Mechanics

CHATTERING/CLATTERING AND LACK OF POWER

1999 Saturn SW2 • 170,000 miles

My car lacks power on acceleration, at highway speeds and going uphill. It also makes a clattering/chattering sound when under load, but it goes away at speed (running even over flat ground) or if you meter the gas pedal enough and accelerate /very/ carefully and slowly. Fluids are clean and changed regularly, and the car idles very well. What could be causing something like this?
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Jerimiah_wolf
July 28, 2012.




Could have a clogged cat when the car has sat over night and cooled reach under the car and smack the cat with your hand. See if the cat is rattling.

Saturntech9
Jul 28, 2012.


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