GertrudeThe973500
Newbie
Posts: 2
Age: 27
Loc: Chilliwack, BC
Reg: 11-26-24
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 11-26-24 02:02 PM - Post#2875928
Hey, I know there are lots of threads related to rough idle or PDM issues. However, I recently purchased a 97 K3500 which began having stalling issues.
I purchased a relocation kit with a new PDM from A-Premium.
Got it installed last night and today the truck has stalled twice, both times have been at idle. First time was when I first started the truck to let it war up, probably about 5-8 minutes of Idle, then it fizzled out and stalled. Took about 5 minutes before I was able to get the truck to start again.
Second time was after driving around the block, probably less than 5 minutes of driving, had to run back into my house to grab something and it stalled while I was inside. Probably only about a minute or 2 of idle and again 4-5 minutes before it started again.
Any idea what else could be causing this issue?
Thanks in advance!
1997 Chevrolet K3500 Silverado DRW 4X4
6.5L Detroit Diesel
Automatic Transmission |
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 someotherguy
Senior Moderator
Posts: 29818
Loc: Texas
Reg: 08-01-03
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11-27-24 06:40 AM - Post#2875938
In response to GertrudeThe973500
Welcome,
I assume you mean the PMD. I'm not a diesel guy but this sounds like the lift pump; have you determined that it's operating correctly?
Richard
| 06 Silverado ISS / 06 Silverado SS / 06 300C SRT8 / 93 C3500 dually |
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GertrudeThe973500
Newbie
Posts: 2
Age: 27
Loc: Chilliwack, BC
Reg: 11-26-24
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11-28-24 10:08 AM - Post#2875979
In response to someotherguy
Hey, thanks for the info. Please excuse my complete lack of knowledge. I am learning as I go here. It's my first Diesel and really the first vehicle I am going to be working on mechanically. I've done breaks on other vehicles but that is about the extent of it. That said.
How would I go about confirming proper operation of the lift pump?
TIA
1997 Chevrolet K3500 Silverado DRW 4X4
6.5L Detroit Diesel
Automatic Transmission |
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 stumppuller
"14th Year" Gold Supporting Member
Posts: 966
Loc: Canada
Reg: 11-01-04
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11-30-24 01:20 PM - Post#2876032
In response to GertrudeThe973500
I'm not a diesel guy either, but here's the procedure for a lift pump pressure check for a 94 (non Turbo).
1) Install a tee adapter between the lift pump outlet fitting and outlet pipe.
2) Connect a pressure gauge with dial indication of 0-15 psi to the tee adapter.
3) Run engine and measure fuel pressure.
- If pressure is 5.8 to 8.7 psi, go to step 4
- If pressure is less than 5.8 psi, replace the lift pump and recheck pressure.
4) Remove tee adapter.
5) Reconnect everything, Run engine and check for leaks.
I'll add to the above, the lift pump is electrically powered. So if the pressure is low or zero, first check for proper voltage.
-91 Sierra C2500, now K2500
-81 Chev K20 |
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