About two weeks ago I started having some surging, difficulty starting, difficulty idleling after starting. Often after I started the D, it would stall. So I searched through the threads here and came to the conclusion that my TPS was the culprit. I replaced that and also did a tune up with champion plugs, Autolite advanced wires, and new cap and rotor. I reset the computer and haven't had the problem since.

This morning, I had the problem again. When I start my D, it will do it's normal thing, fuel pump humming, everything works, no codes, i turn it over, it revs up then dies. it tried to idle a few times, got really rough and then died. I'm kinda thinking the camshaft sensor is on its way out. (would explain the rough idleling) but I'm not an expert as I'm a paramedic not a mechanic . So I'm looking to see if anyone has any input on the subject. It would be greatly appreiciated.


It's only done this since the cold weather had started here. It doesn't get very cold here. the first time it did this the morning was in the upper 30's lower 40's. This morning it was 55 out. So I don't know if that plays a part in anything.

 

Try cleaning your throttle body. It might help a bit...

 

Pull the cap to check for condensation. I would also look at the IAT and MAF sensors. I'm not so sure on the CPS being your problem but it's a possibility.

 

Fuel pump! Do a pressure test. Just because it is humming doesn't mean fuel delivery. A new pump flows at 54 psi.

The fuel pump includes the regulator, pump, and filters all on one unit and it is mounted in the tank. About $200 bucks

Have the battery load tested. A bad battery can do this......

 

Is it an easy smeezy job??? I'm mechanically inclined somewhat...... is it just as simple as draining the tank, removing the retainer bolts, pull out the pump disconnect it and then rec onnect it and rebolt it? I'm kinda figuring it was the fuel pump.... God knows everything an thier grandmother has gone wrong on this truck. 255 @ best through discount.

Battery is less then 1 yr old. Throttle body was taken off and cleaned a few weeks ago when I did the tune up.

 

Do a pressure test at the rail before pulling the tank. That would be a bear of a job to not be your issue. There is a cap on the fuel rail on the drivers side to test the pressure.

 

That is true Green.

A new pump runs at 54 psi and I would replace yours if under 50 psi. One thing you can do (but I didn't say this) on the drivers side fuel rail there is a stem with a plastic cap on it. It looks like a tire pressure cap. Even if you just push it to see if there is any pressure behind it (fuel so be careful and watch the eyes) is better than nothing and guessing.

When I did this the fuel just dribbled out hints the replacement of mine. If ya drop the tank be sure to wash it out with some good fuel before re-installation.

It really is not a bear of a job tho.

 

If you have 10+ gallons of fuel in it then it will be. Definitely straightforward though.

 

I finally figured out why my D starting surging...
tried everything else and have the bills to prove it...
it was (drum roll please...) a sticking throttle cable....!!
next time it happens, reach down and yank the trottle pedal up by hand...it could be the cable or the floor mat wedged up against it...

Chris

 

LOL. man sorry to here that