My 1992 saturn keeps failing the emissions test due to high HC GPM readings. The PCM indicates no problems. I was told that alot of saturns have this problem. I"ve done everything when it comes to a tune...
it is probably bunring oil which is causing this,,,if it is burning oil you can try this to help it,sometimes it works and other times it doesnt,,,,,get the car good and hot,remove the spark plugs and get top engine cleaner and dump it into the plug hole,let it sit overnight if you can,,,,disconnect the ignition module and put rags over the plug hole and crank the engine a few minutes with breaks inbetween to get all the left over cleaner out the engine,,,,then plug the ignition module in and put the plugs in,it may smoke really really bad,,,just keep running it,,you may have to put foot on gas to start it,,,,,let it burn all the **** out the cylinders and then change the oil and get new plugs and that should help the oil burning if it is a oil burner and hopefully help the emission readings,,
My car has been sitting for more than a year and ive changed the battery, spark plugs, air filter, oil, oil filter, the spark plug wires and the fuel pump works. Ive been told that its the sensor attatched to the air filter but ive also been told that its the distributor. Could there be any other reason that it dosent work?
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