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Old 08-13-2020, 08:27 PM   #1
Machh5
 
Drives: Camaro
Join Date: Jun 2020
Location: US
Posts: 34
Purge Valve

For some time I've been having on and off hard starting stumble hesitation and other drivability problems that come and go. Dealer always says no trouble found and I got used driving around the trouble. Finally I got a check engine light and found the purge valve on the intake was stuck open. Changed it and car drives like it should again. Just posted this up so if you are experiencing similar trouble might try replacing the purge valve on the intake manifold before wasting 100's at the dealer just to be told nothing wrong.
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Old 08-14-2020, 12:26 AM   #2
'10CamaroDude
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Drives: 2010 Camaro LS
Join Date: Nov 2019
Location: Pgh
Posts: 742
P0496 is a clear sign you need a solenoid. Or, remember to clip the feed line back
down on the vent line... My car had so many fittings that were not snapped back
down onto the nozzles, it reven wasn't funny. Even the intake hose to the TB was
loose, and allowing air in. ECU was hanging, not clipped in. Vacuum booster pump
line was broken and hidden under the rubber sleeve. Had a fuel leak, broken door
lock, bad rad cap, CAT codes... IT was a total nightmare...
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Old 08-15-2020, 08:55 PM   #3
fhrex

 
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purge valve is a pretty common problem. Glad you got it solved.
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Old 08-31-2020, 09:53 PM   #4
Machh5
 
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Update: For the 1st time in 2 years the car no longer hesitates giving it light throttle. Works like a new car. Valve must have been bad for a very long time. I still can't understand why the dealer couldn't find it. I know you can see the vacuum in the line and pulse rate of the valve. Guess I'll have to find a different service dept, good luck with that! Joe blow down the street is 50 dollars cheaper per hr than the dealer and can't do any worse.
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