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engine knock with no codes? 850

posted by  Icelandic on  Sun Jun 29 01:42 CST 2008
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last visit: Tue May 8 06:35 CST 2012
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If your car is a Non-turbo, this is very typical of a failed airbox thermostat that controls the hot or cold air intake. It has probably failed in the hot air intake only. That causes pinging under light loads, steals about 10% of engine power, and makes your mpg 15 to 20% worse. Easy fix. Search on the board.

Fixing the flap valve on the bottom of the airbox in the cold air only position works OK. You may prefer to replace the wax capsule that controls the flap valve though.






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New engine knock with no codes? [850]
posted by  woodsytf subscriber  on Tue Jun 24 02:37 CST 2008 >


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