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General Smog Check
 

1998 Jeep Cherokee Laredo Failed Smog Test

I took my 1989 Jeep Cherokee Laredo to the shop to have the smog check done and the Jeep failed the smog test. The smog mechanic said the RPM'S were too high, he fixed the RPM'S and the smog test failed again so he rechecked the my Jeep and found some exhaust leaks, the leaks were fixed and the jeep failed the test again. Now, the mechanic says the oxygen sensor needs to be replace but he is not sure the jeep will pass the smog test but he wants to try again to the test but I am afraid to tell him to go ahead because he is charging me different fees every time he tests and rechecks the jeep. Oh, by the way he performed a diagnosis right after the jeep failed the first smog test. Can you give some ideas as why the jeep in failing the smog test?


Answer:  

It's very possible your Jeep Cherokee in fact needs more repairs to pass the smog test. It appears this smog technician is conducting repairs and baseline testing one repair at a time. If they are not continuously charging you diagnosis time, this is ok.

It is not uncommon for a smog technician to conduct several "baseline" smog tests after performing repairs. We would only recommend you work out a diagnosis estimate with the smog station. The smog station should either charge a flat fee for diagnosis (usually 2 hours of labor rate) or advise you that your Jeeps smog check failure diagnosis will be difficult for certain reason(s) and they can not guarantee the total job will cost less than "x" amount.

Other than that, if you feel comfortable with this particular smog repair station, and they appear to be honest and informed, continue you on with their recommendations.

 


posted by SmogTips Support
 


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