92 ex running poorly

[katt68]

i put these question on a few weeks ago but never got much input so i am trying again.
once again i find myself here pondering life and all its woes........

ok, she is acting up again and i seek your great wisdom.

symptoms,
starts ok( hot or cold )
idles rough.....flucuates between 1000 rpm- 500 rpm
seeems harder on gas if that is possible
after driving about 10 minutes or 10kms the CEL comes on and stays on.
also, while driving and i only apply a little bit of gas on the accelerator(hold it steady with a little pressure) the truck will sort of buck. she like surges..she will like take off and then settle back, take off ..settle back. only does this at slow speed or slight application of the peddle. does not do it at any other time.

please advise..


things i have done,
cleaned maf
cleaned iac

 

[jfsledge]

I recommend you have the stored codes read. If your CEL light came on, then an error code was recorder. This will give you some indication of what the program saw as a fault in your engine.

 

[Ryan1]

O2 sensors


Ryan

 

[ronnie mullins]

I'd clean the mas,iac, and throttle body.If not fixed try cheching the tps.These are easily done and easy to get to.Also could check fuel filter.you can do searches on all these operations.

 

[Blee1099]

Get the codes scanned and give that truck a complete tune-up.. You'll be suprised how much of a difference it'll make..