Toyspeed.org.nz Message Board

by **ollieboy** » Mon Nov 12, 2007 2:54 pm

I haven't been driving my mr2 for a while because I was fixing bits and pieces on it. When I started it today the cooling fan, cat converter and charge lights won't go off. I don't think I have driven it since I replaced the cambelt and waterpump so I probably forgot to do something after that which caused this but I'm not sure.

Do I have to reset anything to get the lights to go off? Or is the problem probably a bit worse than that?

Cheers
Ollie

by **Mr Revhead** » Mon Nov 12, 2007 3:27 pm

whats ya volt gauge doing?

by **ollieboy** » Mon Nov 12, 2007 3:30 pm

It sits at just over half way when idling

by **sergei** » Mon Nov 12, 2007 3:38 pm

most likely fried alternator. If so battery will not last very long.

by **ollieboy** » Mon Nov 12, 2007 3:40 pm

Would that cause the cooling fan and cat light to come on too?

by **sergei** » Mon Nov 12, 2007 3:51 pm

Yes, when alternator goes the cat light comes on with battery light. Not sure about cooling fan light never seen one.

by **Mr Revhead** » Mon Nov 12, 2007 3:52 pm

he doesnt mean cooling fan light, he means cooling fan :wink:

by **ollieboy** » Mon Nov 12, 2007 4:01 pm

Ahh, it appears you are right- I went and tested the battery with multimeter and it stayed at the same on and off.

Thats gutting.

by **sergei** » Mon Nov 12, 2007 4:03 pm

Oh I see, then you should look into loose grounds, as the cooling fan circuit is separate from lights. The fan comes on when the thermoswitch opens (thus losing connection with ground)

by **ollieboy** » Mon Nov 12, 2007 4:13 pm

Oh, yeah I was meaning cooling fan light. Like this:

Is there a fuse for the alternator that I can check? Or would it just be a dead alternator?

by **sergei** » Mon Nov 12, 2007 4:27 pm

There is a fuse for alternator, in different cars it has called different, eg ALT.
Look for 7.5A-15A fuse in the engine bay fusebox.

by **Mr Revhead** » Mon Nov 12, 2007 4:46 pm

i dont remember my AW having one of those lights!

by **ollieboy** » Mon Nov 12, 2007 5:00 pm

Yeah? I guess its a kind of odd light now I think about it- I've never seen one before I got the AW.

I found a bown fuse in the engine compartment and changed it, it didn't make a difference so thats quite annoying.

by **mr30%jr** » Mon Nov 12, 2007 6:22 pm

it just warns when the engine bay temp is high and fan hasnt come on for whateva reason

BGB says only drive at 60ks lol :lol:

there cool be various reasons usually fried alternator but the regulator plug could be out or the alternator feed could be loose

by **ollieboy** » Mon Nov 12, 2007 8:08 pm

I'm kind of thinking it must be a loose connection- it wouldn't just stop working after not being used would it?

by **Mr Revhead** » Mon Nov 12, 2007 8:09 pm

seeing as you have just been playing aound in that area... it does seem likely you stuffed something up

by **ollieboy** » Mon Nov 12, 2007 8:11 pm

More than likely :lol:

I'll have another look tomorrow and see if anything is loose.

by **matt dunn** » Mon Nov 12, 2007 10:37 pm

Dont discount the fact that the alt could be stuffed.

Unplug the 3 pin plug at the alt and test the 3 pins,

With the key on and it unplugged you should get 12V at all the pins with a multimeter,
or
power at two with a test light and a faint glow on the other.

Matt

by **ollieboy** » Mon Nov 12, 2007 10:39 pm

Is that with the key on but the car not actually running?

by **matt dunn** » Mon Nov 12, 2007 10:51 pm

ollieboy wrote:Is that with the key on but the car not actually running?

Yes.

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