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Choke problems


d-dog

New Member
Joined
Nov 28, 2007
Messages
3
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0
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Vehicle Year
1985
Make / Model
Ford
Transmission
Manual
I'm trying to help my son with his B2 choke problem. The choke fails to open - at least within a reasonable time. The linkage is free and I checked the voltage going to the choke bi-metallic spring, but can't find what that should be. It's difficult to read on a digital multimeter, but it looks like it's cycling between 13.x and 0 volts every second or so. Does anyone know if that's correct (the cycling)? If not does anyone know what the correct voltage should be? If it's supposed to be a constant 12v, I imagine I could simply run a wire from anything that's hot when the ignition is on.
Thanx for any help out there.
Dog
 


Totalled

Totalled

New Member
Law Enforcement
V8 Engine Swap
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Aug 8, 2007
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795
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Location
Tumwater, Wa
Vehicle Year
1985
Make / Model
Ford
Engine Size
8 rabid gophers
Transmission
Automatic
They often do not work properly. The computer controls it, but it's fails.

Run a hot wire from the choke to the stator terminal of the alternator. It will only send voltage to the choke when the engine is running, and at less that battery voltage that the ford choke requires. That's how the electric choke/duraspark rigs were set up.
 

d-dog

New Member
Joined
Nov 28, 2007
Messages
3
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0
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Vehicle Year
1985
Make / Model
Ford
Transmission
Manual
OK, thanx Totalled. Sounds like I may have 2 problems going on. From your answer, I'm assuming that cycling voltage isn't right and is probably the fault of the ignition module/computer. I'll try running the new wire like you suggest, but I think the heating element may also be bad, in that I tried running a line directly from the battery and had no reaction. The wire didn't heat and the choke didn't move. I'm a bit confused, because I checked the resistance between that electrical terminal that goes into the choke spring and got .04 ohms resistance, which I thought may not be bad. But when I run the wire from the hot side of the battery, I get nothing. That, in theory should be the same as running it to ground!?
BTW, I'm also in WA - on the east side in Pasco. That Bronco was mine for almost 20 years, till I gave it to my son. It's seen days at Pismo beach, Anza Barrego desert, Mohave desert, Moab and north Texas. Now it's his turn.
Thanx, later,
Dog
 
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