michelleag

I have a 1999 Trans Am in with an LS1 at work with a miss,my buisness partner I co own an used car lot with bought it at an auction last week Friday and is sold.Does show a couple codes,PO306 and PO302.I checked compression,nothing wrong there with 150 psi.The plugs are brand new,AC Delcos and I checked the coils too also good.I seen the plug wires,look like cheap plug wires from AutoZone or Advanced.The person buying it test drove it and the miss goes away at 45 mph.I test drove it and it does what this person buying it says it does.I am out of ideas on this and giving me a headache.This car ran fine at the auction with no problems before the miss happened,has 98,000 miles and sat in a garage for a month.