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VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

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Old June 13th, 2020, 13:21   #1
Ext290
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Now that the passat is running noise free and I have a vagcom its time to dig deeper into the car. It runs good cold, once the temp gauge nears 190 it starts to miss. So I hooked up the scan tool and checked injection quantity,

Cyl 1 2.99
Cyl 2 - 2.66
Cyl 3 - 1.60
Cyl 4 - 1.08

Also the torsional value is always 0.0°kw, dosent matter if it is warm, cold, idle or 3000 rpm.

From what I have read the injection quantity could mean a bad injector?
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Old June 13th, 2020, 13:43   #2
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those numbers you recorded are what the ECU feels the engine needs for that cylinder at that moment to run smooth. This number will change often. A lot of factors are digested by the cars electronics to arrive at those numbers
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Old June 13th, 2020, 14:43   #3
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0 is a valid torsion number, but unfortunately it's also what the ECU will display if the actual value is off the scale on either side.

Might be worth tweaking it a tiny bit to see if you can get it to swing to 0.5 or if it really is a ways out.
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Old June 13th, 2020, 14:56   #4
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Will the torsion number change as the engine warms up or cools down? Or dose it stay pretty consistent? Just thought it a little odd that is perfectly zero.
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Old June 13th, 2020, 15:19   #5
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I adjusted the cam sprocket slightly and it went to 2. 5, adjusted it back to .5
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Old June 13th, 2020, 15:21   #6
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In my personal experience it will bounce 0.5 in one direction or the other as the engine warms up, between idle and blipping the throttle, etc.

A rock-solid 0.0 is not something I've seen.. and when I see it on my own vehicles I purposely bump the adjustment a bit just to convince myself it's real.
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