I have an 85 Chevy Caprice with 343,000 miles on it ( yes 343,000) . Suddenly, I am hearing a clicking / snapping sound from the center / right of the dash during acceleration, and also sometimes during deceleration, and also when in Park, at about 1500 rpm.
At fisrt, I thought my spark knock was coming back, but a spark knock doesn't occur in neutral, and during deceleration. So I am thinking it might be : u-joint... transmission... distributor... exhaust... or speedo (but would speedo click in Park?)
I can't see anything unusual under the car or in the engine compartment.
ANy ideas welcomed ! Thanks