Question about 2000 Mitsubishi Montero Sport

1 Answer

My car failed a smog check. Took to dealer and they said I need a valve job, esttimated cost, $2600.00 dollars. This doesn't sound right to me

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1 Answer

Doesn't sound right

You need to know in detail what testing was done
or get it out of there ---if they won't allow you into the
service bay to talk to the tech that worked on it,not
on the phone or in an office for the Dog & Pony Show

Posted on Nov 30, 2012

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Posted on Jan 02, 2017

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ewashmidas
  • 362 Answers

SOURCE: Mitsubishi Mirage PO 400

Here are the possible causes for a PO440 code:

EGR valve source vacuum supply line is open or restricted
EGR exhaust tube is clogged or restricted
EGR valve assembly has failed
PCM has failed

Please let me know if this information is helpful. Positive feedback is appreciated. Thank You!

Posted on Mar 20, 2009

  • 715 Answers

SOURCE: I have a 1997 Mitsubishi Galant ES that failed

check mass air control

Posted on Oct 07, 2009

bulldogchief
  • 388 Answers

SOURCE: smog problems

Yes, a bad O2 sensor could cause the vehicle to fail emissions check.

Posted on Oct 20, 2009

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1 Answer

2006 Trailblazer:: smog fail: multiple codes


probably just a plug at #1 ; swap the coil with another nearby cylinder, replace #1 plug and see what happens. if the code changes position then you'll know it's the coil. I've been diagnosing performance issues for over thirty years and I can't remember having to replace one of these individual coils; it's always the coil packs or coil/module combination units that fail. A sticking valve will cause a misfire code and you can add a container of injector cleaner to the tank to clean both the injectors and the intake valves as the injectors spray almost directly on the intake valve and will help clean them off.

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Mercury sable 1998 WON'T pass smog. Check engine


PO402--EGR Flow Excessive Detected

There are other components besides the
egr valve in that sytem,so you got things to
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PO443---Evap Control System Canister Purge

Valve Circuit Malfunction


PO1409--EGR Vacuum Regulator Solenoid
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PO420 & PO430--Catalyst System Efficiency
Below Threshold---Basically worn out exhaust
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My 1991 Toyota previa doesn't pass the smog check


There are many reasons why the engine and the emission systems fails a smog check. If you go to this page it will give you ideas on how to pass the test next time around.

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If it's like mine,the ZETEC engine,I'd wholeheartedly recommend letting Ford do it.They only charge 185 dollars labor and will do it right.
In my shop manual,it takes up FOUR pages of instructions on this job for the ZETEC....................that's too much trouble for me.
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2003 eats the oil dont smoke no leaks


It obviously has to be going somewhere and if there are no leaks noticed where it is normally parked then it has to be coming through combustion side which could mean worn piston rings, worn/bad valve stems/seals or worn valves. Depending on where you live if the dmv has smog/inspection regulations in place in order to register your vehicle you could have them run a test for usually 10 dollars but if you fail I think they give you a 30 day period to repair problem or they won't renew registration. Take it to a muffler/exhaust shop and have them hook up catalyst monitors in your exhaust which would measure smog output from your vehiclejust because there is no visible smoke doesn't mean you have high hydrocarbon outputs

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1 Answer

The dealership told me my Dodge Dakota need a valve job, they have had it for a week now, and just one week prior to it need this valve job I had it in for a tune up, new battery, and fuel injections...


Yes, but why is a better response. was there a problem before you took it to the dealer or this a additional sale after your "tune up " they said you need a valve job also to keep your engine running great. If you had a problem in the first place the should have addressed it first not sell you 600.00 worth of repairs then slap you with 2000.00 more.

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1 Answer

01 Ford Expedition. Check Engine light and failed Smog check.


whoever installed the egr valve, if it wasnt you, just cleared the engine codes, thus giving you this problem once again. Get it scanned at autozone, and go from there.

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Jetta failing smog due to non communication with OBD - Suggestions?


the no data error can be contributed to a bad interface cable or the scaqn tool was configured wrong and therfore could not connect to the ecm. I would recommend having a scan done again by a certiefied volkswagon tech chances are the mechanics used the wrong adapter cable or reader card. your smog problem could be that your evap canister is clogged therfore gives a bad reading.unfortunately you have to have a scan done but try an independant small shop that delas exclusively with foreign cars such as porche andd mercedez. the will have the correct scan tool and will be much cheaper than a dealership. your cost should be no more than 50 dollars US ... please rate this. thanks

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