106 deisel

[farmertom]

Battery light came on the other night checked voltage on voltmeter 11 volts so thought ok dodgy alternator went got a new one fitted it, Its the same as before.

When the ignition is on there is a huge drain on the battery also, only since its been playing up though!

Is there something else it could be?

Any help is much appreicated

cheers Tom

[bettyswollocks]

Did you try a new battery ?

[farmertom]

yes, it made no differance at all.

[bettyswollocks]

Current drain on the battery can be checked with an ammeter. Make sure the ignition is off, then disconnect one of the battery cables. Connect one ammeter lead to the battery and the other to the cable. The normal current drain on most vehicles should be about 25 milliamps or less. If the key-off drain exceeds 100 milliamps, there's an electrical problem that requires further diagnosis.

Finding the hidden current drain can be time consuming. The easiest way to isolate the problem is to pull one fuse at a time from the fuse panel until the ammeter reading drops. This will tell you which circuit is draining the battery. Then you have to check the wiring and each of the components in that circuit to pinpoint the problem.

[davidireland]

Check boot lamp, is it staying on with the boot door down. Fold down rear seat and have a look.
Has your car got an aftermarket radio? if so is it wired correctly ie it goes off with the ignition.
Have you an alarm?
Any other acessory?

[farmertom]

the drain as i said is huge ie 4 volts in a min with ignition on not starting teh engine with engine running alternator charges at 11.64 which is a discharge at the end of the day think i might try dissconnecting the radio, dont think this is the problem tho. my guese is the heater plugs relay is playing up oviousely i dont know that for sure, any idea on price for one of these?

cheers tom

[davidireland]

does the alternator output go up to 14.3 or so if you disconnect the heater plug relay?

[chopper1192]

Disconnect the starter motor and measure again. They can fail and drain your electrons away to earth.

Also remove the glow plug relay and try measuring it again.