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Hose in back of engine 850 1994

posted by  someone claiming to be SteveK on  Sun Jan 14 02:38 CST 2007 [RELATED]

Perhaps a stupid question! - I looked under the hood the other day and found the large diameter ribbed silver hose (looks a little like a slinky) had come off. It attaches to the back of the engine about midway down on the firewall side (above the exhaust). I re-attached it the best I could, but what does this do? Is it part of the air intake system? Plus, I don't know how longed it's been detached so what is the impact, if any, of it being disconnected for who knows how long? The CEL has not come on - I'll check codes and see if any have been sent and report back.

Thanks for any insights!

Steve
94 854 NA - 157,000 miles








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    Hose in back of engine 850 1994

    posted by  someone claiming to be fixit2003 on  Sun Jan 14 05:11 CST 2007 [RELATED]

    This is just a source for heated intake air for better initial running in cold weather. If you local temps don't drop too low you're probably not even going to use it very much. You may need a large hose clamp to keep it in place. It just gets worn out after a while.








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    Hose in back of engine 850 1994

    posted by  someone claiming to be 240850 on  Sun Jan 14 05:03 CST 2007 [RELATED]

    uses heat from exhaust to warm air coming into throttle body








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    Hose in back of engine 850 1994

    posted by  buttervolvo on  Sun Jan 14 05:00 CST 2007
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    last visit: Wed Apr 23 14:00 CST 2008
    [RELATED]

    I don't have an 850 motor to look at anymore, but as I recall
    that hose goes from above the exhaust to the back of the
    airbox - this would be a non-turbo car.
    The purpose is to warm-up the intake air in colder weather.
    Since the computer adjusts the air/fuel mixture and uses the
    temperature to determine the mixture, I don't think you
    would notice any difference in engine performance with
    or without the hose. You may see a small change in
    fuel economy/emissions with the hose detached.
    --
    1990 240DL - 204K, 1989 Ranger 241K, Gone but not forgotten 1994 855







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