P0442 EVAP Control System Leak Detection - Ford Truck Enthusiasts Forums



Escape & Escape Hybrid Ford Escape, Ford Escape Hybrid, Mercury Mariner, Mazda Tribute

P0442 EVAP Control System Leak Detection

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 12-22-2004, 07:41 PM
wildbill1963 wildbill1963 is offline
Thread Starter
 
Join Date: Dec 2004
Posts: 120
wildbill1963 is starting off with a positive reputation.
P0442 EVAP Control System Leak Detection

(Small LEak)....What the heck is this? and how do I fix it?
Reply With Quote
  #2  
Old 12-22-2004, 07:51 PM
wildbill1963 wildbill1963 is offline
Thread Starter
 
Join Date: Dec 2004
Posts: 120
wildbill1963 is starting off with a positive reputation.
Thanks to Google, I found my answer:

What does that mean?This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

SymptomsYou likely won't notice any drivability problems.

CausesA code P0442 most likely means one or more of the following has happened:

A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
A small leak/hole in a fuel vapor hose/tube
Other small leak in EVAP system
Faulty vent o-ring seal
Possible SolutionsWith a P0442, the most common repair is to:

Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses
Reply With Quote
  #3  
Old 09-10-2010, 02:06 PM
rapturez's Avatar
rapturez rapturez is offline
Freshman User
 
Join Date: Oct 2003
Posts: 32
rapturez is starting off with a positive reputation.
p0442??

did you try any of these repairs?... if so did they work. I had just cleared the bank too lean problems and was with no engine light for about 2 weeks, now it is back and by scanning I got this code p0442.... any advice on where i should check?
Reply With Quote
  #4  
Old 09-10-2010, 02:55 PM
wildbill1963 wildbill1963 is offline
Thread Starter
 
Join Date: Dec 2004
Posts: 120
wildbill1963 is starting off with a positive reputation.
Quote:
Originally Posted by rapturez View Post
did you try any of these repairs?... if so did they work. I had just cleared the bank too lean problems and was with no engine light for about 2 weeks, now it is back and by scanning I got this code p0442.... any advice on where i should check?
Turned out a common issue on the V6 at least that I found so far. The o-rings that seal the intake runners (6 of them) to the engine dry out over time and cause a leak. the only way to detect them is to do smoke test.
Reply With Quote
  #5  
Old 09-10-2010, 08:28 PM
projectSHO89 projectSHO89 is offline
Post Fiend
 
Join Date: Jan 2004
Location: St Louis
Posts: 12,686
projectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant futureprojectSHO89 has a brilliant future
I don't see any possible way that an intake manifold leak can cause an evaporative emissions failure.... "Lean" codes, definitely - but a P0442, no.
Reply With Quote
  #6  
Old 09-10-2010, 08:30 PM
wildbill1963 wildbill1963 is offline
Thread Starter
 
Join Date: Dec 2004
Posts: 120
wildbill1963 is starting off with a positive reputation.
That was what mine was doing and that was we did to fix it.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
vacume leak chuck7300 1999 - 2003 7.3L Power Stroke Diesel 4 07-18-2014 05:07 AM
Exhaust Leak , please help KPO 3.8 & 4.2L V6 3 12-23-2002 09:16 PM
leaking engine NitrousAl 1978 - 1996 Big Bronco 3 12-19-2001 03:28 PM
Vac. Leak Injectors?? PAUL_2 1978 - 1996 Big Bronco 3 10-10-2000 03:28 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
2003, 97, code, control, detector, escape, evap, f150, ford, fuel, hosetube, leak, leakhole, p0442, po442, read, small, system, vapor

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump


All times are GMT -5. The time now is 10:39 PM.