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2003 suburban flex fuel 5.3

  • jerry r
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3 years 3 months ago #57004 by jerry r
2003 suburban flex fuel 5.3 was created by jerry r
2003 suburban running rich only in park and neutral has anybody ever ran into this problem? And if so did you find what was the problem?

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3 years 3 months ago #57050 by Hardtopdr2
Replied by Hardtopdr2 on topic 2003 suburban flex fuel 5.3
What's your maf sensors grams per second reading?
The following user(s) said Thank You: Noah

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