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On 26 Feb 98 at 19:54, Patty and Bob Couse-Baker wrote: > 1. Is there any way to "test" heater boxes, short of asphyxiating one's > self? Mine smell kind-of funny, but blow hot air. The center steel tube on these is so thick that they almost never perforate. > 2. Can a bad exhaust system contribute a funny smell from the heater? I > did the John Muhr test . shove a rag against the exhaust while the > engine is running, and I heard "pist-pist-pist" from under the car, > indicating an exhaust leak someplace in the system. Oh, perhaps I > forgot to mention the oil cooler leaks, so like the whole engine is > covered with oil (perhaps negating the hole notion of fresh-air hose for > the heaters). The most common problem here is bad seals where the muffler connects to the rear ends of the lower heat hxchangers. A little exhaust leaking out here can spray back into the "heated fresh air" chamber of the heat exchanger and thus leak into the passenger compartment. This is specially a problem with header exhausts because the fit of the pipes is poor. The fact that the heat exchanger pipe ODs have necked down from rust just makes it worse. > 3. Is there anyone who refurbishes heater boxes? Don't know, would like to find a source. > 4. Do all VW heaters smell funny? No, properly installed, they give good heat if everything is in good condition, but this is seldom the case any more. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA *******************************