hey for starters im new on here and know a some things about mechanic work and i hope yall can help me with this..... my truck is like boggin down and not accleratin from around 2 to 3000 rpms and mainly in 1st 2nd and 3rd gear and the other gears it aint that noticeable but when it is doing this i can floor it and it'll pick up and go like its suppose to so my question is what would be causin it do this and how could it be fixed

 

have you checked for any trouble codes stored by the ECU?

if no codes, check the condition of your spark plugs, wires, cap and rotor and air filter and verify your timing and idle speed. if you've still got a problem then maybe a valve adjustment is needed. also, a check for vacuum leaks may be a good idea as well.

 

i just changed the spark plugs and i have tried be4 with the computer codes and the wirin has been messed with so much that it wont read nothin and it has a new cap and the plug wires i put on first of the year..... oh and somethin else that it did yesterday it idled down to 700 rpms and i bumped the gas a few times and it died but i cranked it right back up

 

Man this is a common problem believe it or not..caused me to rebuild my engine which didn't fix it..so I put in a V6 and that done the trick...I replaced fuel pumps, distributors, Throttle position sensors, ECU's, o2 sensors, thermostats, set the valves a litle tight, a little loose. AFM's, nothing ever worked....

 

mine was doing this i put a fuel filter on it a seemed to fix it,... but i did end up putting a fuel pump in about a month latter and found a bunch of trash in the tank,

so i'd try a fuel filter and check the fuel pressure