Intermittent starting problem on 2000 1.4 Polo (Mrs'!)

[humpbackmaniac]

Can anyone help with what appears to be an immobiliser problem, the ladys Polo 2000 model 16v 1.4 has an intermitent starting problem, it cranks over fine but no life at all, then after a few tries it fires and runs perfectly. What is confusing me is that it either runs perfectly or not at all.

This is what made me think immobiliser, tried the spare key as it has a widget in teh key I believe, and tried disconnecting the battery for a few moments in a hope to reset the ECU.

Still does it and leaves her stranded, any ideas anyone?

[martycossie]

i say try temp sender.

[humpbackmaniac]

Thanks buddy, just the little brass sender unit on the block? Can I disconect it?