What was reason for fail --do a complete tune up and check injectors
SOURCE: 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
SOURCE: failed smog test
trade it in on the scrappage scheme against a new one .or take it to an authorised garage for emmisions ,cant just point a finger at a certain component and say change that .Sorry but without the right equipment i would only be making educated guesses .What condition is the air filter in ---did you clean it before you went for the test
SOURCE: 97 CAVALIER (Z24) FAILED SMOG TEST
No, the water pump leak would not cause it to fail the smog test. The only way that could have any bearing on the test results, would be if you lost a lot of coolant, and the car was overheating, then maybe it would have something to do with failing. What were the results (specific #;s and exactly what failed?) Is the check engine light on?
SOURCE: high nox fail smog test any remedies? 99
NOX is created when the internal combustion temperature gets to high.The egr system uses burnt exhaust gases to line to cylinder walls.The purpose of this is decrease internal combustion temperature therefore reducing the amount of NOX created.Would look to a possible egr malfunction usually they will trigger the check engine light but not always.The 4.3L has been known to have issues with carbon buil up in the egr and the egr pintle not open and closing properly.
SOURCE: PCV valve failed visual inspection during smog
remove the hose to the PCV and It simply pulls out and a new one is pushed in and hose is inserted back on. It's kind of like a cork. I can not believe they check for visual inspection. Here in SC, we don't have inspections. But anyways, GOOD LUCK
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Hi Marie Thomas, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Which part of the test is it failing? Is the engine light on? If yes, do you have the trouble codes?
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