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Low idle

Tiny
CMASTALSKI
  • MEMBER
  • 1985 NISSAN 300ZX
  • 3.0L
  • V6
  • 2WD
  • MANUAL
  • 130,000 MILES
Cold start sensor does not work. Cranks up but idles low like no choke.
Friday, December 22nd, 2017 AT 8:36 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good Morning my name is Roy and I will assist.

There is a coolant sensor that sends the ECM a signal of the engine temperature. That will activate an air bypass valve to slightly elevate the idle when the engine is cold. When the engine warms up, the valve will close completely.

Has anyone checked these?

Roy
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Saturday, December 23rd, 2017 AT 4:41 AM
Tiny
CMASTALSKI
  • MEMBER
  • 3 POSTS
I have not. Do you know where that is located at?
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Saturday, December 23rd, 2017 AT 4:58 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I attached a picture for you with the air regulator as well.

Roy
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Saturday, December 23rd, 2017 AT 5:06 AM
Tiny
CMASTALSKI
  • MEMBER
  • 3 POSTS
Looks like fun. Lol. Thanks for your help and have a Merry Christmas.
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Saturday, December 23rd, 2017 AT 5:34 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome. Same to you and yours.

Roy
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Saturday, December 23rd, 2017 AT 5:36 AM

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