TDI Convertion with no VAS errors does not want to start

Jack@European_Parts · Dec 10, 2015

Ummm if the 0x01-10-002 IQ makes no difference than your timing is out or the barrel is not making commencement changes ......you know the test I keep pushing you to do.....?

Eric · Dec 10, 2015

32768 is default (middle of a 16-bit integer) for adaptations 1-5. That's good, and leave it that way. If 18 is at 0, I wouldn't touch it unless you have issues with a speed limiter. Any change you make in there is more or less irreversible, so now is not the time to worry about this. See if the manual has reference values for the MAF, either resistance with engine off, or voltages with engine running. See if idle speed becomes normal when you unplug the MAF. Make sure the anti-shudder flap isn't stuck partway, or that your EGR isn't fully open all the time, or that you don't have a huge leak in your intake somewhere after the MAF. Does the engine make abnormal sounds?

Jetta 97 · Dec 11, 2015

Your timing is to much advance.Look at second field , it has value 98. It needs to be from 60-70.
Need to move pump anti clockwise just a hair.

Jack@European_Parts · Dec 11, 2015

Thank you Marin .........I been saying that too.......I think OP should feel guilty at this point with Q for quantity adjustment..........gotten to bed.

pviljoen · Dec 11, 2015

Eric I have opened the MAF and found one of the electrode came loose. I have ordered a replacement. should be here hopefully by Monday.
EGR fully closed. does change if I connect a vacuum pump to it.
On 18 was just worried that it was deliberately changed in coding of the ECM.

Jack not quite sure, which tests are you referring too.

ivagp · Dec 11, 2015

what part# did u order

pviljoen · Dec 11, 2015

Bosch 06A906461

Jack@European_Parts · Dec 11, 2015

Bosch 06A906461

That's acceptable....... if genuine.......however, was superseded like 10 years ago to 038-906-461B and then C with integrated velocity stack ramp to MAF sensor.

Jack not quite sure, which tests are you referring too.

Commencement ( Cold start valve as described in English translation ) tests and timing.......

pviljoen · Dec 12, 2015

Thanks Jack will look those up. Which dealer do you use to order your parts?

pviljoen · Dec 12, 2015

If I go 0x01-03 I can only do Sequential test and not selective. Any particular reason for that.

Jack@European_Parts · Dec 12, 2015

Correct ........start the first test in outputs and than once you are in the test while idling......... back out and go to measuring block 000 and log immediately.

Uwe · Dec 12, 2015

pviljoen said:
If I go 0x01-03 I can only do Sequential test and not selective. Any particular reason for that.

Because the ECU is way too old and low-tech to support Selective Output Tests.

-Uwe-

pviljoen · Dec 21, 2015

Ok it has now been two weeks. still waiting on the MAP sensor after the first vendor took a week to tell me that he is out of stock.
In the mean time. replace the alternator to make sure I have 12V instead of 9V.
Double checked the timing settings at the crank pulley, DP and crankshaft. Replace the bolts on the DP pulley since they where getting thin at the top.
Two problems
1. Timing does not move from 38 even though I have tested by moving the DP shaft to total advanced and retard. Did this since after the removing the serpentine belt to replace the alternator, the engine did not want to start.
2. Engine just cranks no starting and I cannot moved the commence of injection away from 9.2 BTDC. This is outside the recommended setting, correct?

Jack@European_Parts · Dec 21, 2015

You are confusing base timing mechanical, with scanner data........do not mix the two.

Your base timing is out and or fuel is not primed.

Does engine start with carb cleaner or are cylinders flooded from base timing deviation?

ivagp · Dec 22, 2015

what about rpm while cranking?

pviljoen · Jan 17, 2016

Solved this problem. Since I am using two different harness system, getting colors confused is easy example Li/Ro and Ro/Li and Y/ws and Y/w. What happened was I had the main relay(VW) on switched power(Sammi), the diesel pump will switch off when I cranked the engine via the Key in starter position. used my trusted starter stick and discovered this.
Next step in Conversion process - document simplification of 2x main relay and 2x fuel relays into single unit each.

Also my Guru in Wiring harnesses for the TDI in BC, did not use default colors, used different colors to lengthen the wires and just in general totally FUBARRed my harness(if it was my harness that he send back). I have to check a wire end to end now to make sure the color combination is correct. May a thousand camel fleas feast on his body.

See facebook.com/TDIConversions for pictures and details.

pviljoen · Jan 17, 2016

Thanks for all the real enthusisats

Just a big shout out to all the real mechanics out there and everybody that helped on this thread. Your great work is greatly appreciated. GOD bless.

Jack@European_Parts · Jan 17, 2016

That is why WD is paramount for PIN # to PIN # per current track ..........regardless of race.........

WD.......WINS!

TDI Convertion with no VAS errors does not want to start

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