detonation

93GTDIN · 06-27-2004, 02:24 AM

car is a 1994 mustang GT 5.0, bone stock, 94k well taken care of, 87 octane.

Runs just fine except under WOT it pings pretty bad. Pulled plugs for a tune up and they were white. Replaced plugs, wires, cap, rotor, fuel filter, and changed the oil (needed a tune up real bad). It still pings, but feels like its running stronger. The car hasn't been tinkered with at all, so it probably isn't the timing. Any ideas on where to look on this? The car is bone stock I don't get why it would ping...

stang_racer20 · 06-27-2004, 02:57 AM

I'd double check your timing first with a good timing light and spout disconnected. If I've learned one thing working on cars, its NEVER assume anything. And ALWAYS double check!

93GTDIN · 06-27-2004, 12:45 PM

ok, i'll check that. Any other ideas?

Rev · 06-27-2004, 02:30 PM

Could be the O2 sensor, especially if it's never been changed.

Rev

93GTDIN · 06-27-2004, 04:15 PM

02's don't alter A/F at WOT, which is when it pings.

go4it · 06-27-2004, 05:10 PM

Have you tried any higher octane gas?

06-27-2004, 02:24 AM	#1
93GTDIN Registered Member Join Date: Jan 2001 Location: Live music capital of the world, TX Posts: 324	detonation car is a 1994 mustang GT 5.0, bone stock, 94k well taken care of, 87 octane. Runs just fine except under WOT it pings pretty bad. Pulled plugs for a tune up and they were white. Replaced plugs, wires, cap, rotor, fuel filter, and changed the oil (needed a tune up real bad). It still pings, but feels like its running stronger. The car hasn't been tinkered with at all, so it probably isn't the timing. Any ideas on where to look on this? The car is bone stock I don't get why it would ping... __________________ 96 Cobra - a bit too stock. 14.0 @ 101

06-27-2004, 02:57 AM	#2
stang_racer20 Registered Member Join Date: Jun 2003 Location: Wisconsin Posts: 348	I'd double check your timing first with a good timing light and spout disconnected. If I've learned one thing working on cars, its NEVER assume anything. And ALWAYS double check! __________________ 92 Mustang GT, 347 Stroker(Forged Steel Crank/Rods-Balanced, Forged Aluminum Dished Pistons), Trick Flow Track Heat Intake, Trick Flow Twisted Wedge Heads w/ Stage 3 port/polish, 80mm C&L MAF, FMS 30# Inj., BBK AFPR, Trick Flow Stage 2 Cam, Trick Flow 1.6R Rockers, BBK E.L. Headers, Flowmaster Cat-Back, MAC CAI, FMS Pulleys, Griffin Alum. Radiator, MSD Pro-Billet Distributor; AOD, Dynamic 3300 Lockup Converter, B & M Super Cooler, B&M Ratchet Shifter; 3:73 gears.

06-27-2004, 12:45 PM	#3
93GTDIN Registered Member Join Date: Jan 2001 Location: Live music capital of the world, TX Posts: 324	ok, i'll check that. Any other ideas? __________________ 96 Cobra - a bit too stock. 14.0 @ 101

06-27-2004, 02:30 PM	#4
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	O2 sensor? Could be the O2 sensor, especially if it's never been changed. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

06-27-2004, 04:15 PM	#5
93GTDIN Registered Member Join Date: Jan 2001 Location: Live music capital of the world, TX Posts: 324	02's don't alter A/F at WOT, which is when it pings. __________________ 96 Cobra - a bit too stock. 14.0 @ 101

06-27-2004, 05:10 PM	#6
go4it Registered Member Join Date: Sep 1998 Location: Wise,Va. Posts: 248	Have you tried any higher octane gas? __________________ 93GT, B-50 Forged 327, S-trim, SFMU, TFS TW heads, TFS stage 2 cam, Ported Cobra intake, AFM powerpipe, PRO-M 75mm massair, 75mm throttle body, 42lb.inj. 1 5/8 headers, 2 1/2 h-pipe and exhaust, 2 chamber Flowmasters, 3.55 gears, Elder.timing gears, Black Magic fan, FMS aluminum radiator, MSD6al/BTM, MSD coil, MSD shift light, subframe connectors, A-pillar gauges, Hurst shifter, C4, 3500 stall, 130amp alt., 73mm calipars. 2001 Red Lightning #913 2004 F150 FX4

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