PO155 2002 Chevy S10 4x4 4.3L 176,000 miles

Boomer

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Joined
Mar 14, 2007
Messages
330
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16

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Boomer

Hero Member
Joined
Mar 14, 2007
Messages
330
Points
16
Ok, I took a break from this for a bit. I am now ready to get back at it. I cleared the codes the other day. It only takes a drive or two to come back. I now see all kinds of codes. The codes repeated. I have a new mass air flow sensor and new 02 sensors. I've done the checks I've previously mentioned. I still experience no driveability problems. No increased fuel consumption. The truck thankfully runs fine. I just need a solid plan to attack it. Kinda like a troubleshooting tree.
 

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