04-11-2019, 08:58 AM | #1 |
Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,376
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P0446 mil
I feel like I'm being noisy on the forum since coming back. Sorry. Lots of stuff hitting at once and I have a rare increase in free time which can end any second!
Truck: 1998 Sierra, 5.7L, 90k miles, throwing P0446 code alone. Recent mechanical work done (last 8 months):
Let me say up front:
I'm thankful GM's EVAP systems seem pretty simple. Sadly, I don't have a diagnostic tool that will allow me to watch tank pressure sensor output or jigger any valves so I'm flying blind here. I'm curious how often do the EVAP cans or tank pressure sensors go out? Seems like they're cheap ($120 combined) to replace. Anything else I should be looking at? Which hoses should I absolutely check, other than the two attached to the EVAP can and the ones attached to black intake plastics? Any thoughts on where to start with testing, knowing all I have is a cheap Ancel AD410 ODBII tool?
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If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. |
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