I started a Thread back in Sept 2012 titled "Transmission or Torque Converter?" that I'd like to refer you to for the history. My problem was resolved and now it's back.
The Short Story is that I have no power. I changed my fuel filter back then and all my problems went away. My truck sits a lot. I only put 800 miles on it since then. I let my fuel tank get low (the dummy light came on), and all my problems resurfaced. I assumed that I must have sucked some sludge or something into the fuel lines, so I changed the oil, oil filter, and fuel filter again, but that did not fix my problem.
I ran AE, monitoring ICP, ICP Duty Cycle, EOT, Engine RPM, Calculated Engine Load, and a slew of other things. Basically, the ICP is around 700 something psi at idle, and around 2200 at WOT. ICP duty cycle is around 7% at idle and around 35% at WOT. At WOT, it takes me roughly 1/4 mile to get up to about 45mph, and I can't get above 50 no matter what, even on level road. RPMs are consistent with speed, in that it takes forever to get them up. Calculated Engine Load reads 0% all the time. Does my truck not have the capability to monitor this with AE? EOT is around 150F.
I disconnected the fuel line where it goes into the fuel pump, and the fuel comes out clean and steady. I reconnected that, and then I drained the fuel bowl, and it also appears clean. The pump works. The bowl fills back up with no problem, and when I open the drain valve and key on, I get a good healthy stream of fuel into my drip bucket.
Based on all I've read on these forums, my next step would be to check my fuel pressure. I know where the ports are on the back of the fuel bowl, both pre-filter and post-filter. I bought a fuel pressure gauge from NAPA, and when I got home and opened it, the instructions say not suitable for diesel fuel. I didn't realize that I need a special gauge. Can someone point me to a good one, and maybe some additional troubleshooting steps?
I was thinking of getting the o-ring kit and the FPR kit from dieselorings.com. Should I get these and change all the o-rings? Should I check pressure first? What can I learn by checking pressure at both ports? I'm wondering if perhaps I have a clogged fuel return line...
Thanks for all your help.
The Short Story is that I have no power. I changed my fuel filter back then and all my problems went away. My truck sits a lot. I only put 800 miles on it since then. I let my fuel tank get low (the dummy light came on), and all my problems resurfaced. I assumed that I must have sucked some sludge or something into the fuel lines, so I changed the oil, oil filter, and fuel filter again, but that did not fix my problem.
I ran AE, monitoring ICP, ICP Duty Cycle, EOT, Engine RPM, Calculated Engine Load, and a slew of other things. Basically, the ICP is around 700 something psi at idle, and around 2200 at WOT. ICP duty cycle is around 7% at idle and around 35% at WOT. At WOT, it takes me roughly 1/4 mile to get up to about 45mph, and I can't get above 50 no matter what, even on level road. RPMs are consistent with speed, in that it takes forever to get them up. Calculated Engine Load reads 0% all the time. Does my truck not have the capability to monitor this with AE? EOT is around 150F.
I disconnected the fuel line where it goes into the fuel pump, and the fuel comes out clean and steady. I reconnected that, and then I drained the fuel bowl, and it also appears clean. The pump works. The bowl fills back up with no problem, and when I open the drain valve and key on, I get a good healthy stream of fuel into my drip bucket.
Based on all I've read on these forums, my next step would be to check my fuel pressure. I know where the ports are on the back of the fuel bowl, both pre-filter and post-filter. I bought a fuel pressure gauge from NAPA, and when I got home and opened it, the instructions say not suitable for diesel fuel. I didn't realize that I need a special gauge. Can someone point me to a good one, and maybe some additional troubleshooting steps?
I was thinking of getting the o-ring kit and the FPR kit from dieselorings.com. Should I get these and change all the o-rings? Should I check pressure first? What can I learn by checking pressure at both ports? I'm wondering if perhaps I have a clogged fuel return line...
Thanks for all your help.