what could be wrong , if anything , when a car that's supposed to ideal at 1000 rpm stays at 1500 rpm?

Question

this is a 96 tarus and starts out loud at 2500rpm , in 10 seconds drops to 1500 rpm ideal. should ideal at 1000 rpm. is there anything that could be really wrong here ???

Answer 1

The idle is set too high. Probably the throttle body is stuck.

Spray some WD40 on the throttle cables.

Answer 2

My best guess would be that the choke isn't going off all the way, or that someone had addjusted the ideal screw at the throttle body. The proper adjustment should be marked with orange marking paint from the factory.

Answer 3

could also be a vacuum leak, while your sprayin that wd-40 around. spay some on the top of the engine around the throttle body, if the engine speeds up, or stumbles (which is normally the case) there is the leak.

Answer 4

i would replace the idle speed control motor.sounds like that is starting to go bad,i had a jeep like that,went out one morning cranked it up and it ran wide open,open the hood took the wires loose from the idle speed control motor didnt do it again,but later that day i had a new one delivered to my parts store.that solved my problem,hope that helps

Answer 5

On older cars at least, there's an idle screw on the carburetor that you can adjust. I don't know if there's a way to adjust it on newer cars though with all the computer-controlled junk on them.

Answer 6

Could be something dirty in the manifold, pick up some fuel injector clean and spray and spray it, it could also be a oxygen sensor or EGR is clogged

Answer 7

Is that the idle when the auto's in ''Drive''?

Curb idle is taken in ''Park'' or ''Neutral'' and is usually higher. With an automatic idle should be measured in ''Drive'', which of course will be lower.