11-02-2003, 08:25 PM
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Thread Killah
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Join Date: Feb 2001
Location: Greenville, SC
Posts: 5,835
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I'm thinking it is sensor related. The car runs fine for a little while from a cold start - probably while it is still running in default open loop mode. Once it has run long enough to go to closed loop (but not long enough to be warmed up fully) it starts the sputtering. Once it is warmed fully it runs fine again.
I agree - probably not fuel filter or O2 sensor. Neither would make it sputter/ misfire in these conditions without other symptoms.
I can swap MAF sensors between my wifes car and mine to try to diagnose.
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Matt
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2015 BRZ Limited 6MT
92 Ebony LS-L ECUtune Stage2av1, Z32 MAF, 370cc injectors, TomsSVX intake, BontragerWorks 22mm RSB #003, HID Hi and Lo beams, OT endlink and bushing mods, PWR Aluminum radiator, Harvey's QC shift kit, 2.5" flowmaster 80 exhaust, 17" Michelin Pilot Sport A/S, Poly sway bar bushings, Slotted Bradi rotors, AFBeefcake powdercoated calipers, 97 grill, and a huge set of air horns. 300,000 miles and counting
92 Ebony LS-L. ecutune stage1v4, motorsport 1pc pulley. Garage Queen - sold to Dad in upstate NY 155,000 miles
19 Subaru Ascent Premium - -Hers !.
89 DL 4x4 little red wagon - a.k.a. The immortal suby. 275k R.I.P.
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