Air-intake pump 1997 850 Volvos

Oct 25, 2006 3 Replies

Hello,



My Volvo mechanic found that the Air-intake pump and valve in my 1997



850 Volvo model was broken; which has noticably decreased fuel economy, and hence 'the check-engine' light ocassionally comes on.

The cost to replace the pump and valve is over $600. Are there (much less-expensive) air-intake systems (non factory) that would work on



1997 850 model Volvos? Are such air-intake systems simplified for do-it-yourself installations?

Thank-you



How much has this decreased fuel economy? How many more years are you going to own this car?

If you normally get 20mpg then your cost per mile is 11.7 cents, if this has reduced mpg to 18 mpg, your cost per mile has increased

1.3 cents to 13.0 cents, that will take 78,000 more miles on this car before that $600 is paid for.

You might consider calling around to wrecking yards if you really feel you need to get this done.

Ted

There's absolutely no reason the dead air pump would decrease mileage. The only symptom would be the check engine light. It's only purpose is to reduce emissions after cold start, it only works the first couple of minutes on a cold engine.

If you have a mileage reduction, it's caused by something else.

These are part of the emissions control system and are there to provide extra air into the exhaust stream on a cold start to burn off excess HC. The air injection system normally doesn't effect fuel economy.

I don't think there are any direct fit aftermarket replacements. The valve you should replace with a new unit, but you might have some luck getting a used air pump from a wrecking yard. A wrecking yard should be able to look up the air pump and see what other years and models used the same one. It is electric and is located near the battery.

John

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