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Need Help With Engine Surging/Looping.....
Thats what I was thinking, with the one thing throwing if off. I was leaning towards something with an air/fuel mixture problem. I have had the truck 5 years and had the trans rebuilt twice, the last time about 9 months ago. The 171 and 174 codes indicate its running lean in Bank 1 and...- dorito23
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- Forum: General Discussion
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Need Help With Engine Surging/Looping.....
1999 Tahoe LT 5.7 2 Door 4X4 Codes: P0440 x2 P0171 P0174 I'm having a bit of a problem and I am hoping someone could point me in the right direction. While I'm driving, the engine will loop or surge (whichever you prefer) about 100 RPMs every 2-3 seconds. Up then down, up then down...- dorito23
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- Replies: 8
- Forum: General Discussion
