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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old May 15th, 2012, 06:31   #16
Jasonsansfleece
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Runonbeer,
That's what what I was told I would receive, and that's how it appeared when it arrived, clean and assembled.
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Old May 16th, 2012, 05:58   #17
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His logs look good to me.



Can you post up a short video of it, how its not running properly?
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Old May 16th, 2012, 08:08   #18
Jasonsansfleece
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Thanks JFettig for posting my logs on the forum.
I'm rather disappointed there is nothing wrong expressed in these plots.
I could post a video.

Are the injection quantity and duration values given in the log actual amounts or are they theoretical ie the ECU for a given set of parameters says inject "x" amount for "y" time, which is what we see logged, but due to some fault in the fuel delivery system or the injectors, some other amount is actually injected?

Is it possible that for some reason the injectors would inject an amount other than what the ECU calls for?
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Old May 16th, 2012, 08:28   #19
Jasonsansfleece
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Revisiting post #10 where I tested the Tandem pump.

I found the necessary banjo fitting, hose and gauge to measure tandem pump pressure.
With the engine at 85* and at idle I had 40lbs.
Increasing the rpm the pressure would rise to 80lbs (the gauges limit) and beyond by 1100 rpm (Bentley says 51lbs @ 1500 rpm)
Doubting the accuracy of the borrowed gauge, I went to Napa and bought the only gauge available.
Doubting the accuracy of the new gauge, it never the less showed a surge in pressure way beyond the specs.
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Old May 24th, 2012, 19:04   #20
Jasonsansfleece
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Well,
Car is still not running properly.
Any one care to comment on this idea?
That the ECU, having been disconected from the battery for three weeks,
due to electrical discharge reverted to some form of basic function.
Possible?
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Old May 24th, 2012, 19:07   #21
whitedog
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I think that there is a restriction in the return designed to maintain a certain pressure in the head rail, but I don't know if it being restricted would cause your problem.
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Old May 24th, 2012, 19:30   #22
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Hook your vacuum pump up to the small outlet on the brake booser while the car is running, how much vac is the pump drawing at idle?
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Old May 31st, 2012, 03:52   #23
Jasonsansfleece
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I spent four and a half hours at the dealership and they where unable to diagnose the problem. The upside is they charged for two and a half.
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Old May 31st, 2012, 05:47   #24
whitedog
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What testing did they do and what were the results of their testing.
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