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Fox Body · 10-31-2002, 07:40 PM

Hey guys, the check engine light in my 90 LX 4-cyl keeps going on for about 1minute and going off for about 5 minutes. The guy who does the free diagnostic testing at the local AUtoZone says the light has to stay on for him to read it with the device they use, but the light only comes on while I'm driving in the car. Any suggestions as to what might be causing this?

10-31-2002, 07:40 PM	#1
Fox Body Mustang Maniac Join Date: Sep 2000 Location: GA, U.S.A Posts: 2,266	CHeck engine light in 90 LX Hey guys, the check engine light in my 90 LX 4-cyl keeps going on for about 1minute and going off for about 5 minutes. The guy who does the free diagnostic testing at the local AUtoZone says the light has to stay on for him to read it with the device they use, but the light only comes on while I'm driving in the car. Any suggestions as to what might be causing this? __________________ 351W-powered 1979 Ford Mustang Ghia notchback '79 Video @ Idle Stock 5.8L under 4" cowl 'glass hood, C4 w/ Transgo shift kit, Holley 750 cfm, Edelbrock Performer RPM intake; Fluidyne Al radiator, Flexalite 175 electric fan, 1 5/8" MAC shorty headers, FRPP Al driveshaft; S&W 6-point cage; 2.5" Off road H-pipe, 2-chamber Flowmasters, 8.8" Rear w/ 3.55s; Weld wheels (15x6;15x8), Front: 225/60/15, Rear: 275/50/15 Nitto NT 555R Drag Radials; 14 x 4” K&N X-stream air filter. '92 GT (5-speed) Small In Car Video Stock 5.0L, 2-chamber Flowmasters, MAC CAI, Tri-Ax, Al pedals... "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body