My ford sierra does not turn over, immobiliser wont allow it to start

you need the key fob to start the car

Dont think a 92 had a chipped key on this car sothats not the problem perhaps this is why is has a weekend boy racer alarm fitted ,now with battery connected turn alarm off ,then disconnect battery ,now wait 5 mins ,then reconnect the battery see what happens ,ford sierra the jelly mould car

have to take it to ford usually an ecu problem

It shouldn't matter if the key is the original or not it has been programmed to the car immobiliser, have you changed the batteries in the key, a low battery can cause the key and immobiliser not to communicate, did you take it to a ford garage, Main dealers are always the best to deal with especially when ECU and immobilisers are involved, there may even be a software update for your car that addresses this issue, may even need a new key but they are expensive, don't buy off eBay they won't work, hope this helps

Sounds like alarm module has failed. Call ford parts and ask if common failure, if so replace. You could disconnect the alarm module and see if the car starts.

If the car turns over really fast then it could be the timing belt, Does your car have an immobiliser? with it starting and running for a few seconds it sounds like an issue with the key not communicating with the car.

Your ford dealer visit may not be as expensive as you think, you need 2 pats keys and have them perform an ignition key code erase then they should be able to program your 2 new keys, The Ford Dealer I work at only charges 0.5hrs or approx $50.00 dollars Canadian.

classic symptoms ,factory immobilisor has cut in ,have you lost the chip out of the key??try the spare key

can you let me know what is the immobiliser stopping .is it stopping the starter turning .or is the engine turning over and wont start.thanks