[bigred73]

On my 2001 7.3 when the engine is under load it feels like a bad misfire. I had my buddy pull codes with his Snap-On scanner and it came up with P0476 (EPR failure) and P0605 (internal control module ROM error). Also, it it shooting out white smoke. He thought the Baro was off also, anybody know what it should read in Hz? The truck has a 4" DP and exhaust, and hypertech programmer. Any help would be greatly appreciated.

 

[action4478]

UVCH ...


Have him read the EOT & ICP....

 

[bigred73]

I will have him check those today, just for my info why would a bad UVCH make it run bad, i thought they were for the GP's? Would we basically be looking to see if the pcm is getting a EOT reading and ICP reading or would the ICP reading be fluctuating under load? Thanks for the help

 

[action4478]

[ QUOTE ]
just for my info why would a bad UVCH make it run bad

[/ QUOTE ] They run the injectors also...


[ QUOTE ]
ICP reading

[/ QUOTE ]

The sensor may be bad.... Or the IPR may be sticking..

[ QUOTE ]
EOT reading

[/ QUOTE ]

Is less likely to cause this under load

How old is the oil & is it full?...

 

[bigred73]

Oil is fresh and full, about 600 miles. Truck has 82,000. Hopefully I can get the scanner later today. There is white smoke coming out that smells like raw fuel.

 

[bigred73]

Turns out it was a bad inline fuel pump, truck is back to normal!