Engine Trouble (fuel issue?)
#1
11-08-2009, 07:27 PM
Engine Trouble (fuel issue?)
Looking for some advice on what might be wrong....here's the scenario:
When I take off from a stop:
The engine/tranny seems to be fine accept for occasional sputter during the acceleration. Not necessarily between gears (AT). Its kindof like the truck acts like I let off the petal and then back on it (when of course the petal remains in the same position)
When I am cruising at 30-40mph:
As if I were about to pass a car, I give the petal a good stomp to get up to speed up and it shifts down to 3rd (or 2nd depending on WOT or not) just fine. The problem lies in complete lack of power. It literally takes 3 or more seconds for the turbo to climb before the truck get moving with increased speed.
When cruising at 50mph:
While in O/D, then I go WOT- it shifts down to 3rd and locks just fine, but no power.-an occasional puttering is heard when I'm next to something that rebounds my exhaust. The day my ALT. blew up was the same day I went WOT from O/D (52mph) and the RPM's went sky high before it shifted into 3rd and then instantly dropped to idle. I let off the petal and returned to a cruise at 50mph. I don't know if that will help but like i said it only happened once, then I replaced my ALT. and it hasn't since.
My main concern with all of this is the occasional puttering during acceleration in the engine and the lack of power. It feels like its starving for fuel or a damaged VP (I've checked my fuel filter&oxy. on the Air Dog and their both clean)
Any ideas?
When I take off from a stop:
The engine/tranny seems to be fine accept for occasional sputter during the acceleration. Not necessarily between gears (AT). Its kindof like the truck acts like I let off the petal and then back on it (when of course the petal remains in the same position)
When I am cruising at 30-40mph:
As if I were about to pass a car, I give the petal a good stomp to get up to speed up and it shifts down to 3rd (or 2nd depending on WOT or not) just fine. The problem lies in complete lack of power. It literally takes 3 or more seconds for the turbo to climb before the truck get moving with increased speed.
When cruising at 50mph:
While in O/D, then I go WOT- it shifts down to 3rd and locks just fine, but no power.-an occasional puttering is heard when I'm next to something that rebounds my exhaust. The day my ALT. blew up was the same day I went WOT from O/D (52mph) and the RPM's went sky high before it shifted into 3rd and then instantly dropped to idle. I let off the petal and returned to a cruise at 50mph. I don't know if that will help but like i said it only happened once, then I replaced my ALT. and it hasn't since.
My main concern with all of this is the occasional puttering during acceleration in the engine and the lack of power. It feels like its starving for fuel or a damaged VP (I've checked my fuel filter&oxy. on the Air Dog and their both clean)
Any ideas?
#2
11-08-2009, 07:37 PM
#3
11-08-2009, 07:45 PM
#4
11-08-2009, 07:52 PM
#5
11-09-2009, 12:19 AM
#6
11-09-2009, 12:07 PM
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1. Get fuel pressure checked.
2. If bad, DO NOT DRIVE.... Replace with Raptor or FASS / AirDog equivalent.
3. Check for codes and report to this forum
4. If you have fuel, your VP is heading south unless you notice the RPM gauge hop up and down when the problem happens. This could be a cam sensor, but I'm not all that confident.
My truck did the same thing on four accounts. All VP failures. They always seem to go out slowly on me....
2. If bad, DO NOT DRIVE.... Replace with Raptor or FASS / AirDog equivalent.
3. Check for codes and report to this forum
4. If you have fuel, your VP is heading south unless you notice the RPM gauge hop up and down when the problem happens. This could be a cam sensor, but I'm not all that confident.
My truck did the same thing on four accounts. All VP failures. They always seem to go out slowly on me....
#8
11-09-2009, 04:43 PM
OK, I just tried the APPS reading/adjustment and had no luck! The instructions I read on here were apparently not for my truck.
can anyone give some advice on the reading/adjustment for my '99?
The #23 pin read .8 volts although I have no way to adjust it- there are 4 small starbit screws holding on the metal plate in which the 3 large wire connectors are plugged into. This metal plate is no removable (sealed on).
I'm at a loss here.
By the way, my Fuel press. gauge hasn't arrived yet....
still waiting!
can anyone give some advice on the reading/adjustment for my '99?
The #23 pin read .8 volts although I have no way to adjust it- there are 4 small starbit screws holding on the metal plate in which the 3 large wire connectors are plugged into. This metal plate is no removable (sealed on).
I'm at a loss here.
By the way, my Fuel press. gauge hasn't arrived yet....
still waiting!
#9
11-09-2009, 07:27 PM
#10
11-09-2009, 07:34 PM
