expected level

P01238 is not a code, too many numbers, if it is p1283 then it is an IPR circuit failure.

The IPR is probably your problem, even with a non working backpressure sensor your truck should run fine. I isn't needed except for the EBPV to operate during warm-ups.

Replace your IPR (injection pressure regulator)

Posted on Oct 01, 2009

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