IAT Maintenance
11-14-2003, 09:04 AM
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Car: 1985 Pontiac Trans Am
Engine: 355 with stuffs.
Transmission: 700R4
Axle/Gears: 4.10 Posi
Idle air temp sensors sit underneath the plenum on the TPI cars. If it is bad, there's no way the ECM can tell the air temp entering the engine, and won't know how to mix the air and fuel. You could remove it and clean it with a wire brush, but you'd be better off replacing it. If the IAT is bad the car will probably run rich, along with the SES light coming on as well, perhaps setting an engine rich code.
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