blshoe
01-12-2006, 20:29
Hello all,
Im having a stalling problem with my truck only when cold, below 40 deg. Let me give you a little history on this truck. I have owned it for a year and 4 mounts, I got down in Texas. It's a 1998 K3500 crew cab long bed 136,000 miles singel rear wheel. The first stalling problem I found was the engine harness had rubbed through and was grounding out on the high pressure A/C line, right where it comes out of thr fire wall, passanger side. But when it got cold last winter, when you key up glow plug light comes on like it should, and you can hear the lift pump working, starts right up and then stall's after about 5 min, or I'll get about 3 milles away. When you go to restart there is no glow plug cycle and no fuel pump cycle. I would have to wait anywhere between 5 min to 40 min and then I get the glow plug and fuel pump cycle and the it start right up, a little loud a first ( 2 sec ) and then sounds normal. Then the PCM failed, replaced it with a new GM PCM. But I was still having stalling problems only when cold out. I have been reading this form for a while and getting some great pointers what to look for. I did find some weak pins for thr ECM-1 and ECM-B min fuse in the under hood relay/fues box, I also found weak pins on the relays, fuel pump/starter. I went through and replaced all of the pins with new packerd pins. I also replaced the glow plug controler,both negative battery cables,and both battery's and alt,and the ground ring terminals on the back of the passanger side head. I also replaced the Ignition switch, Still the same thing stalling when cold. When spring came the stalling went away. Now I got a check engine light for the optical/fuel temperature sensor, but no stalling since it has been warm. Now that it is winter, started stalling again after cold start's. So I through the book at it, New Injection pump (not rebuilt) New FSD on a coller from SS/diesel with ext harness,had injectors tested,new glow plug harness,glow plugs,injection pump harness,timing chain set, crank sensor,coolant temp sensor,map sensor,aircharge temp sensor,boost solenoid,lift pump,fuel filter,injector return lines.I also changed all the pins on the PCM, some of them had weak pins. Got the truck up and runing, no problems. one week went by and guess what, started it up one morning and it stalled after about 5 min of rining. went to restart and the glow plug cycle was working and it started right up. It has done this a couple of other times to, and has restarted. A couple of days ago I went to leave work and about 5 miles away while driving it stalled. Pulled over and tryed to start but again, no glow plug cycle, I sat for about 20min and finally the glow plug cycle came on and it started right up. I am sorry for the long post but Im trying to give you guys as much details as posable on this little DEVIL in my truck, THIS THING IS KILLING ME. Thank you for any Input on this,
Randy.
Im having a stalling problem with my truck only when cold, below 40 deg. Let me give you a little history on this truck. I have owned it for a year and 4 mounts, I got down in Texas. It's a 1998 K3500 crew cab long bed 136,000 miles singel rear wheel. The first stalling problem I found was the engine harness had rubbed through and was grounding out on the high pressure A/C line, right where it comes out of thr fire wall, passanger side. But when it got cold last winter, when you key up glow plug light comes on like it should, and you can hear the lift pump working, starts right up and then stall's after about 5 min, or I'll get about 3 milles away. When you go to restart there is no glow plug cycle and no fuel pump cycle. I would have to wait anywhere between 5 min to 40 min and then I get the glow plug and fuel pump cycle and the it start right up, a little loud a first ( 2 sec ) and then sounds normal. Then the PCM failed, replaced it with a new GM PCM. But I was still having stalling problems only when cold out. I have been reading this form for a while and getting some great pointers what to look for. I did find some weak pins for thr ECM-1 and ECM-B min fuse in the under hood relay/fues box, I also found weak pins on the relays, fuel pump/starter. I went through and replaced all of the pins with new packerd pins. I also replaced the glow plug controler,both negative battery cables,and both battery's and alt,and the ground ring terminals on the back of the passanger side head. I also replaced the Ignition switch, Still the same thing stalling when cold. When spring came the stalling went away. Now I got a check engine light for the optical/fuel temperature sensor, but no stalling since it has been warm. Now that it is winter, started stalling again after cold start's. So I through the book at it, New Injection pump (not rebuilt) New FSD on a coller from SS/diesel with ext harness,had injectors tested,new glow plug harness,glow plugs,injection pump harness,timing chain set, crank sensor,coolant temp sensor,map sensor,aircharge temp sensor,boost solenoid,lift pump,fuel filter,injector return lines.I also changed all the pins on the PCM, some of them had weak pins. Got the truck up and runing, no problems. one week went by and guess what, started it up one morning and it stalled after about 5 min of rining. went to restart and the glow plug cycle was working and it started right up. It has done this a couple of other times to, and has restarted. A couple of days ago I went to leave work and about 5 miles away while driving it stalled. Pulled over and tryed to start but again, no glow plug cycle, I sat for about 20min and finally the glow plug cycle came on and it started right up. I am sorry for the long post but Im trying to give you guys as much details as posable on this little DEVIL in my truck, THIS THING IS KILLING ME. Thank you for any Input on this,
Randy.