Topic: Low idle after engine restarted

[slowyota]

Anyone know what direction I should take in determining why my truck has a very low idle when I restart the engine after just being turned off for a minute or two (or even 10 minutes).

Cold start is fine.  However, there's a point during initial warm up during driving that the engine idle dips too low, and then once the engine is definitely fully warmed up it comes back up to normal idle.

I guess I just need to start checking everything, but just thought I'd throw up a post in case someone else has had a similar problem?  Possible causes: Thermostat, Engine Temp Sensor, Idle Air Valve, Vacuum leak, EGR, other, all of the above!?

Truck runs really good, although I think I sometimes notice a slight bit of hesitation at lower rpms.

[slowyota [OP]]

Another thing I remembered... on rare occasions the truck will just turn over and not start.  It'll usually start on the second or third try though.

[emsvitil]

What year and engine?

[slowyota [OP]]

Oh ya, sorry!  It's a 92 Pickup with 22RE.

[slowyota [OP]]

Well, I think I found my problem.  I was testing my vacuum lines, and the one to the fuel pressure regulator and the charcoal canister were swapped.