It started a few months ago. If you went to start the motor and did not catch it the first time. (Let go of the key too soon). I had to give it some gas to get it started. Then Give it gas for about a minute before it would idle. After that it would run fine. Now it is to the point that it does this every time you start it up and it has a slight miss. The miss is when I go up the first hill right around the corner from my house after that the truck runs fine. I was going to check the fuel pressure, but in my mind if it was starving for fuel it should be starving all of the time not just at startup.

Any and all advice sugestions welcome
Thanks in advance

 

It could be a fuel pump on its way out. I'd still check the fuel pressure just to make sure.

I'd also check the usual, TPS and MAP sensors, make sure they are working right.

 

Jason, This is my first dodge. Any insite on where the TPS and MAP sensors are on these trucks? Mine is a 1997 360. How do you tell if they are working right? Check for cotoninuity??? Also I haven't checked the fuel pressure yet because I was not sure if there is a test port on these trucks or not. I looked around the fuel rail, but did not see one. THANKS

 

I would say it's that little Gremlin in the back that's probably causing all your troubles. (j/k) There are three sensors around the throttle body on these trucks. MAP sensor, throttle positioning sensor, etc. One of those could be giving your trouble. Check continuity, cleans the contacts, or just swap them out and see the difference.

 

How do you do the fuel pressure check on these trucks and what kind of pressure should I have? Thanks

 

First remove the IAC on back of TB (#25 torx )and clean it and the bore it goes into. Second , get atleast a Haynes manual and a half way decent voltmeter, the manual will tell you how to check all those sensors and how to check the fuel pressure btw, but you obviously need a fuel pressure tester. And lastly, do you have a plastic or steel fuel rail? I don't believe the plastic rail has a test port, which on a steel one is located on the driver side rail. It will have a black plastic cap similar to a tire valve stem.

 

The 5.2's in 1997 had the metal fuel rail. I don't know if they did something different just for the 5.9's that year or not.

 

Just got done yesterday working on a 97 2500 5.9, that had a plastic rail with no test port and it's ridiculous that it doesn't have one.

 

I guess they did it different on the 5.9's that year then.

 

What sucks is, that I have a really nice (expensive)fuel injection pressure test kit that has all these adapters, special GM adapters, Fords, Volvo for goodness sake, but not the one needed to to check a freakin Chrysler product without a port. Ridiculous, but I ordered the adapter and it's on it's way.