North American Turbocoupe Organization



Buzzing no start
Mason Offline
Junior Member
#1
So I have a 87 turbo coupe it all just happened no warning there is a loud buzzing in dash a little blue speaker and the beast won't fire up it turns over like the middle of summer but won't fire up does anybody have any ideas?
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Jeff K Offline
Administrator
#2
The blue buzzer is the overboost buzzer. It should only come on if boost goes over 17 or so psi.

You have lost a ground connection causing some circuit to seek ground thru the buzzer. Time to get hold of an EVTM or set of circuit diagrams and start tracing wires.

DOes the CEL come on with the key in RUN? If it does, the PCM is being powered up. Use a test light, not a DMM, to check for 12 V at the coil and at the TFI a a start.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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