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Does a bad egr valve cause you to fail a state emissions test?
Wiki User
∙ 14y ago
Yes it does and the code that was given to me for that was P400 and p1491
Wiki User
∙ 14y ago
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Does a catalytic converter cause a car to fail emissions?
Yes, it can if faulty or missing.
Will a knock sensor code fail a nys inspection?
That will cause you to fail an emissions inspection. Anything which triggers the CEL will, because everything which triggers it will adversely impact the emissions system on that vehicle.
Will a bad catalytic converter cause you to fail the emissions portion of the smog test?
Yes!
How do you disasble EGR valve?
Most are vac operated so simply plugging that but it is more likely to backfire and will fail emissions if you do.
Will bad oxygen sensors cause me to fail the emissions test?
Problems with the oxygen sensors are quite likely to cause emissions test problems. The car computer cannot properly adjust the air/fuel mixture to regulate the emissions.
Can an oxygen sensor cause the car to fail emissions test?
Yes, along with dozens of other things.
Why does your 1989 Jeep Cherokee fail the nox part on emissions?
If there are no other problems and the vehicle is failing the NOX emissions test, it's probably running too lean. Check the EGR valve, fuel pressure and the Oxygen sensor.
Will a cracked spark plug cable connector cause your 1991 Toyota Previa to fail emissions testing?
If its shorting or open, then YES
My 97 ram 1500 reads error code 441 evaporative canister will this cause it to fail the smog test?
It depends on where you live. If you live in a state that requires smog tests, yes, it will cause the vehicle to fail. The test includes verification of the status of the emissions diagnostic codes. In other words, if your car throws a code it won't pass.
Can a drity PCV valve cause misfire?
No, the only thing a dirty PCV valve will cause is a build-up of gas pressure inside the engine which make seals and gaskets fail.
What can a bad PVC valve do to your 2001 Chevy silverado truck?
if clogged it can cause excessive crankcase pressure create engine oil leaks,saturate oil with combustion fumes (dilute oil) cause idle problems or buzz like crazy at idle. also it can make you fail emissions test at mv inspection
Will your car fail the emissions test in IL if the check engine light is on?
Yes if it is emissions related.
