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How much voltage the choke thermostat should be?

Tiny
BIGBLACKBOI9
  • MEMBER
  • 1988 HONDA ACCORD
  • 4 CYL
  • 2WD
  • MANUAL
  • 230,000 MILES
Currently the car idles at 2,000 RPMs but when I manually use the choke it lowers to 900 RPMs. So, I was just wondering how much voltage the choke thermostat should be at.
Monday, January 30th, 2023 AT 12:49 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,654 POSTS
With the key on there should be 12 volts at the choke heater coil. This guide can help you test the voltage:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please let us know if you need anything else to get the problem fixed.
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Monday, January 30th, 2023 AT 5:31 PM
Tiny
BIGBLACKBOI9
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Yea that's what I thought. I already checked it, and it was below 1 volt. So, what should I do because it's a new carburetor?
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Monday, January 30th, 2023 AT 6:48 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,654 POSTS
Unplug the wire to see if it goes to 12 volts. If so, the choke is shorted in the new carburetor or the EFE relay or fuses has corrosion on it. Check out the images (below). Please let us know what happens.
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Tuesday, January 31st, 2023 AT 10:39 AM
Tiny
BIGBLACKBOI9
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Yes the efe heater relay is corroded. What should I do?
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Tuesday, February 7th, 2023 AT 10:13 AM
Tiny
KEN L
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  • 48,654 POSTS
You are going to need to get a new one, fix the old one or find a used one.
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Tuesday, February 7th, 2023 AT 2:39 PM
Tiny
BIGBLACKBOI9
  • MEMBER
  • 33 POSTS
I'm finding trouble finding one on the internet. Do I just have to find one in another car or?
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Tuesday, February 7th, 2023 AT 6:03 PM
Tiny
KEN L
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  • 48,654 POSTS
Yep, the part is obsolete so wherever you can find one. I would try auto dismantlers.
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Thursday, February 9th, 2023 AT 9:28 AM

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