I have been driving and notice the rpm is rather low on this car. About 10 minutes down the road the car starts jerking and slowing down and will not take acceleration and the rpm slowly decreases as it comes to a stop. I've changed the fuel filter. Don't know what else it could be.
Sounds more like a clogged catalytic converter or exhaust than a bad fuel pump.
SOURCE: 1994 ford ranger extended cab 6 cyl fuel injected 2 wheel drive automatic
This year of ranger had a few flaws, In one case, a break power booster was robbing the vacumm, you can test this by plugging it off and seeing the differance, but you will have limited brakes. This model year had a problem with a vacuum leak on the manifold. You can check these in many ways, but please don't use starting fluid. The rear of the manifold usually on the drivers side where it seals to the block.
Also, in 2 other cases a cracked head has gave me the same problem. It is caused from a loss of vacuum.
SOURCE: Slow acceleration from stop and when driving (trying to pass)
I have the same car. So far no problems with the Transmision. I had the Trans oil change out every 60 K
Sure sounds like you need to get the Transmision checked. Is the fault light on. I have invested ina fault code reader sure is worth it.
Good luck. Vilmos
SOURCE: '94 4.0L Ford Explorer losing power
Shouldn't cost much for 10 minutes work to test fuel pressure & confirm pump condition, but do it when vehicle 's been running for a while, long enough for pump to get heated up.
SOURCE: Taurus stalls while slowing down (low RPM)
Most likely Idle air control valve fault. Usually wont set a code unless it has a short or unplugged. There are some test that can be performed with a high end scanner but with out the data not much you can do.
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