Volvo AWD 850 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 1/2002 850 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Sudden drop in mileage, rough running 850 1994

posted by  tina on  Mon Dec 13 12:59 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Nov 24 09:34 CST 2011
[RELATED]

So, about 2 months ago my 94 wagon started feeling a bit rough during acceleration and idling in drive - just perceptable to me as the daily driver not to passengers. Just a bit more vibration and engine noise. Average mileage dropped from 22 city driving to 18 mpg with the same daily route and use of car!

Thinking I needed to do a tune-up I replaced the air filter, changed the spark plugs, checked ignition rotor (new 6 months ago and still fine) and plug wires (new last summer and still fine). Mileage climbed a little bit after this work but still below what it was before - now about 18.5 mpg.

Recent work: EGR & throttle cleaned in June, PNP switch replaced in February, new fuel pump in June.

Is there something I am missing that I can do to improve running?

THanks for your insight!






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Sudden drop in mileage, rough running [850][1994]
posted by  tina  on Mon Dec 13 12:59 CST 2004 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.