I have a 1994 rehem plus 90 furnace, it will act like it is going to start up , with all the blowing, and then it will hesitate a few times then it will come on and run a normal cycle, it is the type with pvc pipe to pull in air and one to dispel it, thanks

Don`t understand, are you saying it works and heats your house? Or that it doesn`t

It works, but takes two or three times to get going, like the fan that pulls in the air kicks in and out