Question about 2002 Chevrolet Blazer

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I Have a 2002 chevrolet blazer,that fail,the Emission test,because,of something called,aMIL CMD,what is it.and where can.I find a cheep place to get it fixed.what is MIL CMD ON A CAR.

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MIL is Malfunction Idicatro Lamp/Light...the Check Eng. light on your vehicle. Go to local Autozone to have them check the light for free and they can tell you what codes appear.

Posted on Dec 30, 2010

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Posted on Jan 02, 2017

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What does mil cmd fail mean?


MIL is your malfunction indicator lamp, (check engine light)

CMD is the computer interface port, or OBDII port indicating a malfunction communicating with your cars computer

check all the fuses, primarily any marked pcm and retest your vehicle
note: your check engine or MIL has to be on in KOEO state (key on engine off), if the bulb is burned out everything will still work and the OBDII test computer will show MIL status ON, and if you don't have a computer to tell you that, you must get that light to light in the koeo state.

Aug 25, 2014 | Saturn Ion Cars & Trucks

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Emission failure on 2001 chevy blazer 4.3-


your vehicle has a vent valve solenoid located on the evap canister under the back end of the vehicle. You most likely have a bad vaccuum line going to the evap caniser. Have the vehicle smoke tested to verify. If no leaks are found replace the vent valve solenoid

Oct 25, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

How to remove fan clutch on a 2002 blazer


They make a tool for doing this, but it can be done without it. Use a square bar of something similar to place on the bolts to the water pump, using a large cresent, hold the pulley from turning and turn the large nut the direction of travel (same way the pulley turns). It's easier with the belt on.

Oct 02, 2010 | 2002 Chevrolet Blazer

1 Answer

Service engine light is on. What could it be?


service engine light normal is an indicator that something is wrong with your emission system, such as an oxygen sensor is going out or a sensor for some of the other emission control systems.

Jul 19, 2010 | 2004 Chevrolet Blazer

2 Answers

What is the air pump for? Sounds like an airplane when I start the vehicle. What I disconnect the pump, what affect will that have on the car's running?


The air pump is an emission control device. It is not going to really affect the running of your car as far as performance; however, if you live in an area where they test for emissions, it could definitely cause you to flunk an emissions test.

Jun 14, 2010 | 1999 Chevrolet Blazer

1 Answer

2002 chevy blazer codes 443 449 i replaced the maf sensor the vaf sensor on air horn the emmision valve on the engine the vent valve to even tried the gas cap clear codes drove the truck guess what codes...


p0443 is evaporative emission control system, purge control curcuit malfunction, p0449 is emission control system, vent control curcuit malfunction. p0449 is often a filler cap problem on fuel tank. try tightening cap

May 20, 2010 | 2002 Chevrolet Blazer

1 Answer

How to fix a p0442 on a chevrolet blazer


There is a small air leak in the evaperative emission control system,and they are not easy to find. Could be in anyone of the vacuum hoses.
The only sure way to find the leak is to call around and see who does smoke tests. What they do is, inject smoke into the system and where ever the leak is, the smoke will come out, otherwise you could search all day and never find it. All it takes is a pin hole in a vacuum hose to screw up the whole system.

May 18, 2010 | 2000 Chevrolet Blazer

1 Answer

I have a 2002 Ford Taurus, and an engine sign showed up. However, I pulled out the code which is P0442. what is the problem, how much would that cost me and when do I need to fix it, can I wait for the...


P0442 code relating to the EVAP (Evaporative Emission System).a small emissions leak. also check the gas cap .Try cleaning the seals first and then try putting a little vaseline on the seals before getting a new gas cap. -------------
Code P0442-Evaporative emission control system. Canister Purge system failed the monitor test indicating a large leak (over 0.040”). Enabling conditions: Engine running after a 6 to 8 hour engine off period called a cold soak. The test runs when engine load is between 15 to 45% and inlet air temperature between 40 and 130°F. Blocking Action: This code can block the following monitors: Fuel Control, O2 monitor, Catalyst Monitor, misfire monitor. Testing: Check the purge hoses for leaks, leaking vapor management valve or loose gas cap.

This simply indicates that there was no flow from the evap system when the purge valve was energized. This could be cause of a few different reasons. First, check for leaks by visually looking at all evap lines for cranks rips or any tears. Basically, anywhere that fuel vapors can escape.
----------- Here is the test that will smoke the system for leaks with a smoke machine.

Evaporative Emission System Leak Test

SPECIAL TOOL(S)

CAUTION: The evaporative emission system must not be pressurized to more than 3.48 kPa (14 inches H2O)or damage to the evaporative emission system may occur.
  1. Connect the Evaporative Emission System Leak Tester to the evaporative emission test port.
  2. Close the canister vent solenoid.
  3. Pressurize the evaporative emission system to 3.48 kPa (14 inches H2O) .
  4. Monitor the system for two minutes . The system fails the leak test if the pressure falls below 2.0 kPa (8 inches H2O) .
  5. Repair any leaks as necessary.
  6. Repeat the leak test until the system remains above 2.0 kPa (8 inches H2O) after the two-minute test period.
---------- get it repaired ASAP because if you drive the car in same condition the emisson system can get damaged.and code will be p0445 ,now the code is p0442 its for leak in the emisson system. ---------------- This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Oct 15, 2009 | 2002 Ford Taurus

1 Answer

Wont complete scan to pass emission test


When you rest your codes there is a series of tests your ECU has to go through before you can pass emissions. this is done some people can reset the code and go before its sets the code again. on the 96 you can have 2 tests not complete for it to pass. basicly you have to drive the car a couple days for the tests to pass.

check the readiness tests wait until only 2 have not passed. then you should be good.so drive and check.

Michael
ASE certified
PLZ rate.

Feb 09, 2009 | 1996 Chevrolet Blazer

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