truckman95

So I have searched high and low for threads with similar symptoms that my truck is having and I have found nothing that helps.

It has a weird no power under load issue. it was like that when I bought the truck and I have replaced the worn 22re with a 150K good running 22re and swapped out the auto trans for the 5 speed as well as put on a TRAIL GEAR 4" solid axle swap lift kit.

now I want to drive it! haha I checked for a plugged CAT, problem still there, replaced the fuel pump, problem still there, swaped my buddies good air flow meter. problem still there.

So I'm wondering what other components from the original truck could affect this weird hard start, no power under load issue?

PLEASE help I really want to drive the truck. I have had the truck since july

truckman95

and when I say no power I mean no power, like if I let the clutch out and give it gas it bucks and wants to die. but it will idle fairly good

Stuwy123

iTrader: (1)

I've never heard of such an issue.
Does it rev in neutral with no load.
Was your clutch installed correctly?
Has your transmission grenaded?

If it'll rev up no problem, then something is binding the drivetrain.

truckman95

yea you can rev it up in N but it has a hic up at higher RPM. yea the clutch is 6 months old and came on the engine that I pulled out of the donor truck. and I have driven the truck it just has no power and acts really weird.

truckman95

does the air flow meter have to match up with the TPS sensor? cause my air meter is from my 1993 truck The 22re I installed was running perfect and has 153K on it. and was out of a 1994 pickup

wyoming9

iTrader: (1)

Have you checked your fuel pressure with a gauge??

When swapping engines did you install a new fuel filter??

SPARKS89

iTrader: (1)

Did you switch anything over from the old motor to the new one? When you say hiccup, do you mean it revs up and then sounds like the fuel is cutting off?

It sounds like a TPS issue to me. You can unplug it and drive without it. See if that solves your problem. If that fixes it you need a new TPS.

truckman95

no its a complete motor, I didnt have anything from the old motor. all I did was plug in a couple vac lines, the plugs to the computer and the fuel line. I have the motor in and hooked up in like an hour

truckman95

no I didnt, but see the strangest thing is that I heard the new engine run before me and the seller pulled it out of the donor truck and it ran great! so what was left on my truck that would affect engine performance?

SPARKS89

iTrader: (1)

See if you've got a buddy that can swap out their ECU for you to try that. Maybe the computer has gone bad.

bbrideau

did u install the proper ecu for the motor? they used a few different ecu's

truckman95

no its the same ECU for that harrness and that engine it all came out of the same good running truck. thats what got me so puzzled!

truckman95

idle is fine. anything off idle it pops and sounds like a backfire and like bogging out inside the air box

truckman95

I'm going nuts. ahhh!

SPARKS89

iTrader: (1)

You say you heard the engine run, does that mean you drove or rode in the donor truck before the motor and tranny were pulled?

truckman95

yea it ran and drove great. just a lot of body damage is why the truck got parted out