Question about 2000 Pontiac Montana

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I failed my emission test code po440 and p1404 ck engine light on

Evaporative emission system

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 99 Answers

SOURCE: emissions test on inspection

There is a slight possibility there maybe a leak in one of the fuel lines or in the top of the tank itself. Do you ever smell fuel? If you can get the car into a clean garage, lay some newspaper or cardboard under the car and with the garage door open WIDE run the car for about 5 minutes, then check the paper for any fluid drips. Try to whiff the scent of the fluid to your nose (try not to inhale it directly) and see if it smells like gasoline. Remember the location in which you found the leak and take it to a mechanic to have them look into it thoroughly, especially in the area that you found the leak. That's just one idea you can try. It'll also help you see if your car is leaking any other fluids also. I hope this helps and don't forget to rate!

Posted on Jan 06, 2009

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keeperoffire
  • 106 Answers

SOURCE: I Have A 1999 Grand AM,I Have Gas In Oil,Car Runs

The gas in the oil thing can only be fuel injector related.I would start by useing a good fuel injector cleaner(recomend BG 44k)and see if that helps.On the emission code I would start by replaceing the gas cap.Its pretty common.

Posted on Mar 06, 2009

Molson02536
  • 3854 Answers

SOURCE: 1998 PONTIAC SUNFIRE ADVISE

Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump. 

So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself. 
The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
I hope this helps and good luck

Posted on Apr 09, 2009

j_del
  • 1586 Answers

SOURCE: My 2002 Grand Prix GT 3.8L Won't pass emissions.

Nope, you just need more miles. When the car's computer has been disconnected from power (such as when the battery is unhooked), it'll set what are called "readiness codes" when power is reapplied. It takes a certain number of miles to clear these - some cars require 50 miles, some 100 miles, and some (such as some Isuzu models) need very specific drive cycles to clear them. Once the requisite number of miles have been driven without issues, the readiness codes will extinguish and your car should pass.

Posted on Dec 10, 2009

  • 973 Answers

SOURCE: I have a 2003 Pontiac Vibe GT. The engine light

http://www.obd-codes.com/p0446 Please read here.

Posted on May 27, 2010

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2 Answers

Po 440 code check engen


p0440 is an evaporitive emission system system large leak detected generally on an 02 gm vehicle it is very common that the vent solenoid located by the fuel tank if you replace it the light will take a few days to clear its self. the vehicle runs tests on all sensors and systems and the test has to pass or fail a number of times before the pcm will turn on or turn off a check engine light.

Dec 20, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Code po440 evaporative emissions system & check engine light on


P04440 is a generic error code for the fuel vapour evaporative emission control system. This system is designed to trap fuel vapour build up in the fuel tank in a carbon canister and then to release these trapped vapours to be burnt when the engine is running. The car has a diagnostic process by which it checks the pressure integrity of the system. Anything out of the ordinary can result in the P0440 error. Check that your filler cap has a good seal and that it is fitted tightly. If this sorts out the problem the error code and CEL will disappear within a few restarts of the engine.

Nov 22, 2010 | 1998 Toyota Camry

2 Answers

What does po440 on a 2003 saturn vue mean with a service engine soon light on


That is a problem in the evaporative emission control system.
Could be anything causing it
Clogged filter in the charcoal canister
A leak in one of the vacuum lines
The purge valve not working,,,etc.
The best thing is to take it and have it checked out, they might have to do a smoke test to find the problem.
All they do is inject smoke into the system, if there is a leak the smoke will come out of it. All it takes is a pin hole in these emission systems to screw it all up.

Aug 13, 2010 | 2003 Saturn VUE

2 Answers

Check Engine lite comes on Code PO440


16824/P0440/001088 - EVAP Emission Control Sys: Malfunction Possible Symptoms
  • Malfunction Indicator Light (MIL) active
Possible Causes
  • Evaporative Emission (EVAP) System leaking
  • Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) faulty
  • Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115) faulty
Possible Solutions
  • Check Evaporative Emission (EVAP) System Sealing
  • Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
  • Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115)

Jun 17, 2010 | 2000 Volkswagen Beetle

1 Answer

I have a 2001 nissan sentra xe and my check engine light is on i had a diagnostic test and the codes PO 455 and PO 0440 came back what does this mean?


PO 455- Evaporative emission control System leak detected (check exhaust system, egr valve, or entire intake and exhaust system)


PO440- Evaporative Emission System Malfunction (also check oxygen sensor)

Jul 13, 2009 | 2001 Nissan Sentra

2 Answers

I get a po440 and a po440 pd code


evap emission control system malfunction, po440

Jun 23, 2009 | 1998 Chevrolet Malibu

1 Answer

1999 Deville w/ P0741 code and engine mis-fire, and P0440


evaporative emission control system po440. Check for emission evaporative hose loose from fuel tank or loose fuel cap.

Jun 13, 2009 | 1999 Cadillac DeVille

3 Answers

2000 cavalier check engine light code po440


P0440 - Evaporative Emission (EVAP) System


evaporative emission (EVAP) system has a large leak.
Check the gas cap or vent valve. these are the most common problems.


The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the Fuel tank pressure sensor (FTP). When the sensor indicates a small leak in the EVAP system, this code is set.


Here are some additional causes.

* A small leak in any of the EVAP hoses or fuel tank hoses
* A small leak in the purge valve or vent valve
* The EVAP Canister may be leaking

Jun 06, 2009 | 2003 Chevrolet Cavalier

1 Answer

1997 toyota camry check engine light on,code po440,po420,po441,


P0420 is catalyst system efficiency below threshold (bank 1)

P0440 is evaporative emission control system malfunction

P0441 is evaporative emission control system incorrect purge flow

Mar 29, 2009 | 1997 Toyota Camry

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