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1994 Geo Prizm IDEAL SPEED FOR BEST MPG

Tiny
BLUMONSTER
  • MEMBER
  • 1994 GEO PRIZM
Transmission problem
1994 Geo Prizm 4 cyl Front Wheel Drive Automatic 142K miles

Hello,

My Prizm's transmission is A245E, 4 sp with O/D.
What is the ideal speed to get the best MPG?

Thanks.
Sunday, June 13th, 2010 AT 1:48 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
The slower the better :).

But drive the speed limit or just below and avoid rapid starts. Just imagine an egg on the pedal.
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Wednesday, June 23rd, 2010 AT 7:21 AM
Tiny
BLUMONSTER
  • MEMBER
  • 46 POSTS
Thanks.I am getting 35MPG in summer with 1.8lt engine and 4sp transmission.90% on highway at 70-80 mph at 2400-2600RPM. If I go at 65 mph RPM is lower. Is higher RPM a way of saying high fuel consumption?
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Wednesday, August 18th, 2010 AT 5:05 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Keep the revs down, some new cars have a vacuum gauge installed that will help you keep engine within best mileage.
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Thursday, August 19th, 2010 AT 8:34 AM

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