Originally Posted by kaya@bernhausen
if your fuel heater isn't working correctly, that may have been why it wasn't starting well in the colder weather. but that would be a separate issue
either that, or your injectors are taking a dump
see if you can run a buzz test
Originally Posted by mack82
I have a 99 f450 it has 150,000 miles back in the winter truck lost power and got hard to start when below 35degrees so I put new glow plugs glow plug relay wiring harness and valve covers didnt help the problem at all now the weather is warmer it starts ok but still doesnt have any power i bought a auto enginuity program with ford bundle and here is what codes i got.
P1316 Injector driver module code
P1247 Turbocharger boost pressure low
P1293 Injector high side open bank 1
P0284 Cylinder 8 Injector circuit contribution fault
any help will be apreciated
P1293 sorta tells me that your Bank 1 (Pass side IIRC) connection is no good.
Did you double check your connections or replace the connector and pigtail on the truck side of the UVCH instead of just the part on the VC?