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decrease in gas mileage from 25MPG to 20MPG 200 1989

posted by  southern fried volvo on  Mon Jul 29 11:42 CST 2002
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last visit: Thu Dec 19 00:38 CST 2013
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How does it idle? As smoothe as before, or a little rougher?

- Clean the throttle body if you haven't done it recently. Remove the body, give it a thorough cleaning, and replace the gasket. The TB has a couple of tiny air holes inside the "throat". Make sure these are not clogged.

- Next, clean the idle air control valve. This can also cause rough idle and poor mileage. When coasting, the throttle body closes shut and the IAC valve takes over. Make sure it is functioning OK!!!

The 700/900 FAQ contains good information on how to do both jobs! Hope this helps. Let us know!!!

[[ southern fried volvo '91 240 114k mi, 88 toyo camry v6le 234k mi ]]






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New decrease in gas mileage from 25MPG to 20MPG [200][1989]
posted by  Garge  on Mon Jul 29 04:25 CST 2002 >


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