After 100K? 200K?

I've put two in my '84 in the last three years. Bad rebuilds, or something else going on?

Bad airbox thermostat, perhaps?

The only failure I have had of an AMM has been due to a failed airbox thermostat. When I learned that the thermostat failure allows the pre-heated air into the AMM all the time rather than just in cold weather, I blocked the airbox flap shut with a piece of wood, or - time permitting - got a new thermostat.

Good Luck,

Bob

:>)

> I blocked the airbox flap shut with a piece of wood, or -

> time permitting -

From Home Depot, or similar....

1.5" diameter rubber end cap w/clamp from the plumbing department, about $4.44

It is a firm fit over the inlet of the airbox where that hot har hose used to come in. Tighten the band clamp, and you're set.

I used a plastic tie strip to keep the flap inside the air box 'shut' to any air flow from the now defunct hot air hookup. I have a 740 Turbo and the hot air section is a complete waste of time, since the car has an intercooler.

I took out the assembly of paddles inside my air box and neatly duct taped it shut. I have a question though. The hot air metal hose was quite corroded and broken so I removed that, and now there is just a opening up at the exhaust manifold I guess it is. If I took it in to get a emissions test, would I fail? I should block that off but I'm not sure what would be the best way. I would rather not buy another $20 hose that would just be blocked off at the air box anyway.

I would duct tape it off there too but I'm sure that gets pretty hot.