Idle Stop Solenoid

Gotta love that wiring . . .
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Zulu

Idle Stop Solenoid

Post by Zulu »

I have a couple questions regarding this little guy:

What exactly does it do?

Where is it supposed to get power from?

On wiring diagrams it goes to the ignition thermostatic switch, which I don't need anymore as I have electronic ignition. So do I need to jumper the two connection together? Do I need the thermostatic switch for the solenoid? I am very confused right now. Any help would be appreciated.
vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Idle Stop Solenoid

Post by vandor »

The idle solenoid opens the idle passage when the key is on. It prevents 'run-on' or 'dieseling' after the engine is shut off.
You do not have to have the thermostatic switch plugged in. Likely the lead for the idle solenoid goes to the switch's connector, and then form the same connector to a power source. So the same wire powered both the switch and the solenoid.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
dmwhiteoak
Posts: 1088
Joined: Mon Aug 15, 2011 1:12 pm
Your car is a: 1972 Fiat 124 spider
Location: White Oak Tx

Re: Idle Stop Solenoid

Post by dmwhiteoak »

Find a power source that is only hot when ignition is on and use it . Mine was not connected when I brought mine home but I had several power sources to choose from that I had no idea where they went. Works like a champ now.
Dennis Modisette

1972 124 Spider
2003 Chevrolet Z71
2007 GMC Yucon
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