Recent Annoyances - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-19-2005, 02:14 PM   #1
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The MIL comes on for a trip and a half, then stays off for a day. No hard codes stored. It came on today, and I ran to grab the scan tool to check it out. P0440 - evap systems control. Great fun! Checked the gas cap, and we'll see what happens. Seems to happen more when it'* wet outside.

This on top of the broken supercharger belt, the expensive tensioner for said supercharger belt/main drive belt/idler pulley, one missing chromey lug nut cover thingie, broken reflector on the rear bumper (why do people hit my car when I'm in my assigned parking spot?), and weird surging at quarter throttle on the way home... I'm getting a migraine. Haha.

I heard I should check the backing lines (?) for carbon buildup. Could this have anything to do with evap? I'm guessing no, but better to be sure.

I love my Bonneville! I wonder if she'll fit in the garage for a wax job...

-=goes out to put gas in the Cavalier for the weekend=-
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Old 05-19-2005, 02:40 PM   #2
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Weird surging at 1/4 thorttle can be due to a bad EGR valve. Happened on my 94SE. Trying taking the valve off and cleaning it out with carb cleaner. If the problem goes away for a while then returns you need a new EGR valve..
Ditto for the idle air control valve (but that would show up more at idle than 1/4 throttle).

Rob
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Old 05-19-2005, 07:59 PM   #3
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Default Re: Recent Annoyances

Quote:
Originally Posted by rixak
I heard I should check the backing lines (?) for carbon buildup. Could this have anything to do with evap? I'm guessing no, but better to be sure.
Not sure what the backing lines are, I don't think it'* related to evap. Check for vacum leaks in the evap system if you can like in close proximity to the purge valve, the evap canister etc.
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Old 05-19-2005, 08:49 PM   #4
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My dad was rambling on about the guy who had the car before having the backing lines replaced, whatever they are. I guess something on the supercharger. I've never heard of them until now, but this is my first supercharged engine, too.
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Old 05-19-2005, 09:23 PM   #5
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Backing lines...that'* a good one

I don't think you'll find them on a supercharged engine either. Never heard of them...
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Old 05-19-2005, 09:41 PM   #6
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Good like always being able to get my mom'* gf with the muffler bearings... I bet it is some sort of cruel joke to see if I was paying attention :o
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