Question about 2006 Pontiac Vibe
9000 miles ago they replaced the canister..check engine light back on and they say canister again
What is the code. p0456 p0457, you need more info and better mechanic. could be a loose or broken hose, a bad gas cap. or what tech meas the most when the read a vacuum leak, in fact the vehicle has a bad purge valve, in other words, no vacuum. get back to me with a code before you pay a penny.
Posted on Apr 14, 2014
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Posted on Jan 02, 2017
If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
Posted on Oct 17, 2008
SOURCE: I have a 2002 Pontiac
I don't believe that your MAF has ever been the root cause of the problem to begin with. They don't often fail on their own and especially after only a month. If it is due to an electronic problem then it will be instant. The only other cause is the MAF getting so coated with debris or chemicals that it makes the diodes break. It can get dirty from ineffective air filtering or from getting carbon buildup. Seeing that you needed to have the EGR valve replaced, carbon buildup could be a likely cause. It is a common cause for failure of an EGR valve and simply replacing it won't clean up what's left elsewhere in the system like the throttle body...right where your MAF is mounted.
Here is what I want you to do with your car. Do not take it back to the same garage for any of this, you can easily do most of it yourself. They apparently don't know or don't care anyway, get it out of there or give them specific written instructions what to do with it.
Remove the air intake box and throttle body inlet duct and clean it. Remove throttle body. Clean the throttle intake plenum and bore inlet until absolutely spotless. Replace throttle body gasket with an oil-impregnated one that is trimmed back to fit slightly larger than the throttle opening and DOES NOT have the cutouts for the coolant paths. Next, remove the MAF. Clean it with isopropyl alcohol, WITHOUT pressure such as with an aerosol can. It will bend or break the diodes. Allow to dry.
Remove the IAC valve from the throttle body. Clean it, replace the gasket if worn. Use a toothbrush if it's very dirty, I suspect it is. Do the same thing to the mounting hole for the IAC valve. Clean the throttle body bore and plate, from both ends until spotless.
Mount throttle body back on to new gasket. Replace PCV valve.
Replace all spark plugs with copper core Autolite 605's. They are one heat range cooler than stock; it will help your GTP run better especially on those hot days.
Then run only premium fuel in it. I recommend Shell 93. The brand is recommended; high octane is required.
Posted on Apr 23, 2011
SOURCE: On my 2002 Pontiac Gran
for the fuel problem its the float in the tank. it may have a whole in it or just worn out. as for the vapor canaster, it would be a lot cheaper if you can find a good one at a wrecking yard. every penny counts now days. have a good day !
Posted on May 10, 2011
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