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Old 06-22-2010, 06:33 PM
182Ranger 182Ranger is offline
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Default Spark knock

I've been having some trouble with my '99 Ranger, 3.0 liter. It knocks quite bad when giving it gas to accelerate. I was told to check my EGR valve, but how do I test this? I looked at it, but I only seen 1 vacuum hose. The description says there is two? Also, would an IAC cause this by any chance? Thanks.
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