intermittent power loss

[socaljp]

92 jeep wrangler 2.5l
randomly loses power under load while dirving
when i shift in to neutral engine revs fine
no engine light comes on
when im driving it feels like the engine starts to cut out but doesnt shut off then suddenly goes away and power comes back
i already changed plugs fuel filter air filter fuel pressure regulator problem is still there i was thinking it might be the fuel pump any suggenstions?
98000 miles on it

[hundahunta]

check fuel pressure, proper spark, loose wire connections, battery terminals, sensors, vacuum leaks.

[fredjacksonsan]

Check your plug wires, cap and rotor. How long since they've been replaced?