Injection Engine starting Problem

[TimC]

Blue sensor arrived and fitted. No change. So what next? ECU?

I thought I'd pop in a new Hall sender at the same time (the only ignition part not yet changed), but I can't get the vane rotor off - it's not as shown in the Haynes manual with a circlip retaining it. It seems to be permanently attached to the shaft. There are no alignment slots for the rotor on the shaft (apart from the one for the rotor arm), so how does it come off to fit the new sender?

[Aidan]

ss and mv disi don't have the circlip on top you have to dissemble from the bottom which is not easy and you can break or damage the casing whilst extracting the roll pin that is under the spring in the drive plate as it is well tight
haynes manual doesn't show it you need bentley for a dijifant really as the test procedures are all in that, or downlaod the driveability manual and stuff from vanagon site as that has it all in too

[TimC]

Got it, fitted it, no change. Wiring checked - all good. I've disconnected the O2 (Lambda) sensor, and that seems to have cured it, so either the sensior itself or the co-axial cable has failed - probably! Standby for further investigation...

E D I T: Referring to the T2 sensor here. Forgot I'd already reported on that! I'll leave the Hall sender for now; I worked out that it needs the distributor to be disassembled, and I don't want to break it as you suggest! I've just ordered the Bentley on CD from VolksWest (£5!), and I've been discussing the topic on The Samba. No definitive answers yet, but that's no surprise after reading the Wiki! Just a process of elimination...