Help! Trouble Code P0442: Evaporative Emission Control - F150online Forums

Go Back  F150online Forums > Powertrain & Mechanical > V8 Engines
Help! Trouble Code P0442: Evaporative Emission Control > Help! Trouble Code P0442: Evaporative Emission Control
Notices

Help! Trouble Code P0442: Evaporative Emission Control

Reply

 
 
  #1  
Old 07-16-2002, 07:22 PM
Senior Member
Thread Starter
Join Date: Jun 2000
Location: Anchorage
Posts: 1,167
Exclamation Help! Trouble Code P0442: Evaporative Emission Control

This morning after about 5 minutes of driving my truck started to stumble badly. During normal driving (coasting with the foot steady) while going up a incline, it will stumble like it's missing. At WOT, it seems to be fine. It also has a bad idle that comes and goes every few seconds, even in PARK. I scanned the computer and came up with a code: P0442 Evaporative Emmission Control System Leak Detected (Small Leak). I swapped gas caps but that didn't work. Any ideas? Last night, I did fill up the tank with gas, so could I have bad gas?
 
Reply With Quote
  #2  
Old 07-16-2002, 08:48 PM
WLF
WLF is offline
Registered User
Join Date: May 2000
Posts: 1,961
Mine showed this code and it was a small vacume leak over behind the battery (in front of the computer). My be it effected the egr valve. Try checking both.
 
Reply With Quote
  #3  
Old 08-22-2004, 10:07 AM
Junior Member
Join Date: Aug 2004
Location: Massachusetts
Posts: 3
Angry interested in solution

I have the same problem with my truck. Exactly the same problem. Replaced gas cap, no solution. Added Techron, Helped but came back. Sometimes it run's ok for a while but then it goes to hell in a hand-basket and run's like it is mis-firing. (which it probably is) The EVAP Emission error relates to the Charcoal Canister, does anyone think it could be this? I am at a loss here. If Jupiterak is still out there, you had the same symptoms. Anything help fix it?
 
Reply With Quote
  #4  
Old 08-22-2004, 12:33 PM
Technical Article Contributor
Join Date: Oct 2003
Location: Topeka Kansas
Posts: 1,490
  #5  
Old 07-25-2011, 07:43 PM
Junior Member
Join Date: Jul 2011
Posts: 1
code P0442

I have the same problem with my truck. I read an article on it that states this is the hardest code to diagnose cause it can be a small leak anywhere in the system. The best way to find out where the leak is, is to take it to a shop that has a smoke machine. They pump smoke in and check the entire system to see where the smoke is coming out. I may have to do this, but I'm oing to check for any cracked hoses leading to the purge valve and charcoal canister. There was a small video on this in You Tube by Wells Vechicle Electronics.
 
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Brobones
2004 - 2008 F-150
2
03-23-2016 09:20 PM
Jerry Sharon
2009 - 2014 F-150
0
09-02-2015 07:15 PM
UnkaDave
Pre-1997 Models
5
09-02-2015 06:02 PM
smaring
1997 - 2003 F-150
5
07-27-2015 03:27 PM
pa 150
2004 - 2008 F-150
6
07-19-2015 06:57 PM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Sponsors

All times are GMT -4. The time now is 04:06 PM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: