I'm glad I stumbled upon this thread! I'm new to this, not sure exactly what the imrc does, but the cable going into the box is broke, there is a hole where I suppose the electical connection plug should be (the connecting end is just laying next to and under the box), and there is an empty spot where an actuator should go? (the upper left corner of the box) One thing the previous owner told me was he thought there was lag in throttle response and the secondary reed was sticking so he took it out.
My car is a 98 SVT with 2.5L V6 HO engine.
**Update** Ok, I just saw a pic of an imrc, I guess mine is also missing the circuit board, too. I would think that the mileage would suffer. I had a problem with the A/C compressor being locked up and dragging the belt. Finally, after not being able to get the engine turned over to start, I put a shorter belt on it bypassing the compressor and gained about 4 - 5 mpg! I do have another noise now though too. Under acceleration, there is a kind of whining/sucking sound, almost like a vacuum hose being off. I can't find any loose hoses, but it does seem to lack the power it seemed to have before this. Don't know if it is related or not, but I had a pretty hard jolt from road seam going through a construction zone.....grrrr....Illinois roads are horrible!!!
