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Terrible Gas Mileage

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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prienzo
Posts: 146
Joined: 21 December 2004
Year and Model: S60R, 2007
Location: New York

Terrible Gas Mileage

Post by prienzo »

I am only getting 16 miles per gallon on my 1993 Volvo 850GLT. It is supposed to get more around the 20-30 range. Can someone tell me what the problem probably is? I am guessing it is an old part that needs to be replaced?

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Tsquared
Posts: 519
Joined: 17 August 2003
Year and Model: 11 C30
Location: Atlanta GA
Has thanked: 1 time

Post by Tsquared »

Is the check engine light on? When was the last time the plugs, wires, distribuator, PCV, fuel filter, and Air Filter has been changed. Has the throttle body ever been cleaned? Are there any loose or rotted vacume lines?
'11 C30 T5

'96 854 - died an early death with 184K miles. Killed by the front end of an LTD on a suicide mission (T-boned and both cars totaled).

prienzo
Posts: 146
Joined: 21 December 2004
Year and Model: S60R, 2007
Location: New York

Post by prienzo »

I brought it to Volvo a little bit ago for a checkup. They replaced from what I know the fuel filter and spart plugs, as well as wires and some fluids. I am not sure what else they replaced.

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