i have a 91 first gen 5.9 turbo diesel i just had the fuel pump pulled and rebuilt and put back on and now when i take off in second gear i have really low oil pressure and rpm almost to the point of the truck conking out on me any suggestions whats the problem

 

Mine the oil pressure gauge would drop all the way down when i woudl accelerate but come back up when driving steady. It was a bad sending unit and eventually just stopped working all together.

 

Sounds like the idle speed is too low.

 

Take the truck to the shop and have them adjust the idle back up.

Otherwise you can do it yourself.
There's a threaded screw, with a screwdriver slot on it, which is on the backside of the pump, towards the head.
This screw is held in place with a 10mm locknut, but sometimes you can't get a wrench to work on it and you have to pop the nut loose with a small chisel, then adjust the idle screw up.

It can be a bear to get at, so have patience.

Mark.

 

Hey thanks guys this forum is a huge help And I enjoy talking about the diesel trucks we love thanks guys so does anyone know a good website to buy 1st gen diesel aftermarket parts?

 

of course I/we have a small fleet of them

Denny-T Performance and I are just about the only guys that do 90% 1st gen


BBD Performance - Your Diesel Performance Parts Professional

http://www.dennytperformance.com/

 

^ if all else fails go to bbd

 

what ever works

 

Just be careful with BBD, that guy has been known to find and get me a damn good deal

 

how much did he pay u to say that ha ha just kiddin im gettin off topic again