Have a 98 buick park avenue... love it, but two problems: first, the radio periodically cuts out, then comes back on,

thanks for using just answer, My name is Jack (MR.PUTTPUTT) and I am sorry to hear you are having a couple of problems. the radio problem is going to be an internal problem with the radio and will need a replacement radio this is a common problem with the radio model and I have replaced several of them. the starting problem is more than likely the fuel regulator on the fuel rail this part starts to leak over time and makes a long start/crank condition. let me see if I can get you a picture loaded of it so you can check it.

Ed, your engine may have a cover over it that will be held on by the oil filler neck if so remove this and then that will expose the upper intake, the picture that I loaded look to arrow number 1 this is a vacuum line that hooks to the fuel regulator, what you want to do is start the engine and shut it off then pull off the vacuum line and see if there is any fuel/wetness in the line if so then you need a new pressure regulator, this is very common problem also. Jack if you would do the pressure regulator test and let me know the results thanks