What would make my 1989 Dodge Ram 250 idle to fast? I have changed the air filter & the oil & filter?

take it and have the computer scanned on it that will give you a trouble code to work with ,without having that done all you can do is guess at it,auto zone will scan it for free then you,ll know,its usually a bad sensor that causes that too happen,but have it scanned to be sure,good luck with it.
What would make my 1989 Dodge Ram 250 idle to fast? I have changed the air filter %26amp; the oil %26amp; filter?
if the idle is high and variable it can be a vacuum leak......maybe a cracked rubber hose around the intake area.



It it is high and consistant it can be as simple as a timing adjustment or adjusting the idle itself.
What would make my 1989 Dodge Ram 250 idle to fast? I have changed the air filter %26amp; the oil %26amp; filter?
WELL FRIST OF ALL.THE OIL/FILTER DO NOT HAVE ANYTHING TO DO WITH IT. NOW YOU DONT SAY WHAT MOTOR BUT MOST ARE 318-360 OR MAYBE A V-6 BUT THEY ARE SO CLOSE TO THE SAME. AIR FILTER IF DIRTY WOULD MAKE IT RUN SLOW OR NOT AT ALL IF REAL BAD. YOU NEED TO HAVE IT SCANNED.BUT YOU DID NOT SAY IF CHECK ENG.LITE IS ON.BUT I WILL MAKE A GOOD QUESS AND SAY ITS MOST LIKELY TO BE A (IAC)IDEL AIR CONTROL OR (TPS) THROTTLE POSITION SOLENOID EVEN GIVEN THE FACT ITS A 1989 IT STILL HAVE A LOT OF COMPUTER STUFF THAT COULD BE WORN OUT, LIKE THINGS ,O2SENSOR,MAP SENSOR,AIR VALVE,BAD INJECTOR AND SO ON. FIND SOME WITH A SCANNER,SOMETIMES ADVANCE AUTO PARTS WILL DO IT FOR FREE GET IT SCANNED,GO FROM THERE.GOOD LUCK!
Most likely a vacuum hose leak in the engine compartment.

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big hair