I got a 93 5.7 in a caprice that surges at idle and bogs down runs really rough please help

Hook up a fuel gauge and see how much fuel pressure you have under acceleration.

https://www.ford-trucks.com/forums/1298751-1996-f250-5-8-fuel-pressure-issue.html

new spark plugs this decade. (a tune up?0
the filter is part of all 60k tuneups. letting it clog wrecks good pumps.
my wild guess, its lack of fuel flow, do to old filter.
or low fuel pressure.
car is identical to a Corolla. so is not unique or rare as some Geo cars are.
the cam belt not changes, invites valve kissing piston tops. BOOM
end of engine. (costs more to fix then worth of car)
the word is bogging, my engine bogs
if if bogs WOT (wide open throttle) and dont catch up < ITS NOT THE TPS. ever.
tps bad causes short bogs, called hesitations.
The map sensor , is what measure air flow and the ECU matches fuel to this air flow.
my guess, is it does that, but fuel pressure is like 15PSI, bad.

test new fuel filter if blocked Replace fuel filter again. make sure ot is not on backward.if still haveing problem check fuel pressure., Fuel pump could be bad if this was helpful please leave good feedback

fuel pressure should be 35 - 45 psi.could have faulty tps sensor.could have intake vacuum leak or ignition timing valve timing off due to worn timing chain.do engine vacuum test replace all vacuum hoses bad leaking egr valve diaphram or gasket will cause engine run poorly.

timing problem??

check throttle body and check for codes

It sounds like a fuel pump. Check the fuel pressure. What size engine?

YOU COULD HAVE A RESTRICTED EXHAUST.MUFFLER PLUGGED STOPPED UP ALSO THE CATALYTIC CONVERTER COULD BE PLUGGED.

you might have a bad tps (throttle positioing sensor) or maybe a vaccum leak or the idle air control solinoid is bad and be alot of things. if your check engine light came on, you can go to autozone and have them retrieve the code or codes to narrow it down

Also check the vaccum hose from the fuel pressure regulator to the intake manifold, it is right on top, to the front right of the valve cover where the fuel lines attach to the fuel rail, there is a small vaccum hose that runs from the regulator to the intake manifold, I have a 93 grand cherokee limited w/ 4.0L 6cyl, it was hard to start at times, wouldnt start at times without starting fluid spray and had your symptoms at idle, running rough like it wanted to stall like it was out of gas, I had various opinions ranging from fuel pump was bad to the fuel filter to the fuel presure regulator, the fuel pump relay ,etc....after replacing the relay and having the same symptoms, some digging brought me to this vaccum hose, wich had a break in it, when it was replaced it allowed the regulator to have the correct fuel pressure output and solved all the afforementioned problems way cheaper than the suggested alternitives. good luck.