1995 Dodge Intrepid 1995 Dodge Intrpid Gear

I just got my car fixed because it turned off on me while I was driveing and it was timeing issue and they went about run computer test on it and siad one my fusses was blowen and it wasnt causeing it to shift wrong and they told me it was the cigrate lighter and horn fuse. Well it worked fine for a few days and then it start shifting wrong again and a problem I had before also of where I could start car and put it in drive and couldnt tell me what gear I was in just all lights would be lit up on dash area that tell you what gear youre in and it dosnt tell me how fast it going. So thicking it was fuse I went got a new one and it wasnt blew fuse wasnt but I changed it and does it off and on. What coudl eb causeing this.