AGG conversion won't start (properly) |
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club joker 84
Groupie Joined: 21 Jul 09 Location: Cornwall Status: Offline Points: 138 |
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Posted: 23 Oct 16 at 23:08 |
I am finally getting to the end of a long running AGG
conversion on my van (previously a 1.9DG).
Obviously I have used GaryD’s notes, so a big thanks to Gary for those! I’ll do a proper post with pictures and stuff
soon.
Anyway, it’s all in and wired and plumbed, BUT IT WON’T
BLOODY RUN! It starts, but cuts out
after a couple of seconds. It’s on the
original immobiliser and key. I plugged
in VCDS and checked for fault codes, because it seemed like classic immobiliser
issues. It did have a fault stating that
the immob had prevented starting (fault 17978 P1570-35-00), and one on the immobiliser
that the key signal was too low (fault 01176 07-00). Had a bit of a fiddle about with the key to get it closer (have
fitted ring onto van ignition). Other
sites recommended removing the battery and touching the +ve and –ve leads on the
van together to ‘hard boot’ the ecu. Did
that, charged battery, reconnected. Cleared
faults. Now there are no faults showing
on VCDS, but same symptoms. Vans fires
straight away, but dies after 2 seconds.
Fuel pump working. Earths seem
fine (well I have continuity with chassis, not checked actual resistance). Engine has no exhaust or lambda fitted as
yet. Everything else is on there though. Pretty confident the wiring is correct. So, any ideas anyone?
Is there anything apart from immobilser that would cause these sort of
issues? Any and all help gratefully received! Ben |
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syncroandy
Yardie Joined: 18 May 05 Location: North Lancs. UK Status: Offline Points: 630 |
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If you've not already tried it I would suggest using VCDS to reset the immo using adaption channel 0. This makes it re-learn the ECU. I'm assuming it's connected right eg. ECU > Immo > OBD port.
Edited by syncroandy - 23 Oct 16 at 23:19 |
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club joker 84
Groupie Joined: 21 Jul 09 Location: Cornwall Status: Offline Points: 138 |
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Thanks Andy,
I'll give that a go tomorrow. Does it work on the free version of VCDS? I don't have the full version.
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club joker 84
Groupie Joined: 21 Jul 09 Location: Cornwall Status: Offline Points: 138 |
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OMG it works! Went to try Andy's suggestion (thanks Andy), but can't be done with the free version of VCDS. Had a fiddle around, moved some earths. Moved the key reader coil and noticed that it was holding on for a fraction longer.
Took another error code reading and got one related to the hall sender. Went back to basics and reset the coil position. I also connected the accelerator (sort of - with a bit of old wire!) so I could give it some revs and help it along. Gave it another go and it starts! Was very loud with no exhaust and ran quite rough. Then I noticed that I had not connected the vacuum hose from the throttle body. Connected that up and it ran smoothly (and not too noisily amazingly). Filled it up with water and bled radiator. Ran steady and smooth for a good 10-15 minutes whilst I did this. Got a few jobs to finish (make exhaust, fit driveshafts, tape up loom, mount ECU, etc) and it will be done. One thing I did notice though was that there were a lot of bubbles coming into the coolant tank when revved, even when pretty much fully bled. Does this mean that the engine has head gasket problems? Must be the only thing that I didn't change! If it is the head gasket, can it be done with the engine in the van? Thanks, Ben
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rowlesy
Vanorak murdered the murderwagen Joined: 09 Oct 05 Location: up unit! Status: Offline Points: 6466 |
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depends on routing of the plumbing but it may just be the water pumps working very well! i'd be looking at a coolant test first before messing too much.
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UberFukz broke another! sucky sucky five dollah!
always out numbered never out gunned! RWS welding 07846 380 467 (worcs) |
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club joker 84
Groupie Joined: 21 Jul 09 Location: Cornwall Status: Offline Points: 138 |
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Plumbing is routed as per JX. It is a new water pump, so fingers crossed that's what it is! Will see if I can get a sniff test done.
Will do a proper thread in readers rides and see where we get to. Thanks for the replies :-)
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club joker 84
Groupie Joined: 21 Jul 09 Location: Cornwall Status: Offline Points: 138 |
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Build thread here
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Pecha
Not Quite Newbie Joined: 11 Feb 16 Location: Latvia Status: Offline Points: 12 |
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Same here (ADY swap). Thanks for the tip!
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www.vwt3.lv
mr.janis.petersons@gmail.com VW T3, 2.0 ADY + UN1 |
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