holley electric choke headache

NJB71 · Feb 20, 2009

So I am still trying to work out the kinks on the new install of my 600cfm 4bbl, it has an electric choke(with a red plastic cam)-holley says that the source of power(12v) should come from an open circuit, they suggest the windshield wiper power source, as it is always on when the key is turned. They stress not to source power off coil....reasons for all of this is my choke is staying open even while the engine is warm, holley told me it is cause the source is 7v not the 12v???I followed the lead wire back to the circuit breaker box?anyone install this holley and have this problem, and mind sharing what the solution is?

oleguy74 · Feb 20, 2009

use sta terminal on alt.thats what it is for!!!!.

craigcrawford1 · Feb 20, 2009

Just installed a 470 cfm Truck Avenger carb and had to rotate the choke horn a considerable amount to get it right. I'm not a Holley guru but carried it to one and he set it for me.

Broncobowsher · Feb 20, 2009

oleguy74 said:
use sta terminal on alt.thats what it is for!!!!.

Ding Ding Ding
Winner on post #2

NJB71 · Feb 21, 2009

sorry for my ignorance, what is a sta terminal (i know what the alternator is)-?

Broncobowsher · Feb 21, 2009

On the back of the alternator there is apost marked "S" or "STA"
This is a common point on the stator that makes voltage only while the alternator is spinning. Has no voltage with the key on so the choke won't start opening just because you turn the key on. Engine has to be fired and spinning for this terminal to come alive. It is there just to power electric chokes. When running it is typically just shy of 12V

craigcrawford1 · Feb 21, 2009

When running my "s" terminal is only 8 volts while my "+" terminal on the coil is 11 volts, again this is with engine running, what's the deal. Any suggestions.

Broncobowsher · Feb 21, 2009

craigcrawford said:
When running my "s" terminal is only 8 volts while my "+" terminal on the coil is 11 volts, again this is with engine running, what's the deal. Any suggestions.

That sounds right to me. The way a Stator is wound and wired, 8V is what I would expect.

11V at the coil is about right. When the points are closed the resistor draws the voltage down to about 9 and when the points are open there is no load and you see battery voltage. While running the meter is probably averaging the voltages and giving you the 11V.

So it all sounds right to me.

Viperwolf1 · Feb 21, 2009

If you feel the 8v is not working well enough the green-red wire at the voltage regulator is 12v switched.

craigcrawford1 · Feb 22, 2009

Thanks for the info.

NJB71 · Feb 22, 2009

Ty for the help

holley electric choke headache

NJB71

Bronco Guru

oleguy74

Bronco Guru

craigcrawford1

New Member

Broncobowsher

Total hack

NJB71

Bronco Guru

Broncobowsher

Total hack

craigcrawford1

New Member

Broncobowsher

Total hack

Viperwolf1

electron whisperer

craigcrawford1

New Member

NJB71

Bronco Guru

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