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Car has the P0440 code. What is the most likely cause?

Tiny
MATT MILICIC
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
  • 180,000 MILES
I have been struggling with getting this car inspected. Started off with an EGR code which has been repaired. Now it is showing only the P0440 code but it registers tice after the EVAP monitor is satisfied. The shop has had it for a couple of weeks but has not cleared this issue up and they have not shared what they actually did on this code with me.
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Tuesday, December 27th, 2011 AT 9:42 PM

6 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Shop maynot have equipment to perform testing. Need EVAP pressure and purge station and Ultrasonic leak detector
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Tuesday, December 27th, 2011 AT 9:48 PM
Tiny
MATT MILICIC
  • MEMBER
  • 12 POSTS
Where can I find a diagram showing the location of the EVAP system parts?
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Wednesday, December 28th, 2011 AT 1:35 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Can only find generic one 440 is LARGE leak so smoke test should show problem. Has gas cap and filler neck been checked out?
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Wednesday, December 28th, 2011 AT 9:33 PM
Tiny
MATT MILICIC
  • MEMBER
  • 12 POSTS
I replaced the gas cap already. What do I need to look for on the filler neck? How do I do the smoke test?
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Wednesday, December 28th, 2011 AT 9:43 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Find shop with equipment test can be done for @$50-80
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Wednesday, December 28th, 2011 AT 9:44 PM
Tiny
MATT MILICIC
  • MEMBER
  • 12 POSTS
Can I test the filler neck out of the vehicle and what am I looking for to see if it is bad?
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Tuesday, January 10th, 2012 AT 3:07 PM

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