Club 80-90 Forums

This morning I jumped in the bus turned the key and ....nada ..nowt.. zip
empty battery, just 0.11 volts left

What the blithering heck..FFS...rant over, dummy found, set about finding the short circuit.
First recharged the battery with ground disconnected.
reconnect the ground checked the ammeter... jeez 20 amps discharge
No fuses blown
So that narrowed it down to heating, starting circuitry.
Disconnected the Alternator.. still drain
Disconnected the starter, same.
disconnected the manifold heater.. bingo down to 8 amps
Pulled No.1 relay out of the junction box result zero discharge
Checked continuity across relay terminal.. none, so relay good
checked thermo switch on therostat housing.. ah hah wire off and touching

reconnected properly no discharge

may have shagged the battery though

put it on a long deep charge Kev and then check it

im surprised the battery acid didnt burn your todge...

may have shagged the battery though

Just to clarify this in my head..
Does the thermo switch open with heat to turn off the carb/manifold heaters?

if that is the case where does the switches power come from, ignition?

?? --------[Blk]----====(/)====-- [Lilac]-------===relay===-------== ground

kevtherev wrote:

Just to clarify this in my head..
Does the thermo switch open with heat to turn off the carb/manifold heaters?

if that is the case where does the switches power come from, ignition?

?? --------[Blk]----====(/)====-- [Lilac]-------===relay===-------== ground

Yes and Yes

R0B wrote:im surprised the battery acid didnt burn your todge...

may have shagged the battery though

bigherb wrote:

kevtherev wrote:

Just to clarify this in my head..
Does the thermo switch open with heat to turn off the carb/manifold heaters?

if that is the case where does the switches power come from, ignition?

?? --------[Blk]----====(/)====-- [Lilac]-------===relay===-------== ground

Yes and Yes

OK thanks, so that big drain on the ignition when I turn it on.. are these heaters kicking off.. then the starter motor tugging another big amp drain.. sheesh
If the relay got stuck on.. and the ignition was off.. then that would drain the battery too I guess.
Hmmm did that relay stick?

been on charge for twenty four hours now.... still shagged