My 4 cylinder '94 Ford Tempo has no power at

You could try the auto wreckers.

Sounds like fuel pump is going bad and needs to be replaced.

couple of things to check is fuel pressure,tps(throttle position sensor),see if the egr is opening too soon.you may have to check the exhaust backpressure to see if it has a plugged exhuast system.

this engine is starving of air,have you checked the air filter???.adrian.

your ignition switch could be faulty

Well the cost is location relevant, but there is more to be aware of.
First, brakes need to be done in axle sets, both front or both rear...
Usually there is other damage with wheel cylinder issues, like leaking. Brakes are done when soaked with brake fluid..and need to be replaced.
Also, springs need attention, as overheating happens on OTHER brakes with wheel cylinder issues...
Brake drums need to be resurfaced....
So all of these things take between 2 to 4 hours plus all of the needed parts. The wheel cylinders are not very costly, themselves, but the job and labor sometimes is..

you may need to change you fuel filters and your air filters

Disconnect the battery completely, try turning the key with the battery disconnected. Put the battery back together. The check engine light should be off now..

Having the harmonic balancer replaced today on my 94 topaz, rubber has broke in balancer

replace the radiator cap