Emissions problem - Chevy Impala Forums
Autocare and Maintenance Auto detailing, care, and maintenance.

User Tag List

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 06-06-2019 Thread Starter
Junior Member
Countryboi's Avatar
Join Date: Jun 2019
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Emissions problem

I have a 07 impala ss. It’s sputtering when at low speeds and on acceleration but when you give it the gas it don’t sputter while your gunning it. It’s throwing 3 codes, p0446, p0036 and p0420. I’ve replaced the vent control canister and also has the catalyst converter replaced and reset the engine light and it’s also hard to fill up with gas. It keeps shutting off like it’s full when you know it’s not so you have to pump gas really slow. Any ideas ? My next thought is the purge solenoid
Countryboi is offline  
Sponsored Links
post #2 of (permalink) Old 06-07-2019
Senior Member
cj1's Avatar
Join Date: Apr 2014
Posts: 308
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Thanks: 1
Thanked 43 Times in 43 Posts
P0036 may be related to P0420.
Without 02 sensor operating properly, cat efficiency data can be off.

P0446 not venting properly can cause hard to fill up with gas.
cj1 is offline  
post #3 of (permalink) Old 06-07-2019
Senior Member
sheila's Avatar
Join Date: Sep 2013
Posts: 1,640
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 171 Post(s)
Thanks: 311
Thanked 308 Times in 243 Posts
Did you replace the purge valve solenoid (underhood) or the vent valve solenoid (lr)?
sheila is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome