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Check Engine Light - codes 221 and 231 HELP! 200 1991

posted by  Jim Holst on  Mon Jul 14 17:16 CST 2003
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last visit: Tue Jan 4 11:05 CST 2011
[RELATED]

You could check the fuel pressure regulator. For example, a split or leak in the vacuum hose would raise the fuel pressure leading to a rich condition. The FPR could also have developed a pin hole leak in the diagphram. Pull the vacuum hose and smell for the presence of fuel.






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