I have a 90 mustang GT 302 5 speed.... today when i pulled in a parking lot i pushed in on the clutch and the car keep wanting to go then when i started it it was in gear and the clutch all the way in and it jumped forward i got it up the road and it would not go into and didn't wanna come ouyt of gear... i have a firewall adjuster tried both extremes and the best it still wants to go. I replaced the clutch about 2 years ago as well could my tranny mount cause this..... or am i looking at something worse. The car sat most of the winter... also after i got it towed home it seemed to be better but then started it again... Plz help......