Transmission fluid

Hello,

If I am not mistaken that year and up to at least 1994/1995 still has the Vacuum Modulator. If the Diaphragm has failed then the transmission fluid is being sucked into the engine.

So, check that it is located on the passenger side right by the catalytic converter and there is a heat shield protecting it. It will be difficult to get to.

.

All Ford transmissions and trans-axles use Mercon (XT-2-QDX)ATF.
Good luck.

Could be dirty filter and burnt up fluid, yes.

Hello,

Your transmission takes NOTE: MERCON Automatic Transmission Fluid is being replaced by MERCON V as a service fluid.

Fluid Type .................... MERCON or MERCON V ATF

NOTE: Automatic transmissions requiring MERCON can now be serviced with MERCON, MERCON V, or dual usage fluids labeled MERCON/MERCON V.A/T Fluid

9.5L (10.0 Qt)

Here is a guide that will walk you through the service.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Please let us know if you need anything else to get the problem fixed.