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Registered
Join Date: Jul 2008
Location: Central Washington State
Posts: 4,413
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Yep, as mentioned, unplug it and see what happens. The TTS should only function when it sees power from the starter circuit, and then completes the ground to the injector (not sure if it's a frequency valve or a solenoid in the fuel distributor). I would have to pull out my circuit diagrams to see where that injector/solenoid is getting it's power from but my gut says a faulty TTS would not cause the injector to stay on...rather the opposite.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ.
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