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Check engine light has come on 3 times in the last month or so.

Had it checked at Ford. They said there is a small air leak, somewhere. Not big enough to fix ( also don't know where it is from) So, I guess I just live with that light on or go get it turned off every once in a while? Also have a capless fuel tank. Wondered about getting a cap for it?

Posted by on

1 Answer

Really

An air leak

Well--- let me tell you,you wasted your time at that dealer

You sound like you have EVAP System issues

You can have no vacuum leaks
The evap monitor won't run & complete
it's test
You can't go thru inspection
Motor won't run right
Fuel Trim will be effected
Gas mileage will suffer

Shall I continue

Now you see why I have issues with all dealers,that is
keeping my feelings under control

We'll continue--pure nonsense & you got the dog & pony show

If they put an Evap Smoke Machine on the vehicle & used the scan tool to command the system solenoids on & off--you would have an
answer in 15 min. --yes 15 min with you standing under the vehicle
watching

Dealers total waste

You can not clear all data or dash light because it will come back
until evap monitor runs clean,so the dealer doesn't care,sells you the vehicle & forget it

Posted on Dec 02, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Check engine light is on. EVAP small leak

You need to check the purge and vent solenoids for proper operation. You need to check the pressure sensor for out of range ( defective ). You need to check the filler neck for cracks and make sure the clamps are tight. You need to check the vapor lines for loose fit. I've seen at the charcoal cannister where the lines connect it may not be on strait. A smok test will reveal this if its not sealing. You may have a leaking rollover valve or fuel pump seal on top of the tank. You may just have a vacuum leak under the hood, These trucks have an Evap management valve also that can be leaking or out of specs. Look on the emmisions lable or vacuum chart under the hood. This will show you the underhood components.

Posted on Jul 15, 2009

sandanrosie
  • 53 Answers

SOURCE: very small evap leak

inspect all the hoses in the evap system dodge has some of the worst I'seen . it doesnt take much for a small leak to register. good luck

Posted on Aug 28, 2009

  • 1341 Answers

SOURCE: 2004 Mazda RX-8 PO455

It will not go off by itself,you will need to reset it by connecting to a diagnostic tool.Once cleared if there is any other problem then it will trigger the check engine light again.Hope this helps..

Posted on Sep 03, 2009

  • 2309 Answers

SOURCE: 2007 ford explorer check engine light

the problem is in the evap system, could be a vacuum line or purge cannister,check for nay loose or cracked hoses

Posted on Nov 16, 2009

  • 1 Answer

SOURCE: 98 BMW ti _ Engine Light P0442 (Small Evap Leak)

Try taking the gas cap off, and put it back on securely. Then have the check engine light reset. Drive on it for about 50 miles, and if does come back on continue onto other emissions related problems that link to that code (exhaust manifold perhaps).

answering this question with a vague "probably sensor has gone bad" will just have you running around in circles like a decapitated chicken. Take your time, don't rush, and don't throw parts into your car thinking it will solve the problem...sometimes the smallest mistake can turn this like on.

Posted on Jan 21, 2010

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