I have a 92 RS 305 TBI. After I start my car it revs up to 1500 rpm and it dies. It usually tries to stay alive, sometimes it does and sometimes it dont. It didnt use to do it that much, only when I turned up my beats while my car was off. Recently I got all MSD cap & rotor, blaster coil, 8.5 superconductor wires. Also I put on March power & amp underive pulleys. I have been runing it hard lately and also had my beats on. Now everytime I start it, it wants to die. Anyone know why its doing this or had this happen to them. Give me some input! Thanks

 

Try checking your IAC/TPS. There's a tec article on it.

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89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else