Hesitation on take off and a miss while goin down the road in my 1994 2.3l ford ranger

computer is fine,replace your COIL packs and wires,

Repair Shop--- you installed too many parts already,
on a guess with no testing

Most likely, it is a carburetor problem, because it is clogged.


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BMW ICOM

Check your fuel pressure regulator. Disconnect the vacuum hose from the back of it and check for fuel coming out, and listen to see if your engine RPM increases. If you have fuel coming out the back, it's ruptured and needs to be replaced. If your engine doesn't increase in RPM when you disconnect it, it's probably seized up and will need to be replaced. Those little FPR's are the cause of 90% of fuel related issues on these trucks, at least in my experience.

MISSING CAN BE CAUSED BY CLOGGED FUEL FILTER,BAD SPARK PLUGS AND WIRES, WEAK OR FAULTY IGNITION COILS, YOU COULD HAVE VACUUM LEAK AT THE INTAKE MANIFOLD OR YOU HAVE LOW UNEVEN CYLINDER COMPRESSION.

Is there somthing hitting the gas pedal, like the floor mat? Or maybe something under the dash came loose and is getting caught under the brake pedal and pushing on the gas. Put the shifter in neutral if you get into a situation where going to hit something or someone. The engine has a rev limiter, to prevent it from over reving.

if the pump has been changed twice its probally not the pump. could be the fuel pressure regulator. the computer will still throw a fuel code but in order to really diagnose the problem they would have to test the fuel pressure.

Sounds like you have a bad spark plug wire. Start the vehicle, then take a squirt bottle of water and spray around the plug wires. You should find it. It'll look like static around the bad one. Also you should get the misfire. You'll probably find a worn area on the wire. Best wishes to you.

The camshaft may be worn or the lifters .that explains the missing when you run it at operating temp.By the description of the oil. the reasomn the canmshaft wore out and the valve lifters is because the oil was not changed on a regular basis.

ask previous owner...must have been the problem why he change it