Ailed due to code P0440

Tiny
MARCELLUSBURNS
  • MEMBER
  • 1990 CHEVROLET MONTE CARLO
I had my emission done on my car and it failed due to code P0440.I need to know what to look forward to fixing and were its located.

I have a 1999 Chevrolet Monte Carlo LT, I need to know what is needed to be done to help my car pass it's emission with failing code P0440. My engine is a 3.1L, please help me!
Sunday, September 23rd, 2012 AT 10:33 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You hav eto see why it's leaking vacuum on your evap system. It's a black box iwth a valve on it by the fueltank. The valve may be staying open. But once it 's fixed you'll need to get the code removed. Also for emmission change oil and filter and drive about 10 miels on eway if you can
Was this
answer
helpful?
Yes
No
Sunday, September 23rd, 2012 AT 10:54 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Check for the following:

Cracked or punctured EVAP canister.

Damaged or disconnected source vacuum line, EVAP purge line, vent hose, for fuel tank vapor line.

Poor connection at PCM.

Inspect harness connectors for backed-out terminals, improper mating, broken lock, damaged terminals, or poor wire connection.

Check for intermittent in circuit.

Check for kinked, pinched or plugged vacuum lines to EVAP purge or fuel tank vapor line. Also check for restrictions.

Faulty or damaged evaporative canister.
Was this
answer
helpful?
Yes
No
+1
Sunday, September 23rd, 2012 AT 11:24 PM

Please login or register to post a reply.

Sponsored links