just_livin81

I know that there are a lot of threads out there with a similiar problem but I am to my wits end. My 93 GT will start up and run for about 3-5 minutes and then stall out. I have replaced the plugs and wires; cleaned the iac, pcv, egr, and TB; replaced the fuel filter and the fuel pump is working. Everybody keeps telling me that it has to be a vacuum leak but there is no hissing and I sprayed carb cleaner around all the vacuum point and the engine never made a jump. The car ran fine about two months ago and drove it from central florida to north florida with no problems. Then I replaced the headers, transmission, and the suspension; and now the car will not stay running. PLEASE HELP, ANY ADVICE WILL HELP!!!!!!!