Suspect throttle positioning sensor (TPS)...can be tested...need a meter set to read 5 volts DC...Tps is located on throttle body...it has a three wire connector with wire colors: Brown/Orange...Dark Blue/Dark Green...And Pink/Yellow...Engine off...Push points of safety pins deep into into rear of in place connector PLUS METER LEAD on Brown/Orange wire and NEGATIVE METER LEAD into DarkBlue/DarkGreen...Set meter to read 5 volts...Start engine...At idle (Yes, I know it is running rough) then read meter...RECORD READING...Next rev engine to full throttle...RECORD READING...First reading must be .08 volts...Second must be 4.5 volts...If second reading is less than 3 volts...example 2.4volts TPS is culprit...Replace TPS...all readings OK? Let me know...saailer
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