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2007 HHR check engine

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Old Sep 26, 2024 | 09:58 AM
  #1  
Songster's Avatar
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From: Upstate NY
2007 HHR check engine

Hello all. I have a 2007 HHR check engine replaced gas cap but the check engine vines back on after I cheat it and a warning light and bell says Check Gas cap. Any ideas ? Thank you
Old Sep 26, 2024 | 11:28 AM
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Welcome to the site, you state you replaced the gas cap, what brand and what part number? Did you inspect the filler neck for corrosion? What exact code is it that shows up?
Old Sep 26, 2024 | 12:20 PM
  #3  
greg8453's Avatar
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From: Davison MI
Gas cap solves a large leak maybe 1 in 10 times.
Need to charge the system to locate the leak.
Old Sep 26, 2024 | 01:04 PM
  #4  
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Moved, thanks FMG
Old Sep 26, 2024 | 02:12 PM
  #5  
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Some aftermarket caps don’t fit well.
Old Sep 26, 2024 | 02:39 PM
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Need to post the actual CEL code number.
Old Sep 26, 2024 | 03:29 PM
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As I asked in post#2
Old Sep 27, 2024 | 10:53 AM
  #8  
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From: Upstate NY
Po442$07e8

Originally Posted by Oldblue
Welcome to the site, you state you replaced the gas cap, what brand and what part number? Did you inspect the filler neck for corrosion? What exact code is it that shows up?
code po442$07e8
Old Sep 27, 2024 | 12:00 PM
  #9  
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https://www.obd-codes.com/p0442

Next I wiuld test the EVAP vent valve under the hood try to blow air through it, it should be closed, if you can blow thru it then replace the valve
Old Sep 27, 2024 | 12:24 PM
  #10  
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From: Upstate NY
Hhr vent valve

Originally Posted by Oldblue
https://www.obd-codes.com/p0442

Next I wiuld test the EVAP vent valve under the hood try to blow air through it, it should be closed, if you can blow thru it then replace the valve
will try that next thank you



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