OK, I haven't been able to figure out why I don't have 12 volts at my choke. It's my understanding it's supposed to be there all the time. What would happen if you just ran a wire from ignition to the choke??

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85T/A 305/QJ work in progress.

 

I assume you mean "all the time the ignition is on". That's correct, at any rate.

There is a relay in there. That could be your problem. Running a wire directly would bypass that relay.



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What's the choke light doing?

 

Yep, only when the ignition is on. The choke light stays on all the time. I thought it was a charging problem but I'm on my third alternator since it's come on a few years ago so I think I'm OK there.

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85T/A 305/QJ work in progress.

 

The choke wire should have 12v only when the car is running. If the choke light is staying on all the time, check the choke heater relay. If it dims or flickers when the car is running, check the choke heater fuse.

 

where is the choke heater fuse? where is the choke heater relay? this choke is so difficult to get right after its gone astray...

 

The choke heater fuse is labelled C-H in the fuse block. The choke heater relay is in the convenience center.

 

I'm feeling kinda silly. Where's the convenience center?


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85T/A 305/QJ work in progress.

 

Despite its name, it's located in the worst possible spot. It's under the dash in the area of the driver's knee.

 

Well, the fuse was bad and the choke light went out when I replaced it. I still don't have 12 volts at the choke though. I do have .15 volts if that means anything. Do I need to pull the bottom pannel to get to the convenience center??

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85T/A 305/QJ work in progress.

 

Was the car running when you measured it?

 

Yep, sure was. Not very good mind you, but it was running!

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85T/A 305/QJ work in progress.

 

Did you have a good ground source when you measured the voltage at the choke plug? You DON'T want to use the choke's metal tab as your ground source becuase the choke element isn't zero-resistance-to-ground. I usually wire brush one of the forward carb bolts until it's shiny metal and use that as my ground source.

You're getting closer, I can feel it! Not may parts left if the choke system now.

BTW- I found that one of the wires that goes to the windshield wiper motor is an adequate source of ignition-switched 12V power. The choke draws almost no amps so tapping into it and running a fresh wire over to the choke is one way of fixing this problem. I'd only do it as a last resort, however, like if the stock wiring or relay connector is seriously screwed up and beyond repair.