tchappell
06-23-2005, 09:44 PM
Fuel pumps, are they only available at the dealer? $865 seems outragious. I don't have the service manual yet.....should I wait on it before tackling the job myself?
The dealer's diesel mechanic and a GM tech on a conference call confirmed that the fuel pump needed to be replaced.
Here's what wrong: After the engine has run for 5 or 10 minutes, the engine will not restart. After it has cooled down below 170 (anywhere from 45mins to 2 hrs), it will restart or I can restart it immediately by priming the pump. In the morning when the WTS light is present, the engine starts immediately. The mechanic says the seals in the pump are not functioning properly when hot. The only time I have a problem with engine performance is when I'm in Tow/Haul and reach OverDrive (or whatever gear it is) at a speed around 60 or 65 (can't remember exactly) and at about 2500 or 2600 rpms. I then get a SES light with a code 93 (large fuel leak) and the computer puts the engine in a limp mode. The mechanic says that makes sense since the pump is not able to put out enough fuel/pressure as what the computer is calling for at that rpm. I can then take it out or Tow/Haul which allows the transmission to shift at rpms below 2000 and make it to where I'm going without incident. This has happened the 2 times I have towed something. The two trailers I towed eached weighed around 6000 #'s and not the reason I bought this truck. I bought the truck to tow 12,500 #'s more easily than what my 1986 E150 with a 302 could do. It was able to do it, but it's tired. BTW, I made major changes to the E150 so that it could handle the job.
Any answers to any of what I've posted would be appreciated.
Tom
The dealer's diesel mechanic and a GM tech on a conference call confirmed that the fuel pump needed to be replaced.
Here's what wrong: After the engine has run for 5 or 10 minutes, the engine will not restart. After it has cooled down below 170 (anywhere from 45mins to 2 hrs), it will restart or I can restart it immediately by priming the pump. In the morning when the WTS light is present, the engine starts immediately. The mechanic says the seals in the pump are not functioning properly when hot. The only time I have a problem with engine performance is when I'm in Tow/Haul and reach OverDrive (or whatever gear it is) at a speed around 60 or 65 (can't remember exactly) and at about 2500 or 2600 rpms. I then get a SES light with a code 93 (large fuel leak) and the computer puts the engine in a limp mode. The mechanic says that makes sense since the pump is not able to put out enough fuel/pressure as what the computer is calling for at that rpm. I can then take it out or Tow/Haul which allows the transmission to shift at rpms below 2000 and make it to where I'm going without incident. This has happened the 2 times I have towed something. The two trailers I towed eached weighed around 6000 #'s and not the reason I bought this truck. I bought the truck to tow 12,500 #'s more easily than what my 1986 E150 with a 302 could do. It was able to do it, but it's tired. BTW, I made major changes to the E150 so that it could handle the job.
Any answers to any of what I've posted would be appreciated.
Tom