rochester Electric connector question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

twomacs4 · 09-02-2002, 11:39 PM

Have 85 C10 w/ 305

Rochester Q-Jet has an electric connection that operates a solenoid.

Anyone know what this is for and how it is wired?

twomacs4 · 09-02-2002, 11:59 PM

It is located on the top of the carb...

*Zkast* · 09-03-2002, 08:20 PM

That would be the Mixture Control Soleniod. The ECM controls the dwell of the soleniod which leans or richens the idle circuit.

If someone has done a carb swap, you could have an earlier model which would still have the connector in the same area but it controls a vent soleniod only.

twomacs4 · 09-04-2002, 10:25 AM

Swapped to older carb and works great.

09-02-2002, 11:39 PM	#1
twomacs4 Registered User Join Date: Mar 2002 Location: Flower Mound, TX, USA Posts: 44	rochester Electric connector question Have 85 C10 w/ 305 Rochester Q-Jet has an electric connection that operates a solenoid. Anyone know what this is for and how it is wired?

09-02-2002, 11:59 PM	#2
twomacs4 Registered User Join Date: Mar 2002 Location: Flower Mound, TX, USA Posts: 44	Clarification It is located on the top of the carb...

09-04-2002, 10:25 AM	#4
twomacs4 Registered User Join Date: Mar 2002 Location: Flower Mound, TX, USA Posts: 44	Swapped to older carb Swapped to older carb and works great.

09-03-2002, 08:20 PM	#3
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	That would be the Mixture Control Soleniod. The ECM controls the dwell of the soleniod which leans or richens the idle circuit. If someone has done a carb swap, you could have an earlier model which would still have the connector in the same area but it controls a vent soleniod only.



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