Question about 2005 Hyundai Accent

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Check engine light on - reads vacumn leak/suggestions? Gas cap ok, airfilter cover ok.

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Look at any hoses that eminate from the inlet manifold,thats where the vacuum starts....just follow them down to locate a crack/split.

Posted on Sep 05, 2010

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Posted on Jan 02, 2017

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1 Answer

Check engine light and check gas cap


First, you have to have the trouble codes cleared from the computer memory to make the warning lights go off.
And the problem may be a leak in the gas tank venting system instead of the gas cap. The gas cap is the most often cause, but not always. You may have to get a shop to check for leaks.

Jun 05, 2013 | 2004 Chevrolet Malibu Maxx

1 Answer

Check engine light on


erase code again , then disconnect battery for a few minutes, reconnect, see if code comes back. hopefully this resets computer. you don\'t have a reset button on steering wheel do you ? replace your fuel filter, if you haven\'t lately. maybe that will help.

Feb 20, 2013 | Dodge Stratus Cars & Trucks

1 Answer

Error code 340 & 457


  • P0340 - Camshaft position sensor circuit malfunction.
  • P0457 - Evaporative emission control system leak detected (fuel filler cap loose/off)

    There is a bulletin #0398 posted on 05/12/2003 for P0457 - Malfunction indicator lamp (mil) illumination with diagnostic trouble codes p0442, p0455, p0456, p0457, p1442 or check fuel cap lamp illuminated with diagnostic trouble code p0457.

I'd suggest checking with your local dealer, as it may be a fix that is covered by the dealer.

Oct 21, 2012 | 2002 Ford Focus

1 Answer

My engine light came on. The OBD reads emissions leak large. I have already bought a new gas cap and the light came back on. Any suggestions.


Why would you buy a gas cap?
You were told a large leak,diagnose those issues ,by having the EVAP System smoke tested and repaired

Oct 19, 2010 | 2008 Chevrolet Impala

2 Answers

Remote start problem triggers check engine light


The factory remote start system is designed to not function
when ever a check engie light is illuminated. The issue would have to be diagnosed by dealer and repaired. The remote starter should work again after repairs.

Jul 26, 2010 | 2007 Jeep Grand Cherokee Overland

3 Answers

I have 2000 chevy impala 3.4 engine i have check engine light with this code p0442 took it it to auto zone they said it was a small leak dont know where to start


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.
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
With 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

Dec 31, 2009 | Chevrolet Impala Cars & Trucks

1 Answer

Service engine soon light came on. AutoZone read


Sometimes you have to wait a week for the light to go off, the computer has to go through several start/run/stop cycles.

Nov 22, 2009 | 2004 Oldsmobile Alero

1 Answer

Possible vacumn line leak in line to gas tank. where is the line?


The line runs from the purge canister to the fuel tank along the frame, what makes you think you have a leak? any kind of a vaccum leak would make the idle go up in rpm,s or the hvac with blower on would go from where ever you set it to defrost (default setting with no vaccum) if you are just getting a check engine light of small evap leak 99% of the time it the gas cap o-ring worn or cap not tight.

Oct 01, 2009 | 2005 Jeep Grand Cherokee

3 Answers

Check Engine Light won't go off


If you have an Advance Auto Parts store where ever you are, they will read the code and tell you exactly what to code is and what it means. Any mechanic who "guesses" isn't a mechanic at all - he's a thief. Emissions leak can be any number of things, but not the gas cap!

Aug 21, 2009 | 2003 Dodge Caravan

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