NO Electrics unless above 3000rpm.?

[1598cc]

Levin started playing up ; the rev counter, dashlights, windows, starter motor etc wont go BUT if i turn the key to on, roll start the car, itll fire up and drive with no electrics then if i drive above sorta 3000rpm then everything will work . kinda weird.

ive check the fuses on the batteryand the ALT one has blown out but i know why thats happend ; so i connected it back up rugged to see if it fixs it but no joy..

any other places to look

cheers

[ee904age]

Alternator brushes bung? Check the alternator output with a multimeter and that should give your answer.

[matt dunn]

roll start the car, itll fire up and drive with no electrics then if i drive above sorta 3000rpm then everything will work . kinda weird.

ive check the fuses on the battery

So the car wont start under it's own battery power?

Buggered if I know why people try and solve electrical problems in a car with a battery that is obviously no good.

If that battery wont start the car, get it tested or buy a new one.

And a 20 min spin round the block will not charge up a really flat battery.

The reason everything will go above 3000rpm is cause the alt will kick in and power everything up.

Matt

[1598cc]

nah it was doing this even before the battery went flat. its just i havnt driven it for a week and its flat as. ive tried another battery as well

[NZcelica]

definatly sounds like your altenator brushes and and some other things are stuffed, happens over time.
Get it rebuilt, only costs a little over $100 (chevettes one did anyway)

Matts theory above seems pretty conclusive actually, try a battery you KNOW is good.

[AJz]

^^^bang on what he said, as with anything old, sumtimes they just crap out.^^^