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6.0 starts but dies; need sanity check
I was able to get a ton of great info from other posts / answers, so first off, big thanks to everyone who spends time on here, helping others.
My situation: 2004 F350, dually, 6.0. Ford installed a new long block at 99k miles (warranty), I installed a new FICM at 119k miles. The crank shaft speed sensor, and the ICP sensor, were replaced at 121k miles. The PCM and the FICM have whatever Ford considers the latest programs. I am told this is the "late-2004" block style, e.g., the ICP is not buried by the exhaust headers.
The truck was running quite well; just drove it from Colorado to Texas, no problems. Went out a recent morning, started the truck, and literally could not get out of the driveway. No response at all when the accelerator was pressed. Managed to get the truck back into its parking spot.
Read through these forums, and did the following:
1) replaced both fuel filters
2) tested output voltage on the FICM - measured 48.5V.
In the end, had it towed to a local Ford dealer.
This is where I need a sanity check. Their analysis is that the fuel pump is going bad. Because of the lack of fuel, one of the injectors stayed open, and thus allowed exhaust gases to flow across the other 3 injectors on that bank. Their recommended solution: replace all 4 injectors, replace the fuel pump, flush the injectors, change the oil and filters. $2700.
Does this analysis make sense? One of the regular themes on these forums is that some shops have a tendency to just throw parts at the 6.0.
All comments welcome. I have most likely forgotten to include some important information, so my apologies in advance.