Please help, was driving home one day an all was fine ...
Then the speedo started jumping all over, dropping to zero then bouncing up to 100 mph and anywhere in between (whilst the car maintained constant speed).
also the engine light came on, went off then back on and stayed on.
So i pulled over had a look under bonnet, all looked to be running ok(no odd smells or sounds)
This is when i made the fatel mistake, i turned the engine off! tried to start it back up with no joy. The RAC had a look and suggested a possible TDC Sensor or ECU failure. Towed it to a garage who's best guess wat the Distributor so I got one and the fault is still there.
I am getting 2 sparks but it wont start, the fuel pump's fine (an there is fuel).
Please help...

 

fuel
air
compression
correct ign timing

if you have all 4 it should run.
start with the basics.