Engine reving high when engine is cold

[betaman]

I have a 2003 Explorer, Eddie Bauer, V6.

Sometimes when I first drive the suv the engine acts like it's flooded, causing the engine to rev real high when pressing the gas. It seems to act normal if I step hard on the gas for about 10 seconds. Not sure if it's a computer problem? Can anyone advise me on what could be causing this?


Thanks,

Betaman

 

[snoborder42]

It could be, I know that the 1st gen explorers had a recall on the computers because they injected too much fuel. It could be that or a defective o2 sensor but i highly doubt that because its such a new vehicle.

 

[Rhett]

I have a 2003 Explorer, Eddie Bauer, V6.

Sometimes when I first drive the suv the engine acts like it's flooded, causing the engine to rev real high when pressing the gas. It seems to act normal if I step hard on the gas for about 10 seconds. Not sure if it's a computer problem? Can anyone advise me on what could be causing this?

It's normal for an engine to rev higher when first starting up when the engine is cold. The computer does this to bring the engine up to warmth a little faster, which improves emissions.

Having said that, I don't know how high yours is idling. An OHV V6 (you don't mention if yours is the SOHC or OHV) ought to idle at about 1000 rpm or so for the first few seconds after a cold start. After about 10-15 seconds the idle should gradually drop down to about 750 rpm. Then after about 4-5 minutes of idling it should drop down to 650 rpm, which is normal idle for the OHV V6.

On a fuel-injected car, I wouldn't press down on the gas on cold startup. I am of the belief that it's generally good to "ease" a car into warming up. That means no 2500+ rpm until the engine is warmed up. Much easier on the heads and gaskets not to "shock" them from near freezing to 200 deg F in a few seconds.

Give your engine time to rev down on startup. Just let it sit for a few seconds. If the idle doesn't drop after about 10-15 seconds then there could be something wrong...post here with your results...