Where should the rpm be at idle?
For a passenger car engine, idle speed is customarily between 600 and 1000 rpm. For medium and heavy duty trucks, it is approximately 600 rpm. For many single-cylinder motorcycle engines, idle speed is set between 1200 and 1500 rpm.
How does idle stop work on a Hyundai?
To stop the engine in idle stop mode. Decrease the vehicle speed to 0 km/h. Depress the brake pedal with the shift lever in D (Drive) or N (Neutral). The auto stop indicator illuminates in green on the instrument cluster, when the engine stops. The engine is automatically restarted when you release the brake pedal.
What happens when engine RPM drops below 800?
However, when the engine RPM drops below the normal range of 800 RPM (for most cars), it is more than likely that you are dealing with an IAC valve problem. In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle.
What causes a car to stall at idle?
When the engine RPM drops below the normal range of about ~800 RPM, this often times will cause the engine to stall indicating a dirty or faulty idle air control valve. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your idle air control valve. Was this answer helpful? Thank you for your feedback!
When do I stop at red light RPM drops?
But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.
What causes a Hyundai Elantra to run rough at idle?
If a coil pack goes bad, it’ll cause a misfire and rough idle condition. Really, your Elantra will be running rougher at any RPM, but a misfire will be most pronounced at idle.
What happens if your Elantra loses power while driving?
Engine will still run, just won’t perform as it should. Your local Hyundai dealer should be able to scan the ECM and pick up on a trouble code for that. My 2012 Elantra just did same thing while I was on interstate and I was run off road because I could not accelerate above 20 mph.
However, when the engine RPM drops below the normal range of 800 RPM (for most cars), it is more than likely that you are dealing with an IAC valve problem. In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle.
What happens to your car when you idle it?
When the engine idles, there will usually be a misfire that you can feel just from holding onto the steering wheel. Furthermore, the RPM of your engine will be higher than normal when the vehicle is idle. The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop.