I got many codes most to deal with Idle speed controller not being able to control idle. I replaced it. I checked the TPS sensor and its within parameters. No vacuum leaks that I can find, new O2 sensor, EGR valve. This is weird though as this thing fluctuates between 500 rpm and 1200 rpm the fuel pump pressure fluctuates with the rpm, I think that's weird. could the fuel pump be causing the idle to be that erratic? Fuel pump pressure is supposed to be 50psi but goes from 40 to 50 psi.
IAC/ISC something. I replaced it already, I did clean all the ports with carb cleaner, and throttle plates. So wierd.... I did not replace the MAP yet, but could. I hate guessing!
IAC/ISC something. I replaced it already, I did clean all the ports with carb cleaner, and throttle plates. So wierd.... I did not replace the MAP yet, but could. I hate guessing!