air preheat thermostat

  • Thread starter Thread starter Michael Rose
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Michael Rose

My story starts with a bad AMM....second one in 2 years on my 93 940 turbo
wagon.....parts guys sold me a air preheat thermostat along with the rebuild
AMM...told me that if I didn't buy it, it would void the
warranty....well...I can't find the thing on my air box...so did they
install one in the 940s?....Thanks
 
Michael said:
My story starts with a bad AMM....second one in 2 years on my 93 940 turbo
wagon.....parts guys sold me a air preheat thermostat along with the rebuild
AMM...told me that if I didn't buy it, it would void the
warranty....well...I can't find the thing on my air box...so did they
install one in the 940s?....Thanks
Click to expand...


Should be inside the airbox, it operates a flapper on the air input to
that metal hose over to the exhaust manifold. In a mild climate you can
just remove that hose and no longer risk killing expensive AMMs, the
preheat system is worthless, especially on a turbo where you cool the
air right back down again with the intercooler.
 
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