I just started having issues with my 2003 Ford Focus ZX3 2.0. I turn it on and it’ll crank. Sometimes it turns on and sometimes I gotta give it some gas to turn on. Once its on and I let go of the gas it goes down on RPM and turns off. I press on the gas and hold it to about 1000 rpm it’ll stay on. If not it shuts off.
I recently replaced the starter, battery terminals and cables. I don’t think it has anything to do with it but I also have a new AC compressor in there.
I did some research and may be a couple of things such as the MAF sensors, Fuel regulator, and possibly air intake. Not sure but want to get opinions from others to see what the problem may be so I can fix it.
Thank you so very much for your help!