Ok so iv been reading a ton of threads even on other forums and still cant get a good answer. I changed my fuel injectors and throttle, fuel injectors are the ford v-8 injectos and has a 4.0 throttle body on my 95 2.5l 4cyl. Drove about 60 miles and it was running great with lots of power and acceleration over stock. Went out romping last night and took it through some mud and water and now it idles very weird.
starts high at 2k and falls down to idle
when idling it will fall to about 700rpms once at this position it idles like it has a huge cam or misfire
20-30 seconds go by and the idle jumps to 1k as if a load was taken off the motor and it runs GREAT, no misfire no hesitations nothing.
Another 30 seconds it does it all over again.
I did notice on the freeway today on my way home that it felt at if a huge gust of wind was hitting the jeep and was holding it back for a few second and then it would take off again. No wind out so i know it was the motor so this is what leads me to think the fuel pressure is off and not keeping a consistent psi.
Attempted solutions that have failed:
new accel performance coil
spray vacuum lines to check for a leak
cleaned new throttle body (AGAIN)
clean IAS and changed it with a new one. Found nothing so im running the old
New air/fuel filters
electrical connectors cleaned and in place
Charging system positive
(I did more, my brain hurts from thinking)
Long story short the only thing I think is left is to check my fuel pressure and im hoping that the problem lies with the fuel pump fluctuating.
At this point moral support and to know i might be on the right track would be appreciated lol. My head is going to explode trying to figure out whats wrong.