The transmission required a rebuild shortly after I purchased the car (due to lack of maintenance by the previous owner / transmission fluid was extremely dirty and burned before rebuild).
I also am experiencing surging idle for which I am currently researching a possible solution.
I have had an obsession with the 87-93 Mustang 5.0 since the age of 11 when my cousin purchased an 89 LX (which he still owns to this day).
At the age of 22 I was finally able to purchase the car that I wanted so badly as a young child.
Now that I have my baby she sits side by side with my 2000 Explorer in the driveway. As the years pass I will have gone through many cars, but my Pony and I will be together until death do us part.
In my short life of 22 years I have owned nothing but Ford vehicles (1998 Ford Contour SE, 2000 Ford Explorer XLT, 1990 Ford Mustang LX). I am and forever will be a loyal Ford customer for life!!!
Your surging idle is due to a bad Idle Air Bypass Solenoid , you can buy one cheap or just take it off and clean the cylinder with carb cleaner, carbon deposits are making the piston stick.
I am 17 and I too have just realized that dream. At 16 I received my first car, a very dirty, but great running 1990 mustang 5.0 LX convertible. For 1200 dollars. I LOVE IT.
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