My guess would be that the vehicle has a bad power brake booster.
how can I get the lowest price on a new car
because fords suck.
if it is pumping out when you rev engine then you have a blown head gasket
The Powertrain Control Module will cut back on the fuel to protect the engine
check the transmission fluid first
Rev Like to rev an engine
dont rev the engine to much dont rev the engine to much
Your car is gearing down to first and to do that it has to rev a little
The highest safe RPM for a 5.8 liter Ford Bronco from 1993 is about 3,800. The engine will rev above that but it can cause damage.
you should never rev your engine when you start your car it sometimes takes the oil pump time to pump oil up into the engine heads if you rev it too much your engine could suck a valve or blow a lifter.
5800 rpm's
You don't say how high RPM's are but when you are in neutral or park so there is no load on the engine , the PCM cuts back on the fuel around 3,000 ? RPM to protect the engine