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  #21  
Old August 16th, 2016, 03:31 PM
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Quote:
Originally Posted by Red90 View Post
Is the truck a factory 200TDI?
Yes. Everything on it seems stock. I replaced fuel and air filter recently.
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  #22  
Old August 16th, 2016, 03:32 PM
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I just fixed a 200TDI that would run fine until the exhaust pressure built up at high speeds and then it would blow out the exhaust and loose turbine boost and keep the speed under 70.
You could also have a leak in your alda tube reducing your enrichment, badly adjusted or failing waste gate, and other things can cause the low speeds, as well as reduced fuel delivery, or even injectors.
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  #23  
Old August 16th, 2016, 03:35 PM
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Quote:
Originally Posted by rdavisinva View Post
I just fixed a 200TDI that would run fine until the exhaust pressure built up at high speeds and then it would blow out the exhaust and loose turbine boost and keep the speed under 70.
You could also have a leak in your alda tube reducing your enrichment, badly adjusted or failing waste gate, and other things can cause the low speeds, as well as reduced fuel delivery, or even injectors.
Oh god.

I feel like I could spend months working on this thing and still have a list a mile long of stuff to do.
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  #24  
Old August 16th, 2016, 03:43 PM
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65 at 2800 was about what I thought was normal. Lt77 and 1.4 255/85/75s
But mines a 110
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  #25  
Old August 16th, 2016, 03:45 PM
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Quote:
Originally Posted by st0k3d View Post
Oh god.

I feel like I could spend months working on this thing and still have a list a mile long of stuff to do.
See what the fuel pressure to the IP is, IIRC it's supposed to be around 8/9psi. My friend went through 4-5 lift pumps that only did 3-4psi before he did an aftermarket (FASS i think) lift pump system.
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  #26  
Old August 16th, 2016, 03:53 PM
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Quote:
Originally Posted by JohnsD90 View Post
See what the fuel pressure to the IP is, IIRC it's supposed to be around 8/9psi. My friend went through 4-5 lift pumps that only did 3-4psi before he did an aftermarket (FASS i think) lift pump system.
I guess a lil inline under hood fuel pressure gauge couldn't hurt. I just need to measure the fuel line size and I can zip tie mount it next to the fuel filter. Probably cost <= $30.

Is that 8/9 PSI at idle? I assume lift pump pressure rises with RPM as it is driven off the camshaft?
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  #27  
Old August 16th, 2016, 03:58 PM
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The lift pump will only pump(priming it wise) if it's on the right part of the cam lobe
Excuse my terminology, I always get shit confused




Quote:
Originally Posted by st0k3d View Post
Any advice on this? 200TDI, 1.4 TCase and it seems 105kmph (65mph) with foot to the floor in 5th is about what it wants to do, I guess if I layed into it for a while I could get it higher but it doesn't feel right. Relatively stock D90. I just feel like it should have more power.

No boost leaks

Idles good, no smoke

When I changed my fuel filter, I pumped the lift pump what seemed like forever and I couldn't get any fuel to come out of the bleed screw. I snugged the bleed screw and it seems fine since.

No idea on injector condition or fuel tuning
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  #28  
Old August 16th, 2016, 04:19 PM
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Quote:
Originally Posted by tomaco1 View Post
The lift pump will only pump(priming it wise) if it's on the right part of the cam lobe
Excuse my terminology, I always get shit confused
Ah that probably explains why I was pumping and nothing at all was happening. There was zero resistance. I guess I could disconnect the fuel solenoid and bump the starter a couple times to try again.

I drove it for a few hours since and it runs fine. I just feel like I am still down on power. To theoretically get up to 75-80mph (all windows/vents open) would have me burying the throttle in 5th for a while. I don't want to chance that with EGT's and no gauge.
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  #29  
Old August 16th, 2016, 04:35 PM
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Start easy.

Check the air filter for clogging and obstructions?

My tuned up, full intercooler 200tdi on 35s with 1.2 has no issue reaching 70. Mpg tho is in the low 20s at that speed.


Edit: I also have a full 200tdi timing pin kit and mini head dial gauge if you need to use it
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  #30  
Old August 16th, 2016, 04:36 PM
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I'd like to see your truck one of these days
I'm right in Bayport
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  #31  
Old August 17th, 2016, 07:52 AM
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Quote:
Originally Posted by tomaco1 View Post
65 at 2800 was about what I thought was normal. Lt77 and 1.4 255/85/75s But mines a 110
x2 I've taken mine to 75 to experience it but I don't have any real urge to run it at that speed. I'm comfortable at 60 in the right lane and the good skinny pedal response if I need it. I personally don't perform at 70-75 anymore so I guess I understand why my 33yo 110 doesn't either. ;0).
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  #32  
Old August 17th, 2016, 08:15 AM
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Quote:
Originally Posted by st0k3d View Post
Oh god.

I feel like I could spend months working on this thing and still have a list a mile long of stuff to do.
Also be sure and check the air inlet to the turbo.
If you hose is collapsing like mine was, it will cause very low performance at high RPM by chocking off the air feed to the turbo.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #33  
Old August 17th, 2016, 09:02 AM
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Quote:
Originally Posted by rdavisinva View Post
Also be sure and check the air inlet to the turbo.
If you hose is collapsing like mine was, it will cause very low performance at high RPM by chocking off the air feed to the turbo.
I have experienced that with other turbo cars.

Was this happening on the factory hose with the metal ribbing?
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  #34  
Old August 17th, 2016, 09:20 AM
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Another data point -

Stock 200Tdi, air conditioning running full blast, fully loaded with gear and two passengers, roof rack with lights, and 285's: 60 mph on generally flat roads.

**ABE EDIT** - with a 1.6 TC.
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  #35  
Old August 17th, 2016, 09:31 AM
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Quote:
Originally Posted by LostChord View Post
Another data point - Stock 200Tdi, air conditioning running full blast, fully loaded with gear and two passengers, roof rack with lights, and 285's: 60 mph on generally flat roads.
With a 1.6 or a 1.4?
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  #36  
Old August 17th, 2016, 09:56 AM
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Quote:
Originally Posted by st0k3d View Post
Was this happening on the factory hose with the metal ribbing?
I have a 300TDI manifold on my 200TDI and Yes I believe it was in the back where it makes a U turn.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #37  
Old August 17th, 2016, 09:58 AM
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When you guys are cruising on the highway at 60-65 in 5th. Do you have to keep your foot pretty deep in the pedal? (Maybe 50%?) It just feels so wrong to me, but I've never owned a car that had such little power, especially for its size/weight/aero
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  #38  
Old August 17th, 2016, 10:11 AM
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Quote:
Originally Posted by st0k3d View Post
When you guys are cruising on the highway at 60-65 in 5th. Do you have to keep your foot pretty deep in the pedal? (Maybe 50%?) It just feels so wrong to me, but I've never owned a car that had such little power, especially for its size/weight/aero
on my 200tdi + 1.222 tcase:

uphill? definitely. on fairly light grades, I need to floor my pedal in 5th, or downshift to 4th gear.

on flat ground highway, my pedal at 60mph is very lightly pressed.
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  #39  
Old August 17th, 2016, 10:12 AM
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The throttle response on a mechanical diesel is quite different than a gasoline engine. Power is very linear with pedal travel. With a gasoline car most of the power is at the beginning of the pedal travel.
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  #40  
Old August 17th, 2016, 11:01 AM
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Quote:
Originally Posted by solarguy View Post
With a 1.6 or a 1.4?
Lol - now you're just rubbing it in! With a 1.6...original post updated.
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