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Old 08-23-2005, 06:30 PM
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1988 300E Vacuum

Hello everyone. Am knew here. I have a problem that their is not ahole lot of answers. The economy gauge on the 300E that I have never stayed to the farleft while on park or drive. I have tighten vacuum connections and it gor fixed. Now when I place the car on drive the car the gauge goes almost to the middle. What could that be. Thank you for your help.

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Old 08-24-2005, 08:37 AM
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The economy guage is only a vacuum guage on that car!

The amount of engine vacuum determines the reading that shows on the guage. IN other words the BETTER the engine runs the higher the vacuum!
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  #3  
Old 08-24-2005, 12:23 PM
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Join Date: May 2004
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M.B. Doc,

Could this be an indication that a vacuum leak is being introduced when the trans is shifted to drive?

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