I think so, I've changed the sensor wire, all seems fine, can't seem to replicate the fault, the soldering to the esc & motor is 100% so will see how it goes next time out.
The car will run with out without a sensor wire, so would seem odd if that had gone faulty but it was a new one might have been a dry joint who knows..........
I did find that a motor screw was missing so replaced that too (nipped up a bit tighter - always worried about stripping motor cans) maybe that had something to do with it but the mesh was still bang on.
Anyway thanks to everyone - will run it again on Sunday see what gives.
If it packs up agin I'll sling it in the bin. LOL!