1999 Dodge Durango 360 V8 4x4
While driving driving the motor started to occasionally run rough. Then it started to become hard to start. this went on for about a month then it would start-up but not run. If you pressed the gas it rev's up then stalls. Replaced T.P.S. sensor, Temp sensor, Mass Air flow/temp sensor, Crank sensor, I have taken this to the shop 3 times and they tell me that there is no codes showing on the computer.

 

did you try cleaing the IAC motor? and check the battery, if it is more than 4 years old it has served its purpose and a low voltage from the battery (weak battery, it IS possible to pass a load test and still be bad) causes these trucks to run like crap (when mine went you couldnt keep the truck running unless you kept the jumper cables on it . . . )

 

Battery is new. Not sure what or where the IAC motor is?

 

its the idle air control valve, its mounted on the back of the throttle body under the air hat, held on by two torx screws, if it sticks the truck wont idle correctly, but will fire if you hold the gas pedal to the floor

 

Thanks will try changing that

 

Change the spark plugs to regular Champion Cooper plugs gaped at .040 for preventative maintanence.

 

Do that every tune up. This is something else. It started running rough but not all the time. then it got hard to start, then it would start rev high then stall. But there are no codes on the computer???

 

IAC I think then like Sharps stated.

 

Got a new one today. will change it and let you guy's know.

Thanks Guy's
Kev

 

it might be the alternator.. the D goes crazy when the alternator goes out.. are you getting 14.4v on the dash??