What the heck is a code 74 ?

I cleaned my IAC, burped the Radiator and ran the codes.

On the KOEO codes I got a Code 11... [Image: smile.gif]

On the KOER test I came up with the usual Codes 34 and 77 but had a new one on me...a code 74 ??? WTF is that ? Not in my book and not on the NATO tech pages...

Still, the idle is sticking around 1,500rpm but didn't seem to be as often.

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Dan Eaves
88TC 5spd, Crower 5.5" Sportsman Rods, Short Wiseco Pistons bored .030" Over, Ported Head with Polished Combustion Chambers, Gutted & Polished Upper, Ported & Polished Lower, Polished T/B, Ported E6, SVO T3 .63AR Turbo, 3" DP w/No Cat, 2 1/2" single cat back w/DynoMax Super Turbo Muffler, RR Cam, K&N in Fenderwell, Gillis Boost Valve, Centerforce I Clutch, Removed A/C, Polished Wheels, Polished Valve Cover, Polished Crank and W/P Pulleys, Walbro 255LPH HP Pump, Kirban Adj FPR, and the DAMN Heater Core is new too !

[This message has been edited by Dan E (edited 11-04-2001).]

Dan,
According to the book that came with my scanner a code 74 is:

Brake on/off (BOO) switch action not detected during Dynamic Response portion of Engine Run Self-Test.

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Thanks Tim...nothing to worry about then...

Nope,
Sounds like you just forgot to tap the brake pedel.

Goes hand in hand with that 77! hehehe

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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.

Maybe its just your cars way of saying happy halloween. (get it, "BOO" code?)