3b no spark again

[thecrim22]

oldman went out this morning to find the car wont start been running fine with no probs but its not getting a spark from the coil. checked the timing first as this was problem last time all ok. changed crank sensor (white plug) and the coil unit with a knowen working one. anyone know where the 3b gets its signal to spark the coil?

[Error404]

http://www.s2forum.com/forum/showthread.php?t=49771

[newsh]

Describe how you checked the timing. Flywheel, inside dizzy and cams?

Does the car have an aftermarket alarm immobiliser?

[thecrim22]

yup crank, cam n rotor checked and nope no alarms

[newsh]

Can you read codes with Vagcom?

Or blink the codes with a LED?

You can also check the hall sensor signal with an LED I think..

If that was ok I'd maybe take the starter motor off and check that the timing pin is present.

[SteveH]

Flywheel timing pin as John says. Not the easiest to check, but will cause a no start if it's snapped off. I had this happen on my 3B.

[thecrim22]

will check wen weather stops pissing down was running fine last nite tho getting to the stage somebody might pick up a cheap s2!!!

[quattro turbo 550bhp]

no spark

Flywheel timing pin as John says. Not the easiest to check, but will cause a no start if it's snapped off. I had this happen on my 3B.

i had the same on a 20v rr quattro take starter motor out n turn engine by hand with a spanner on crank nut to check pin

[John.]

..... getting to the stage somebody might pick up a cheap s2!!!

Keep me posted

[thecrim22]

update for this guys it was the hall sensor in the dizzy had a hell of a job getting a replacement for it

[Tomhorner]

Glad you sorted it! When his happened to me was also the pin on the flywheel that came off.

[andy10v]

update for this guys it was the hall sensor in the dizzy had a hell of a job getting a replacement for it

Where did you get one in the end?

[thecrim22]

got one for a mk2 golf from dingbro and swaped the sensor over to the 3b mounting plate

[etsola]

Sorry to highjack a bit - are 7a/3b hall sensors units the same or have the same specs as a AAN cam position sensor units (just thesensor itself) ? I fitted one (it fits) but haven't tested in the car yet. Easier to source - 15$ US at EFI express on this side of the pond.