Jump to content

Diagnostic Code


LJ

Recommended Posts

I have two P0440 codes reading on my 2001 Chevy Blazer. People say it is the gas cap, but i havent had to get gas in like 2 weeks (don't drive often). I had some type of emissions pump go out on me back in december, and that was replaced under warrenty. The P0440 code is Evaporative Emission Control System Malfunction. So, is it my gas cap leaking, or do I probably need another one of those pumps, or something completely different.

Also, lately I have been getting a knocking noise when I start the Blazer up. I only use 89 octane in it, am I still getting engine ping with 89? Jesus this car sucks so far....

Link to comment
Share on other sites

What octane does the owners manual say it requires. When I had the 22RE in my `92 toy the manual said 92+ was required. It did stumble and ping on <92 too. Have you checked for any TSB's related to the P0440 code or related systems?

I'm not fimilar with the engines and related control systems for vehicles running OBD-II systems. I'll help out with what I can though.

Link to comment
Share on other sites

It says 87 Ocatane in the manual, so it's kind of weird. Anthony said he got ping with 87 in his Blazer, but I mean come on... 89!!

My dad said he found that it has a 50,000 mile 5 year emissions warrenty, so I am gonna check up on that.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...