ACDelco 217 3349 Original Equipment Injection Review

Perfect OEM Compatibility. Works great. The old valve is defective. This will not maintain stable idle/neutral speeds (Colorado with stock transmission). Reinstallation fixed everything. Highly recommended.

This item is an exact part from GM but much cheaper. ZZPerformance.com and bought a 6-pin to 8-pin cable adapter (depending on the model year, eg: 2006 6-pin throttle body, 2008 8-pin throttle body) on eBay. My car is a 2008 Chevy Cobalt Special Edition with a 2.2 liter Ecotec I4 engine in Summit White with racing stripes.

For over a year now I have been experiencing a situation where the engine RPM drops too quickly when coasting e.g. when engaging the clutch to brake, sometimes, usually during a stop . signal or stop during warm-up, the idle speed drops to 500 rpm for about a second and then quickly rises back to 750 rpm. This issue resulted in the check engine lights or codes not being stored, but I knew from experience that this type of idling is not normal considering this truck has clocked up 66,000 miles…