When I come out on a morning and start the car from cold the rev counter doesn't work, the lights are dim and the heater fan is a lot slower than it should be. If I rev the car to 3k rpm once, everything works as it should. Anyone know whats up? If I just start the car and don't rev it and leave it to idle for 20 mins then turn it off it won't start due to the battery being flat!!! but if I start it, then rev it to 3k everything's ok?

 

Could be battery or alternator but most likely battery.

 

i have exactly the same problem. it drives me nuts cos i cant find out what it is. you'll find once it cuts out though if you bump start it and turn it off straight away then it will start fine again and again, mine doesn't seem to be the battery. i thought starter solenoid too. but i dont know. i recently redid all my earths and that made no difference.

if you find out what it is please please tell me what it is

 

sounds like a dicky alternator to me.

 

Well it's had a new alternator and new battery! still the same. I've also renewed all my earths. Must just be supposed to be like that

 

mine does this too i wonder am going to try a b82rez, lol

 

i was trying to save time!

 

the alternator is triggered when u start the car,my cossie used to do this to,its was the blue wire,after years of abuse it was just crap,made a new one,never done it again

 

do you mean just re-terminated it? i know the one on mine aint the best. or can you just snip if off further along and replace the thing completly?

 

i replaced it front to back!if its off,the alternator dont charge,as i found out again when my onion came to halt on saturday
put the wire back on,bump and off again

 

didnt think ne body would get that nice one