Boost Lost on 200 TDI - Defender Source
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  #1  
Old April 15th, 2010, 09:37 PM
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Boost Lost on 200 TDI

I was driving home today and I experimented a loss of Boost for about 5 minutes then worked fine.

While driving felt like the clutch was slipping and look at the boost gage and was 0 pounds, then all the sudden waroked as usual.

Any suggestion as to what to look for?

Thanks in advance

Gustavo
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  #2  
Old April 15th, 2010, 09:45 PM
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Could be
1. your waste gate actuator got stuck open. Not sure what to lube it with.
2. Worse case is that you exhaust gas impeller broke a piece off that got wedge in between your waste gate and exhaust wall and kept the the waste gate open.
3. Or some type of vacuum/boost leak that would not let the turbo spool up but I am sure the car would run like s*(t and I like you said it was only temporary.
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  #3  
Old April 16th, 2010, 09:39 AM
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Do you have an EGR? They can get stuck open and make you loose your boost.
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  #4  
Old April 16th, 2010, 05:08 PM
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200tdi doesn't have EGR.

could well be the pipe from the FIP up to the turbo, there is a "needle" valve thing inside the pump, which is controlled by the turbo boost, to give more "on boost" fuelling.

These can sieze up giving similar results. i've had it happen on mine. You'll see how it's possible when you see the breather for it (well, it's tyhe breather for "under" the diaphragm in the FIP, as it needs to be able to move) but atmosphere can get in along with damp, which causes corrosion and hence the needle siezes.

Remove the top of the pump (4 screws), remove the diaphram (but make sure you take note of the position of the round disk... there should be a dit stamped in it), peer down the hole where the plunger comes out of, and you should see the end of the needle.

squirt some WD40 in there and using the end of a screwdriver, move the needle back and forth until it free's up.
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  #5  
Old May 8th, 2010, 07:29 PM
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Well it happened again ( not that I should be driving stick these days ). Took the car 110 for a spin, and I had the same feeling, I was going uphill and my speed was not good so I hit the gas and it sounded like my clutch was slipping and my boost gage was at 4 max.
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Old May 8th, 2010, 09:45 PM
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elaborate on the "seams like the clutch was slipping"
engine speeds up but truck does not?
with out a some load on the engine it will not make full boost..
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Old May 8th, 2010, 11:30 PM
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That is correct , engine speeds up but no boost, truck eventually speeds up
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Old May 9th, 2010, 12:05 AM
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that sounds like a clutch problem, the engine should not speed up without a proportional increase in road speed. less load on the engine the less boost it will need to make. a slipping clutch will in effect reduce the load on the engine.
do you have a tac to watch while this is happening? if staying in the same gear and the engine rev's up with no or little increase in road speed, that is a clutch or drive train problem.
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  #9  
Old May 10th, 2010, 01:12 PM
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Clutch is like new , so it needs to be from the turbo area ( and I can't seem to trace all the hoses of the turbo )

I've noticed when I start the 110 with the hood open I see a small puff of smoke right behind the turbo
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Old May 10th, 2010, 01:15 PM
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Maybe your downpipe slipped down / off?
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  #11  
Old May 10th, 2010, 01:17 PM
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Quote:
Originally Posted by dave_lucas View Post
Maybe your downpipe slipped down / off?
That'll do it, that happened to me.
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Old May 10th, 2010, 01:31 PM
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G, I'm coming down this Friday and again Sunday. I could take a look/test drive with you Friday if you want to meet over at Treasured. Or if your not supposed to drive, I'll come over your place!
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  #13  
Old May 10th, 2010, 05:13 PM
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Dave / Jonathan,

Please don't kill me, is the downpipe the one between the Turbo and the Firewall, I can't get my Italian Sausages ( fingers ) in that area


Trevor, that will be awesome, I am not supposse to clutch , but hell that will not stop me, I can see you at Tresured on Friday.
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Old May 10th, 2010, 06:28 PM
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all clutch componenets were new less than 7k ago when tdi conversion was done. on this truck, the injection pump signal comes off the turbo housing fitting, but the waste gate and boost gauge are plumbed from the intake manifold. If there is only 4lbs of boost it sounds like a leak to me although the sticking needle valve in the IP is a definate possibility. Both times Gustavo has had this problem it has been after the truck sat for a while.
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Old May 10th, 2010, 07:28 PM
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Is there play in the clutch pedal? Just because it is new, does not mean that the hydraulics are not bad, causing the clutch to slip.
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  #16  
Old August 26th, 2010, 11:02 AM
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Did you get this problem solved and if so what was it?
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  #17  
Old August 26th, 2010, 01:26 PM
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Someone had adjusted his clutch pedal way out @ Rousche Creek. He said he had it adjusted back and it was fine. I also detuned his injection pump so it was just slightly ritcher than stock.
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  #18  
Old August 26th, 2010, 05:40 PM
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So it was a clutch problem then.. clutch adjustment....
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