Why is idle speed increased during cold start?
When a cold engine is started, a component called the auxiliary fuel injector sprays additional fuel into the intake manifold. The extra fuel helps the engine start faster. So, the throttle valve opens to raise the engine’s idle speed. That’s why you see the engine idling at 1500rpm or even higher.
Why does my car idle so high when I start it?
The most common problem is a faulty fuse. In modern vehicles, engine idle speed is most often controlled by the idle air control (IAC) motor. When your car’s throttle is malfunctioning, this can cause your car to stall or idle high. Often this is a result of dirt buildup in the air intake.
Is the car supposed to idle fast after start up?
All modern cars are supposed to idle fast just after start up. Yours seems to be doing what it is suppposed to do, only with a bit more rpm. 2K seems a bit high, but the tach on your insturment cluster is not as accurate as a shop tach hooked up to the motor.
What’s the idle rate on a new car?
Sometimes the idle is higher than 2k. It has been this way since new, 150k miles ago. I encourage you not to worry, it is not an issue. After start-up, count to ten slowly and then turn on the a/c, rear window defroster and headlights. This will bring your idle down to less than a grand.
How long does it take to warm up a car at 2000 rpm?
Do not I say! it is only 2000 rpms when i start the car when it is warmed up is normal… i was worried how long it would take to go from 2000 rpm to under 1000 rpm when its really cold out and the engine takes longer to warm. now it takes about 5 minutes and its only about 58 degrees…
Is the idle on a Pontiac Vibe high?
I have an 03 Pontiac vibe, that under the hood is more or less identical to your 03 Corolla. Sometimes the idle is higher than 2k. It has been this way since new, 150k miles ago. I encourage you not to worry, it is not an issue.