trouble codes

NEEDING HELP WITH CODES!!! KOER 42 "SYS RICH" 13 "R" IDLE SPEED CONTROL MOTOR NOT CONTROLLING IDLE PROPERLY 25 "KNOCK SENSOR NOT TESTED" KOEO 22 "MAP SENSOR OUT OF SELF TEST RANGE" -------------------------------------------------- CONTINUOUS MEMORY CODES 122 "THROTTLE POSITION BELOW MINIMUM...

Need some advice on how to go about fixing this issue. I am getting codes 116 & 114 also but I think that is due to checking while the engine was cold. Getting code 998 as well which I think means the truck is running in default mode. Truck started cranking sluggish and if it is REALLY cold...

my 1999 ranger has the 4.0 liter v6 and 4 wheel drive. my truck has presented the cylinder 6 misfire code twice in the last 6 months, which I have fixed with a new spark plug in that cylinder. yesterday, however, it started stuttering heavily under load, and all of the sudden had very little...