ZX 1.9d Wont Start & Key Pad Probs

pdhaynes · Unread post by **pdhaynes** » 07 Dec 2004, 17:30

Sometimes when I switch the ignition on everything acts normal; I then enter in the security code into the keypad and get the green light. However when I try to turn the engine over nothing happens at all, it's totally dead. When I remove the key and repeat the procedure the keypad will automatically go green and the ignition still does nothing.
Sometimes the problem sorts its self out however if this takes too long I have to disconnect the battery for an hour and try again, which normally works.
The battery is fine and all the fuses are intact so I'm guessing it's the keypad. Can anyone think of a solution?
Will disconnecting the immobiliser fix it?? If so how do I do this?
Thanks
[V]

nick · Unread post by **nick** » 07 Dec 2004, 19:50

The keypad won't actually prevent the engine turning over, it just stops fuel getting to the injector pump.
Its worth checking the earth strap to the engine. Can you hear the solenoid click when you turn the key ?

pdhaynes · Unread post by **pdhaynes** » 07 Dec 2004, 21:09

Thanks for your help, yes there is a clicking sound but why does the keypad light up green when the ignition key is put back in?

fordsone27n · Unread post by **fordsone27n** » 07 Dec 2004, 21:21

I always thought the keypad had a timer delay of something like 30 seconds so you don't have to kepp punching the code in if for example, the car doent start or for some reason you need to nip in and out. This may indicate that the keypad is not the problem.
Adrian

pdhaynes · Unread post by **pdhaynes** » 07 Dec 2004, 21:26

Thanks for the advice but would this also cause the keypad to have problems? Also why would disconnecting the battery for an hour temporarily resolve the problem?

nick · Unread post by **nick** » 07 Dec 2004, 21:44

It is completely normal for the keypad not to need a code entered the second time - the keypad is almost certainly a red herring here, and nothing to do with the problem.
If you can hear the solenoid click when you turn the key I would guess its either the battery on the way out, a dodgy earth connection or positive connection to the battery, or perhaps a knackered starter motor.
As to why its ok if the battery is left disconnected, maybe there's something draining the battery, perhaps the boot light is staying on etc....

wilkobob · Unread post by **wilkobob** » 08 Dec 2004, 00:40

Sounds to me like you want a new battery, my current car was like this when I bought it, everything worked but wouldnt turn over, replaced battery and everything was ok. Also try cleaning the clamps on the battery leads, maybe a bad contact. Alternatively, if this dont solve your problem, id say the starter motor was kanckard. The immobiliser sounds perfectly normal to me.
Simon