tracedog67 Posted January 31, 2005 Share Posted January 31, 2005 Fellers, Took my '97 OBW (239k miles) with 5 MT in this morning for an E-test and I failed! The computer came back with an EGR valve, all 4 cylinders misfire and a knock sensor. I assume i can easily replace the EGR and knock sensor, but what about the misfire? The car runs good although my mileage lately seems somewhat low but I figured that was a tire that has a slow air leak. I replaced the plugs when the dealer did the headgaskets at 192k miles so i may need to put some new ones in. Anybody got any good suggestions? thanks Tdog Cincy Quote Link to comment Share on other sites More sharing options...
mwatt Posted January 31, 2005 Share Posted January 31, 2005 Fellers, Took my '97 OBW (239k miles) with 5 MT in this morning for an E-test and I failed! The computer came back with an EGR valve, all 4 cylinders misfire and a knock sensor. I assume i can easily replace the EGR and knock sensor, but what about the misfire? The car runs good although my mileage lately seems somewhat low but I figured that was a tire that has a slow air leak. I replaced the plugs when the dealer did the headgaskets at 192k miles so i may need to put some new ones in. Anybody got any good suggestions? thanks Tdog Cincy For the misfire condition---tell me you don't have the original spark plug wires on that engine at that milage........(or do you?). Quote Link to comment Share on other sites More sharing options...
tracedog67 Posted January 31, 2005 Author Share Posted January 31, 2005 For the misfire condition---tell me you don't have the original spark plug wires on that engine at that milage........(or do you?). I replaced the wires about a year ago with aftermarket ones. When i had an emission test with the original wires everything passed perfect. Could cheap wires cause a misfire? they ran the e test using the onboard computer not with the exhaust. Tdog Quote Link to comment Share on other sites More sharing options...
85Sub4WD Posted January 31, 2005 Share Posted January 31, 2005 Yes, cheap wires can easily cause a misfire. Make sure you are also running OEM style spark plugs and that they are in good shape. Quote Link to comment Share on other sites More sharing options...
BillAileo Posted January 31, 2005 Share Posted January 31, 2005 FWIW: I had a bad experience using aftermarket wires on a '96 OB which disappeared as soon as I replaced them with OEM. The only non OEM wires I now use are Magnecors. Bill Quote Link to comment Share on other sites More sharing options...
richierich Posted February 1, 2005 Share Posted February 1, 2005 Is the check engine light on? If not then some of these codes are stored in the computer system. They can be really old. You need to have the computer codes taken out and then drive it for a day, and then take it back in. If then you have codes then go and replace those items. Quote Link to comment Share on other sites More sharing options...
tracedog67 Posted February 1, 2005 Author Share Posted February 1, 2005 Is the check engine light on? If not then some of these codes are stored in the computer system. They can be really old. You need to have the computer codes taken out and then drive it for a day, and then take it back in. If then you have codes then go and replace those items. How do I have the codes taken out? Can i do this my self? thanks Tdog Quote Link to comment Share on other sites More sharing options...
wae Posted February 1, 2005 Share Posted February 1, 2005 You can go buy an OBDII code reader... but if you hit up an Autozone, they'll read them for you, gratis. Advance Auto Parts used to do that, but the last couple times I went to the one in Covington, they grudgingly pulled their reader from behind the counter and did it, while telling me that they didn't really do that anymore, since someone walked off with their code reader a while back. Quote Link to comment Share on other sites More sharing options...
sprintman Posted February 3, 2005 Share Posted February 3, 2005 Give your engine an Auto-Rx clean www.auto-rx.com and a good injector clean, Techron or Redline SI-1 are good. NGK Iridium plugs are excellent as well in my Outback. Good luck...s Quote Link to comment Share on other sites More sharing options...
Seahag1978 Posted February 4, 2005 Share Posted February 4, 2005 This may or may not help you... but I believe I read somewhere that Subaru's warranty covers certain emissions components for up to 8 years... (it's a Federal thing) check on it... could save you some bucks... and headaches. Quote Link to comment Share on other sites More sharing options...
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