Question about 2000 Chevrolet Suburban

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Not high enough voltage on vehicle

Wont pass emmissions say not high enough voltage

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Go to Autozone and they will test your battery and alternator for free,only takes a few minutes.

Posted on May 07, 2013

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High nox reading preventing emmissions pass


Your uncle could be right. It is always best to make sure you put the correct fuel for your make and model in the tank. Don't put in any additives unless approved by the vehicle manufacturer. The catalytic converter in the exhaust system is what reduces the CO and NOX in your exhaust. It has a catalyst in there which causes certain chemical reactions in the exhaust. Firstly the converter must reach operating temperature, so before you get the exhaust checked make sure your cars exhaust is nice and hot, a five minute drive up to the inspection station first thing in the morning may not get the converter to the operating temperature. The other problem may be as your uncle said. The injector cleaner may have put out certain chemicals into the exhaust that have put a fine layer of residue in the converter. This will block the NOX from getting to the catalyst and therefore stop or lower the reduction. You may have to replace the converter (they are expensive here in Australia) but you should try and take the car for a long easy drive in the hope that it will burn off the residue (if there is any in the converter) and then go and have the levels checked, the converter should be hot enough to do its job by then. You may also want to try another inspection station on the other side of town or another town depending on the distance, that will get the converter to operating temperature and the inspection stations meter may be calibrated better than the one you are going so it will give a better reading!

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Check for a vacuum leak by doing a smoke test and see where the smoke is pulled into the vacuum line.

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I would say 10 to 20 miles would be enough to tell if the trouble codes will return. You may be able to disconnect the battery for a couple of hours to clear the codes, but using a scanner or code reader is better.
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The purpose of the warning light is to tell the driver the vehicle needs attention now.

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Hello, you probably have a trouble code P0506 stored in the system, this will keep from passing test. real simple fix. the throttle body is dirty, this will cause not enough air around the throttle body. simply clean out the inside of the throttle body around the throttle plate and bore. you will need to use throttle body cleaner or carb cleaner

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I have a 95 Tahoe with 158000 miles. In Maryland you have to get your vehicle emmission tested every 2yrs and mine passed the highway speed and lower speed exhaust emmissions but failed at idle test. Is...


could be a slight air leak on the exhaust like a small rust hole and its drawing in the air ,the proper way is to put a probe up the tailpipe but without knowing what the results were its very difficult to diagnose ,was it too high on O2 as this signifies a hole in the exhaust ,was it too high on CO or CO2 ,You see our test is every year on vehicles over ten years of age and it also includes a mechanical test as well but the emmisions is done with a probe not the OBDII as very few europeon vehicles can be read via the OBDII as they nearly all use encrypted software now from 2005 .

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My 1996 Nissan Altima has had the Oxygen sensors and EGR valve replaced. It needs to pass emmissions test but evan after driving it fo rover 500 miles the The ECM will not reset eventhoughtthe fault codes...


Putting miles on them wont reset the computer. It is how many times you cycle the key on and off. And they will only reset if the problem was fixed. I don't know how many times yours has to be cycled, but some vehicles are up to 100 times. Hope this helps.

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Emmissions problem 1993 saturn sc1 dohc


the car is older that 1996 there for you dont need emissions testing. if you wish to pass, check the carbon canister and the egr valve. if the temp gauge says the cars not over heating and the engine doesnt appear to be hot, dont worry about it.

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High Hydrocarbons cant pass emmissions test 1994 Jeep 5.2L. I changed plugs, oil, PCV valve, temp. sensor. oil filter. Truck has 112000 miles. Engine runs very strong. I lowered the fuel by regulating the...


If you changed the battery or it went dead before your test ,it reset you history you will have to drive it a couple of weeks to update you emission control module then have it retested

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1 Answer

Oil leak wont pass emmissions


Tune up will not stop oil leak. Find out where leak is and fix it. I never heard of oil leak being part of an inspection? Let me guess...You're in California?

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