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Starting at low prices, AutoBuffy stocks multiple engine intake manifold runner control sensor connectors from top OE-quality brands. This connector links the manifold runner control (IMRC) sensor to the ECU, transmitting butterfly valve position data that governs airflow and fuel trim. A damaged or corroded connector breaks that signal, triggering misfires, rough idle, and a check engine light that won't clear.
The main buying decision comes down to terminal count, wire gauge compatibility, and whether the connector includes a pre-wired pigtail or is a bare housing. Matching the exact terminal count and lock-tab style to the original connector is critical — an incorrect fit causes a poor seal and repeat failures. OE-style connectors with weather-resistant seals last significantly longer than generic equivalents in high-heat engine bay environments.
| Option | Best for | What you get |
|---|---|---|
| OE-match pigtail connector (pre-wired) | DIYers who want a plug-and-play repair with minimal soldering | Correct terminal count, matching wire colors, weatherproof seal, and 6–12 inches of pre-stripped wire ready to splice |
| Bare connector housing with terminals | Shops or experienced DIYers reusing existing wiring | Housing and loose terminals only — requires terminal crimping tools and knowledge of the original wire gauge |
| Connector repair kit (multi-piece) | Vehicles with corroded terminals AND damaged wiring | Includes housing, terminals, seals, and wire — covers the full connector assembly for a complete restoration |
| OEM dealer connector | Owners who require exact factory fitment and are less price-sensitive | Direct factory replacement with guaranteed fitment, but typically higher cost and longer lead time |
Begin by disconnecting the battery negative terminal, then locate the IMRC sensor on the intake manifold and depress the connector lock tab to unplug it. If using a pigtail connector, strip the existing wires and splice the new connector using heat-shrink butt connectors or solder and adhesive-lined heat shrink for a weatherproof join. Reconnect the battery, clear any stored fault codes with a scan tool, and verify the repair with a short test drive to confirm codes do not return.