Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 12/2020 900 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Poor mileage, what else to check? 900 1993

posted by  cvandor on  Sat Mar 8 15:52 CST 2008
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Mar 10 18:45 CST 2013
[RELATED]

Hello,

I have a '93 945T that I drive very easily - 60-65 on the freeway, never get into boost, light acceleration, lots of coasting and planning ahead, but I still only manage 20.5 mpg! My 245 with the same basic engine got ~24 mpg (only difference is the 245 had a manual trans, but the 945 auto trans has a longer overdrive).
I have replaced every possible tuneup part (plugs, wires, cap, rotor, oil+filter, k&n air filter), including the oxygen sensor. I was really hoping for an improvement after replacing the o2 sensor, but it was only 1/2 mpg better.
The tailpipe looks black, like it's too rich, but AFAIK there is nothing to adjust on the EFI system. The only other thing I can think of is the coolant temp sensor for the EFI. Does anyoe have specs on this? Any other ideas?
Oh, the engine has good compression and does not appear to burn oil, the brakes are not dragging, and tires have a few psi over suggested pressure.
Thanks,

Csaba
'93 945T
'84 245Ti, now sold






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Poor mileage, what else to check? [900][1993]
posted by  cvandor  on Sat Mar 8 15:52 CST 2008 >


<< < > >>



©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.