Ran codes... help?

bluebirdsc

Registered User
i ran codes on my 1994 thunderbird sc, and i got about 3 codes but i couldent make them all out but this was one i got. 538... Insufficient RPM change during KOER Dynamic Response Test/invalid cylinder balance test due to throttle movement durring test... and while i was testing i was looking at the engine while it started and i noticed it makes blurb sounds and the engine shakes every once and a while, and the exsaust also makes blurb sounds durring idle, and my friend said it sounded like a misfire, how do i fix these problems???
 
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