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-   -   1995 s500 mpg guage high reading (http://www.peachparts.com/shopforum/tech-help/106624-1995-s500-mpg-guage-high-reading.html)

gcg 10-27-2004 10:50 PM

1995 s500 mpg guage high reading
 
My mpg guage pegs to the maximum reading when the car is standing still. It seems to me that it should indicate a zero value. When the car is in motion, the gauge shows an intermediate reading, but i question it's accuracy. Is there anything wrong with this observed behavior, and what is the cause of the problem?

JimF 10-28-2004 12:50 AM

Well, it doesn't "peg" . . .
 
it goes to the resting position which is something around 40mpg!! Wouldn't that be nice. Never happen. . . . sadly :(

But that gauge is a measure of the car's vacuum, so the more vacuum the better the gas milage. Conversely, less vacuum means that "you" have got the pedal-to-the-metal, so less gas milage. It's all relative and given the way it is setup, it's correct.

You're "solution" is the one that's wrong; if it went to "0", then you REALLY wouldn't be happy now that you know HOW it operates.


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