Was losing power and now it's ok, i'm confused

[bakes]

For about a month roughly My truck seamed to be down on power (running at what would feel like stock levels) and i was losing 5mpg NO codes and and boost was the same 24-28 psi . and the sensor data looked OK . Then yesterday morning when towing my 5ft wheel pulling a long steep grade half way up it was like some flipped a switch and the stump pulling power was there again and my Mpg came back .

Has anyone had something like this happen to there truck and found some thing as a cause.

[Aries_Turbo]

clogged something or other?

[shackwrrr]

only thing I coul think of that wouldnt change any sensor data or boost might be a bad stator in the torque converter not giving you the ~2:1 torque multiplication that it should.

[bakes]

only thing I coul think of that wouldnt change any sensor data or boost might be a bad stator in the torque converter not giving you the ~2:1 torque multiplication that it should.

that would hold true to me too but it was there in lock up to.

[boost geek]

Maybe you need new spark plugs.

[Evilancer]

What kind of lift pump do you have on it?

[RoadWarrior222]

clogged something or other?

Yeah sounds a bit like gummy/dirty injectors, get it hot, work it hard and it cleaned up.

[bakes]

What kind of lift pump do you have on it?

factory in tank

---------- Post added at 08:08 PM ---------- Previous post was at 08:02 PM ----------

But wouldn't a faulty lift pump give hard starting which i didn't have?

Im doubting dirty injectors as getting even one out of wack would set a imbalace code and power was still smooth form idle to redline pluss no smoking ever.

[RoadWarrior222]

Unless it was some varnishy/waxy fuel that built up a coat in them more or less evenly... as opposed to a lump or grit.

[bakes]

Unless it was some varnishy/waxy fuel that built up a coat in them more or less evenly... as opposed to a lump or grit.

but like i said it was like a flick of the switch the power came back not 1 cylinder at a time.

and i notice on the hiway the exhuast is a lot quieter then normal now . ( have 4" turbo to tail no mufflers)

[shackwrrr]

but like i said it was like a flick of the switch the power came back not 1 cylinder at a time.

and i notice on the hiway the exhuast is a lot quieter then normal now . ( have 4" turbo to tail no mufflers)

hanging wastegate. When extra turbo lag always feels like an overall power loss to me even though up top it still has the same amount of boost.

[bakes]

hanging waste gate. When extra turbo lag always feels like an overall power loss to me even though up top it still has the same amount of boost.

Hmmmmmmmm

but if i was Pulling 22psi full throttle and was running out of steam pulling the 5th up step grade having to find 2nd

now im pulling 18-22 same grade and weight and now half throttle 4th gear

[shackwrrr]

Hmm, well Im trying to think of stuff that would make it louder and wastegate is the big one. Less fuel might make it louder but Im not sure.

[bakes]

Fuel injection timing ??? the banks 6 gun plugs in between the crank and cam sensor.

---------- Post added at 09:59 PM ---------- Previous post was at 09:57 PM ----------

Hmm, well Im trying to think of stuff that would make it louder and waste gate is the big one. Less fuel might make it louder but Im not sure.

no i agree with you

i just add for those who don't know my set up
1. Banks 6 with pda
2. cold air intake
3. 4" dyno max turbo back (no mufflers)
4 grainer valve set to 35 psi ( but has been removed just at the begging of this problem back to stock)
5 and my Cold air rad guards remove for summer

[shackwrrr]

Fuel injection timing ??? the banks 5 gun plugs in betweeten the crank and cam sensor.

---------- Post added at 09:59 PM ---------- Previous post was at 09:57 PM ----------



no i agree with you

Could it be that the banks wasn't working right for a while? Like it wasn't getting a good connection somewhere?

[boost geek]

Maybe you had it on the "slow mofo" setting.

[bakes]

Maybe you had it on the "slow mofo" setting.

i usually run on setting 5 and only use level 6 or speed loader for when im feelling knotty

[RoadWarrior222]

Maybe you blew out the taters someone rammed in yer pipes.

[Evilancer]

factory in tank

---------- Post added at 08:08 PM ---------- Previous post was at 08:02 PM ----------

But wouldn't a faulty lift pump give hard starting which i didn't have?

Im doubting dirty injectors as getting even one out of wack would set a imbalace code and power was still smooth form idle to redline pluss no smoking ever.

A lift pump won't always cause hard starting, it doesn't take much fuel for it to start up and idle, as opposed to hauling a load with a programmer turned up, fuel demand is high then. To put it bluntly, the factory lift pumps were garbage to say the least.
I would STRONGLY suggest you look into adding an aftermarket pump such as an Airdog or a FASS. The 2 benefits are: 1- You know you arent going to starve the pump of fuel. 2- The added filtration they have is IMO a MUST on a common rail. The factory Dodge fuel filter is inadequate, and with the high injection pressures they run, any particle of foreign material or water will damage the tip of the injector.

I would also rule out an injector problem. If you say it starts and runs nice other than the lower than usual power output then they are more than likely ok. You know it when a common rail has an injector problem, they will smoke and idle rough as hell on a startup, your wallet will also know when you have to go to replace them!

Jon

[bakes]

A lift pump won't always cause hard starting, it doesn't take much fuel for it to start up and idle, as opposed to hauling a load with a programmer turned up, fuel demand is high then. To put it bluntly, the factory lift pumps were garbage to say the least.
I would STRONGLY suggest you look into adding an aftermarket pump such as an Airdog or a FASS. The 2 benefits are: 1- You know you aren't going to starve the pump of fuel. 2- The added filtration they have is IMO a MUST on a common rail. The factory Dodge fuel filter is inadequate, and with the high injection pressures they run, any particle of foreign material or water will damage the tip of the injector.

I would also rule out an injector problem. If you say it starts and runs nice other than the lower than usual power output then they are more than likely OK. You know it when a common rail has an injector problem, they will smoke and idle rough as hell on a startup, your wallet will also know when you have to go to replace them!

Jon

I agree on the injectors not the problem . As for the lift pump i thought the in tank was a better of the two factory pumps(im not say i have a problem with this pump) . i remember when i worked in the dealership i changed a couple of trucks on a TSB to the in tank pump .