97tjMike wrote:
> Hello Everyone:
>
> I have a 97 TJ and 95% of the time it idles perfectly. However, about
> 5% of the time, usually when the vehicle has been run for more than 20
> minutes or so, the idle in neutral or park will shoot up to between
> 1200 and 1500 RPM. The only way to get it to stop is to put the
> vehicle into gear or to restart the car. If I restart it, it will not
> happen for a while, but it eventually comes back. The TPS was recently
> replaced, and I just replaced the idle air control valve, thinking
> this may have been the problem, but it still has the same effect. I'm
> thinking now that it may be the coolant temperature sensor (something
> wacky when the engine is hotter making the vehicle run at higher
> speeds??). Any suggestions? I'm hoping its not my computer...
>

Does the check engine light come on? Have you checked to see if there
are any trouble codes?

Jeff DeWitt