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1987 GTA car idles rough

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Old 07-16-2023, 03:50 AM
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Car: 1987 Pontiac Trans AM GTA
Engine: 5.7 LTR
Transmission: Automatic
1987 GTA car idles rough

1987 GTA car runs rough and won't start. Car was shaking from rough idle. What would be the possible causes of this?
Old 07-16-2023, 05:38 AM
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: 1987 GTA car idles rough

Any number of things. Bad spark plugs, bad gas, low fuel pressure, bad injectors, bad pressure regulator, bad ign wires, sensor reading way off, large vacuum leak, stuck egr, broken mechanical part inside the engine... give us some details. Check plugs, look for things disconnected like wires or vacuum lines.
Old 07-17-2023, 01:25 PM
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Re: 1987 GTA car idles rough

stock injectors???? Check the resistance when they are hot and cold
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