Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
Well the car failed the emissions test. I find it really shocking and odd, initially failed the first time. So I sprayed off the mass airflow sensor, and put new plugs in it. After doing that it ran the best its ever ran and even chirps the tires taking off, which it NEVER did before. But upon the re test it failed EVEN WORSE!
I am planning on blaming the EGR valve and I was wondering if cleaning it was possible or if replacement is the only option? This is a 1993. It looks like from my searches I tear it off, spray it out, oil it, new gasket, and go...Just wondering if anyone had any other opinions on this? Thanks
I'd turn it over and spray TB or carb cleaner into the ports and let it soak for a while. Our van was throwing an EGR code and that is essentially how I made it work right again.
Can you be specific on how it failed? We might be able to point you in a different direction if there is one.
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers 2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
