TurboDiverArt
04-28-2013, 05:27
Hi all,
After having a relatively trouble free 250,000 miles my 1999 Surburban 6.5TD began to develop a stumble when first started until it warmed up. Would not do it all the time, just sometimes. Sounds like it just doesn’t get fuel for a fraction of a second then it’s fine. Occasionally it would stall but always started right back up. Never happened once it’s warmed up and ran like a champ. Went to start it this morning to tow to the track but it won’t start at all. Just cranks, not even a hint of wanting to start at all. I changed out injectors and glows last year and truck had been running great. I would have thought the PMD but doesn’t that usually fail when hot? I have mine mounted on a remote cooler. I have a spare but the pin outs on the replacement seem to be different than my factory one (have to contact the vendor I bought it from). My brand new spare has all 7 pins in it, my factory wire harness has one pin and 6 holes and mates perfectly with my remote PMD wiring harness. I guess I could try to connect the factory wire harness to the factory PMD that’s still on the pump. It’s difficult to get to my remote PMD harness but I may try that next.
Anyway, I’m wondering if maybe it’s the solenoid on top of the injector pump? I assume this is the mechanical solenoid that the PMD controls? Cylindrical and pointing straight up in the air with what appears to be a nut on the top. I think the rectangular thing sitting on its side next to it is the shut off solenoid? Could that be bad?
After trying and cranking for a while I do not smell any diesel in the exhaust pipe so I’m pretty sure its not getting fuel.
After having a relatively trouble free 250,000 miles my 1999 Surburban 6.5TD began to develop a stumble when first started until it warmed up. Would not do it all the time, just sometimes. Sounds like it just doesn’t get fuel for a fraction of a second then it’s fine. Occasionally it would stall but always started right back up. Never happened once it’s warmed up and ran like a champ. Went to start it this morning to tow to the track but it won’t start at all. Just cranks, not even a hint of wanting to start at all. I changed out injectors and glows last year and truck had been running great. I would have thought the PMD but doesn’t that usually fail when hot? I have mine mounted on a remote cooler. I have a spare but the pin outs on the replacement seem to be different than my factory one (have to contact the vendor I bought it from). My brand new spare has all 7 pins in it, my factory wire harness has one pin and 6 holes and mates perfectly with my remote PMD wiring harness. I guess I could try to connect the factory wire harness to the factory PMD that’s still on the pump. It’s difficult to get to my remote PMD harness but I may try that next.
Anyway, I’m wondering if maybe it’s the solenoid on top of the injector pump? I assume this is the mechanical solenoid that the PMD controls? Cylindrical and pointing straight up in the air with what appears to be a nut on the top. I think the rectangular thing sitting on its side next to it is the shut off solenoid? Could that be bad?
After trying and cranking for a while I do not smell any diesel in the exhaust pipe so I’m pretty sure its not getting fuel.