Key Features
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Direct OEM fit for Quadrajet carbs from 1985–1987 (GM #17110996)
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Vacuum-operated mixture control ensures lean idle during warm-up, then enriches mixture as the engine heats
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Built to spec, using quality diaphragm and return spring for consistent performance
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Made in the USA, tested and assembled to match GM standards
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In-stock availability: ships quickly unless otherwise noted on the page
Frequently Asked Questions
1. What carburetors work with this solenoid?
This 1209-1 solenoid fits Rochester Quadrajet 4-barrel carburetors used on certain GM vehicles from 1985 through 1987, carrying GM part number 17110996. Match the color of old part.
2. What does this solenoid do?
It controls the cold-start mixture by holding the power piston down during warm-up. As the engine reaches operating temperature, it releases, allowing the mixture to enrich smoothly without bogging or hesitation.
3. How can I test if the solenoid is working?
Apply 12?V to the connector—you should hear a distinct "click." Internally, it shifts diaphragm position. No click indicates it needs replacement .
4. Is this a direct replacement for GM part #17110996?
Yes—it's an exact-fit, aftermarket equivalent built to GM specifications and engineered for plug-and-play installation .
5. Is this brand new or refurbished?
This is a brand-new, current-production unit—freshly built in the U.S.A., not a remanufactured or used part.
6. Will this fix cold-start or idle issues?
Yes. A failing mixture control solenoid often leads to hard hot-starts, rough idle, or excessive smoke during warm-up. A working solenoid restores proper mixture control.
7. Does this solenoid require vacuum or electrical connections?
It uses vacuum to modulate mixture and requires 12?V electrical feed during warm-up only—it isn’t active once the engine reaches operating temperature.
8. What if mine doesn’t click when powered?
A lack of a click indicates a faulty solenoid or poor electrical connection. Replace it and ensure the wiring tab is clean and tight.
9. Is this part in stock?
Yes—if the page shows "In Stock," it's available for immediate shipment. If not, you can join the waiting list for restock notifications
10. How soon will it ship?
Orders placed before 12 PM PST (Mon–Fri) ship the same day, unless marked "Out of Stock".
11. How much does shipping cost?
Shipping cost is calculated based on your address and the selected method at checkout. No hidden fees.
