Rattle in dashboard

[G69]

For a long time I've had a rattle that I found to be the blower motor box in the trunk. I thought the box was banging against the car but I finally found the cause and fixed it today.

It was the flappers inside the plastic blower box. The foam edging that was used (likely to prevent rattles) to seal the flaps against the plastic passageways was rotted away. The flapper shafts were sliding in the blower box and the box amplified the rattle sound like a stringed instrument sounding box. It was so annoying. It sounded like something was about to fail.

I took the hog ring style keepers off the plastic box halves, removed the blower motor and cut new seals from some rubber I had on hand. I also used some punches and made two rubber washers to keep the linkage from contacting the box.

What a difference! If you have a dashboard rattle you are puzzled with, take off the cardboard blower box cover and see if your flapper rods are moving back and forth axially allowing the flappers to knock the box.

it won't sound like much in the trunk- But in the car it is louder.

Nothing like the sound of open air filters and no rattle/clunking over anything but pristine asphalt.

[lopena]

Thanks for your post. I've also been plagued with a dashboard rattle but never fully addressed it. I'm now motivated to get in there and solve it once and for all.