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I have 2004 chevy impala, V6 3800 - My check engine light is on. When I read the code, it is a large evac leak. What should I look at, I don't think it's the gas cap

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 31 Answers

SOURCE: check engine light.

you have a vaccum leak.check for cracked hoses

Posted on Jul 22, 2008

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bigawgntown
  • 13 Answers

SOURCE: Thermostat on 2002 Chevy Impala

the best thing to get is the Haynes manual for your car at advanced auto or autozone or somewhere like that and the book will tell you how to take everything apart and put it back. i think the manual is about $16.00

Posted on Jul 30, 2008

lasvegasrich
  • 65 Answers

SOURCE: need drive belt diagram

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Posted on Sep 16, 2009

  • 7353 Answers

SOURCE: 06 chevy impala v6 3.9 liter engine. Check engine

there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.

Posted on Sep 25, 2009

  • 1757 Answers

SOURCE: firing order for plugs and wires....on a v6 3800 2000 impala

For the 2000 Chevrolet Impala 3.8L V6:

Firing Order:
1-6-5-4-3-2

Cylinders:
.....(back).....
|...2...4...6...|
___________
|...1...3...5...|
.....(front)

Ignition Coil Connections:
(back)
o <---6
___
o <---3
o <---2
___
o <---5
o <---4
___
o <---1
(front)

Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Posted on Apr 22, 2010

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2 Answers

Code PO446 on evac system. what does it mean. engine light remains on 2004 montero sport all wheel drive with 4x4


It's the EVAP system. Code is for an open or short to ground in the gas tank vent valve. Pin hole in tank might cause a P0442 for a small EVAP leak, if the hole was large enough.

Sep 22, 2016 | 2004 Mitsubishi Montero Sport

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My 2004 chevy impala with a 3.8 engine acts like it dont want to go the rpms are kinda high my check engune light is on and blinking and i smell gas but my car is reading an o2 sensor code


Almost sounds like something is clogged up possibly catalytic converter.. Take to a well known shop for further testing, I would not drive it with blinking engine light just my thought.
Good luck.

Jun 18, 2015 | 2004 Chevrolet Impala

1 Answer

Code p0455 on 2006 chevy impala


That code is for a large EVAP leak. The first thing I would suspect is a bad EVAP vent solenoid. You should be able to find it up under the car behind the drivers rear wheel. Remove it from the vehicle. use jumper wires to supply power and ground to the solenoid. You should hear a definite click and you should not be able to blow through it. If you do not hear a click and you can blow through it replace it.

Apr 10, 2013 | 2004 Pontiac Sunfire

1 Answer

2008 impala check engine


Well obviously any shop owning an Evap Smoke
Machine could find the problem

Why else would they have made that investment

They also need system reference material & I would
expect they have a data base for that

Don't need a hose leak, could be an open solenoid

Oct 10, 2012 | 2008 Chevrolet Impala

2 Answers

2008 Impala Check Engine Light Evac Leak


evap not evac ! prob an evap solenoid or cannister purge valve

May 25, 2012 | 2008 Chevrolet Impala

1 Answer

2009 chevy impala check engine light


Check engine lights can mean a number fo different issues. I would recommend that you have the codes read from the computer and this will determine what causing the light to come. Most auto parts store take code reads for FREE!

Feb 05, 2011 | 2006 Chevrolet Impala

1 Answer

My 2004 chevy monte carlo has a engine code of PO455


From Answers.com

Large vapor leak in the evaporative emmisions system

Read more: http://wiki.answers.com/Q/What_is_code_P0455#ixzz17Y9zrN00

Dec 08, 2010 | 2004 Chevrolet Impala

1 Answer

06 chevy impala v6 3.9 liter engine. Check engine


there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.

Sep 25, 2009 | 2006 Chevrolet Impala

3 Answers

On a 2006 chevy impala it tells you to tighten the gas cap ,then when you do, we shut the car off. Then check engine light comes on. Where is the sensor located.


There is no sensor for a loose gas cap. What is happening is that the evaporative emission system is sensing a "Large Leak". Usually code p0455. The computer sees this as the most probable cause is a loose gas cap depending on several factors it looks at. You would need to clear the code(s) and see if that was the problem. If the light comes back on, then you have a problem in the system that will not let it seal. Possible solenoid problem, leaking hose / line, etc.

Mar 28, 2009 | 2006 Chevrolet Impala

1 Answer

Check engine light.


you have a vaccum leak.check for cracked hoses

Jul 22, 2008 | 2002 Ford Explorer Sport Trac

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