RN105 Hilux battery light /high idle

[Grega]

Folks
I have a 22R (under)powered Hilux.

I took it out for a bit of fun on the weekend.

nothing special, just some mud, a low river crossing or two, now have a problem or two. shit i made a rhyme.

1. the battery light came on after my first river crossing. everything else ok, car running fine. kept going on. next river crossing, battery light went off after i'd been thru. not long after, it came back on. it stayed on. is still on today - figured once the bastard dried out she would be right - no sir, i don't like it. still on. figure the regulator is shat as a result of the water. gave it a blast with the air compressor today. no good.

2. i have a high idle problem. like 2500rpm high idle problem. the venerable powerhouse has a electric choke on the 22R. figured it was stuck. when i switch it off man it keeps going - is kinda cool. cept it stinks. run on sucks. so took the air cleaner off, traced wires back to the electric choke, were wet, dried them out, also shot some carb cleaner and cleaned the guts of the carb out. same result. never been a fan of carbs, EFI is far easier. just looking into the bloody thing concerns me.

any ideas out there. just seems strange that the two things have popped up wondering if anyone with more experience than i has come across anything similar?

appreciate, tia.

[Dazza]

Might have blown a fuse from the water shorting out your wires. You need power going to the electric choke so it shuts off. If the choke is stuck on you will have a fast idle and your engine will want to keep running when you turn it off because it is still sucking fuel into the engine and hot carbon on top of your pistons will be enough to make it fire. Normally when you turn your engine off it will stop because the fuel cut solenoid shuts off fuel to the idle circuit of the carby. When your engine is running at 2500RPM it is running on the primary main jet so cutting fuel to the idle circuit will not stop it. Might have to hold one foot on the brake and let the clutch out to stop it until you fix the problem.

[Dazza]

I just had a look at a wiring diagram for an earlier model Hilux and the power to the electric choke comes from the charge wire, so if you have blown the charge fuse or your alternator is not charging then your choke will stay on. The brushes in your alternator might be jammed with mud so they are not contacting properly too, so check them if your charge fuse is ok.

[Grega]

dazza - thanks very much mate - thats very much appreciated.
am brand new to luxes so wanted to put it out there before i started ripping things apart.
and yeah re stalling - thats what i started doing yesterday

[Grega]

yep ; alt only charging at 12v.....IIRC should be at least 14v
buzzed out all the fuses with the multimeter - all good
notice that the alternator is not integrated in the alt but external and up on the side of the engine bay.
will see if i can grab one of those first

[Grega]

all good. replaced and now battery light gone and choke works again.

thanks dazza much appreciated mate.

so for anyone who searches ; toyota hilux battery light on high idle car running on - check for dud alternator - if your alternator is charging at ~12v ; its 1.5v short of where it should be which causes the electric choke not to work!

[Dazza]

Good to hear you got it sorted. Was it the alternator or the regulator that was at fault?

[Grega]

alternator dude. i figured if i was still getting ~12v at the battery during running, the regulator was still working but the alternator was putting out (enough) LOL. replaced that and all good.