My 89 v6 firebird stalls out so u brought It to te shop and the guy adjusted the timing on it and it still stalled out. So I brought it back and he raised the idle higher. So it still stalls out and did the plugs and plug wires. Not te cap and rotor. Can any body help me out please. I wish I never got this car even though I had it for a month and love it an it's my primary car