Classic Audi Technical Mech/Tech Engine » Engine performance 1Z audi 80 cabriolet

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Old 27-03-18, 05:10 AM   #11
fritzvis
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Is boost something you can check with ODB2? I have connector and adapter for ODB2...
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Old 27-03-18, 09:55 AM   #12
msh
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Yes, but depends on software. I've no experience with something else than definite diagnostic tool for VAG cars - VCDS - VCDS can draw nice graphs of various parameters, useful for such check.
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Old 27-03-18, 11:07 AM   #13
rangerovering
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Low pressure fuel pump worn out?
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Old 27-03-18, 11:52 AM   #14
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If you can get hold of anybody with VCDS it would help - at least you could see where the problem is. My B4 went sluggish - checked the pump timing and found out it was out, so slackened the 3 bolts off and tweeked it a couple of degrees and hey presto - back to normal...eventually a worn pump will need replacing, but it gets you out of immediate trouble.

Its a while since I had my B4, but having a full version of VCDS certainly helped keeping it going!

Have a look at the Ross-Tech link below - it will give you an idea of what to look for.

http://www.ross-tech.com/vag-com/cars/tdi.html

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Old 27-03-18, 03:13 PM   #15
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...or simply buy in ebay some cheap chinese ross tech cable clone for 15-20 quid. Or, if you want to support them, and are not scared about limitations the fact that licence of VCDS-Lite is tied to one PC, buy VCDS Lite licence AND ordinary OBD2 cable which is based on FTDI chip.
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Old 27-03-18, 05:26 PM   #16
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Just removed EGR and it looks pretty clean... not clogged up... there is deposit but as expected... will clean anyway tomorrow. Next step is turbo boost...
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Old 27-03-18, 08:54 PM   #17
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make sure all the small vac hoses are good, I had a split one on a tdi and it made it very sluggish
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