Car Mechanics Discussion Forum - Any Audi specialists out there ??

A1 Autos Just arrived Offline Posts: 43	Any Audi specialists out there ?? 08.02.10 at 01:44:53 i need to know tubo boost pressure on 2002 audi 1.4 tdi pd. only trouble is nobody seems to know anything about them. how many psi produced on boost ????????????????? i need to know to check its not overboosting cheers guys
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markt

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Re: Any Audi specialists out there ??
Reply #1 - 08.02.10 at 20:23:14

can you get access to a bosch kts diagnostic?
these have a setting where you can let the ecu control the boost solenoid at a set idle speed to check if boost is ok.
not sure if these have the same variable vane turbos as used by their bigger brothers which cause the overboost fault.
also worth a check for wastegate solenoid sticking,vac faults,mechanical fault with actuator linkages/spindle as these stick often. may also be worthwhile to ring a turbo repairer, we have a couple of times and have had great response from them when we needed any info on setting one up.

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A1 Autos

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Re: Any Audi specialists out there ??
Reply #2 - 08.02.10 at 20:36:10

Cheers m8 for the help
Unfortunately i havent got KTS but i do have VAG com so i was ale to operate the solenoid today and it all works except is seems as if the Actuator rod is getting sticky and sometimes not opening the wastegate fully and therefore overboosting , this I presume is causing the ecu to go into some form of los and restricting the revs until you stop and key off/on again. Sprayed some wd40 onto it and got it moving fully again, cleared codes and gave it a test run and codes havent come back and no loss of power so fingers crossed. anyway with rod sticking i was getting 1.3 bar on my pressure gauge - is that too much boost for this little a2??? what is the norm pressure..... cheers

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karl benz

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Re: Any Audi specialists out there ??
Reply #3 - 08.02.10 at 21:36:30

A1 Autos wrote on 08.02.10 at 20:36:10:

Cheers m8 for the help
Unfortunately i havent got KTS but i do have VAG com so i was ale to operate the solenoid today and it all works except is seems as if the Actuator rod is getting sticky and sometimes not opening the wastegate fully and therefore overboosting , this I presume is causing the ecu to go into some form of los and restricting the revs until you stop and key off/on again. Sprayed some wd40 onto it and got it moving fully again, cleared codes and gave it a test run and codes havent come back and no loss of power so fingers crossed. anyway with rod sticking i was getting 1.3 bar on my pressure gauge - is that too much boost for this little a2??? what is the norm pressure..... cheers

that sounds a lot

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Nobster Antique Offline Posts: 14238 Gender:	Re: Any Audi specialists out there ?? Reply #4 - 08.02.10 at 22:23:49 Is it a Garrett turbocharger incorporated in the exhaust manifold with a side mounted intercooler. If so boost is 2.3 bar absolute. So if your getting 1.3 bar pressure that sounds about right.
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A1 Autos

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Re: Any Audi specialists out there ??
Reply #5 - 09.02.10 at 00:44:02

Yeah i think its a garret , its not variable vane though, and the intercooler is mounted behind the Coolant Radiator at the front of car. I checked the price and even for reconditioned one they want about £500-£600 so I just wanna make sure.
and you cant buy the actutor separatley its all one unit to buy so im told by Audi.
Cheers for the help guys .....

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A1 Autos Just arrived Offline Posts: 43	Re: Any Audi specialists out there ?? Reply #6 - 09.02.10 at 00:46:56 Now i rember actually no its not behind rad it is on the side of it, youre right cheers........DOh must be getting late i guess!!! ha ha
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Nobster

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Re: Any Audi specialists out there ??
Reply #7 - 09.02.10 at 01:12:59

A1 Autos wrote on 09.02.10 at 00:44:02:

Yeah i think its a garret , its not variable vane though, and the intercooler is mounted behind the Coolant Radiator at the front of car. I checked the price and even for reconditioned one they want about £500-£600 so I just wanna make sure.
and you cant buy the actutor separatley its all one unit to buy so im told by Audi.
Cheers for the help guys .....

Some are some are not on this model. Cool

So it's running ok now after a decent test drive? Undecided

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A1 Autos

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Re: Any Audi specialists out there ??
Reply #8 - 09.02.10 at 01:34:57

Yeah thanks m8 , took it up the road after clearing codes and lubricating the wastegate actuator and codes never came back and i never lost power again, so i gave the car back to the customer but who knows how long it will last for though!! mind you he's very happy and says it drives like a new car again now, so cant be bad i guess!!

happy days......

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Nobster

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Re: Any Audi specialists out there ??
Reply #9 - 09.02.10 at 04:33:14

A1 Autos wrote on 09.02.10 at 01:34:57:

Yeah thanks m8 , took it up the road after clearing codes and lubricating the wastegate actuator and codes never came back and i never lost power again, so i gave the car back to the customer but who knows how long it will last for though!! mind you he's very happy and says it drives like a new car again now, so cant be bad i guess!!

happy days......

It might happen again in time if the cars only doing short journeys? Roll Eyes

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BlahBlahBlah Antique Offline Posts: 12928 Undecided Gender:	Re: Any Audi specialists out there ?? Reply #10 - 09.02.10 at 14:22:00 http://www.technologie-entwicklung.de/Gasturbines/VNT15-Turbo/vnt15-turbo.html Might no be of interest to you, but worth a bump anyway
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BlahBlahBlah Antique Offline Posts: 12928 Undecided Gender:	Re: Any Audi specialists out there ?? Reply #11 - 09.02.10 at 14:24:57 http://www.innotecworld.com/c-1064-turbo-clean-set.aspx Snake oil or worth a try?
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A1 Autos Just arrived Offline Posts: 43	Re: Any Audi specialists out there ?? Reply #12 - 09.02.10 at 19:36:52 thanks for the link, and actually might be worth a shot, certainly cheaper than another turbo heh...... cheers guys ..... and yeah i agree wont be too long probably before it happens again, but will persevere for now anyway.
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