engine speed issue

[Kod]

My friend hooked his scanner to my car and got a return code of engine speed not meeting target engine speed. Anybody have any advice or input? thanks.

FYI: His scanner is a snap on and not cheap, this is the only feedback it would really give.

 

[REDeyeZOMBIE]

Could be a bad speed sensor.

 

[Kod]

That's one of the only sensors that popped into mind, unless the idle air control can also cause this.

 

[Kod]

Anyone else have any info to put in on this? Any help is appreciated.

I did think that is it also possible for it to be the IAC motor?

 

[CrawlinZX14]

Well how about giving a description of the problems first then tell us how you are trying to diagnose the problem, then we can offer objective idea's. Saying you hooked a scan tool to it and this is what it said without a code will likely not net much. Idle surge the issue?

 

[LiquidX]

Start here.
Idle Surge FAQ

<iframe width="420" height="315" src="http://www.youtube.com/embed/KibYz21IMA0" frameborder="0" allowfullscreen></iframe>

 

[Kod]

Friend scanned my car because the cel came on. And the cel read what I have already told you. The car idles a 1k - 1.2k in park or neutral but drops to 850 steady in all other gears. With OD off it will not go into last gear - does not jerk or stutter. With OD on it used to be at 3k rpm at 80 mph. Now it is at 3k at 70 mph