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Author Topic: What is this  (Read 5885 times)

Offline 86c20RN

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What is this
« on: November 10, 2021, 01:57:50 pm »
Hi,
1986 C20 454 auto. What is this?  Located on drivers side of carb.
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Offline wz7u

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Re: What is this
« Reply #1 on: November 10, 2021, 05:22:46 pm »
Idle stop solenoid?
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'79 C20 454/th400 "Pearl"

Offline JohnnyPopper

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Re: What is this
« Reply #2 on: November 10, 2021, 06:30:50 pm »
Does your truck have A/C?
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1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline JohnnyPopper

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Re: What is this
« Reply #3 on: November 10, 2021, 06:31:51 pm »
Maybe a few more pics of surrounding area?
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1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline wz7u

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Re: What is this
« Reply #4 on: November 10, 2021, 06:56:12 pm »
Or a pic of the bracket/area it came from. Was it just laying there next to the carb?
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'79 C20 454/th400 "Pearl"

Offline Mike81K10

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Re: What is this
« Reply #5 on: November 10, 2021, 09:23:18 pm »
Might be A/C compressor switch. Being on the DS of carb is about where the compressor would be if you had an A/C system. Just a guess!
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"Tell me and I forget. Teach me and I remember. Involve me and I learn." -Benjamin Franklin

Online bd

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Re: What is this
« Reply #6 on: November 10, 2021, 10:54:30 pm »
That air temperature switch inserts through the side of the air cleaner housing and is retained by a horseshoe spring clip.  It is part of the AIR emissions package (smog pump) control circuit.  The switch contacts should close above ~60° F.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline wz7u

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Re: What is this
« Reply #7 on: November 11, 2021, 01:05:24 am »
That makes perfect sense, I see the clip groove now.

D'oh!
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'79 C20 454/th400 "Pearl"

Offline 86c20RN

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Re: What is this
« Reply #8 on: November 11, 2021, 04:15:46 pm »
Thanks so much for helping me. I will try to see if I can find the spot it goes in.
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