Around the middle of this webpage you'll find the instructions on how to jump the VP which will let you know if its at least functioning. VP44 Diagnostic

Bluechip is a good VP source but they're the most expensive too. Ol' Chip who used to run that place was quite knowledgeable about the VP and contributed to a lot of its upgrading. That said, they need to update their website because some of the information is a little conflicting of what we (and they) have learned over the years. But nonetheless, its still a good source of info.

Here's a list of companies who not only sell but rebuild the VP. Of that list, I've only heard good things about Industrial Injection. Mopar1973Man's Dodge Cummins Articles - Bosch Certified VP44 Injection Pump Rebuilders

 

Wow, that's quite a list. Reading the other symptoms I've seen before it died, I got the bad feeling the pump is DOA.

 

Cougar, any update on this?
Thanks.

 

Replaced the Injection pump. Had some anomalies that cleared up later. It's running fine now.

 

Thanks!