Why do my rpms fluctuate when AC is on?
Why do my rpms fluctuate when AC is on?
Carbon Buildup: A number of engine components are subject to carbon buildup over time, and this can place a significant load on the engine. When the additional load of your AC compressor is added, it causes the computer to miscalculate and increase idle speed too much.
Why does my car shake when I turn the AC on?
Shaking with the a/c on can be caused by a number of reasons. The a/c compressor puts a lot of strain on the engine because the compressor is similar to being a small engine itself. Stalling can happen more often with the a/c on and turning the steering wheel as the power steering pump also creates drag on the engine.
Why does an AC compressor decrease the RPM?
AC compressors have a parasitic load on the engine. They tend to decrease the RPM’s simply from the load. In the old days before computers the idle speed was set high enough so that when the compressor turned on it didn’t slow the idle speed enough to cause the engine to turn off.
Is it normal for car’s idling rpm to decrease when the..?
It may or may not be normal for your particular car. AC compressors have a parasitic load on the engine. They tend to decrease the RPM’s simply from the load. In the old days before computers the idle speed was set high enough so that when the compressor turned on it didn’t slow the idle speed enough to cause the engine to turn off.
Why does the idle speed drop when the a / C compressor is on?
Tap to check for your leaks. The idle speed initially drops because the A/C Compressor is driven by a belt connecting it to the crankshaft and requires some of the engine’s power to drive it. Most vehicles, however, have a mechanism to detect this rpm change under the A/C Compressor load and will bring the rpm back to normal.
What causes rpm to jump back up at idle?
This then causes the RPM to jump back up again and then settle to a comfortable idle speed. You see the same thing to a lesser extent when turning on other systems on the car such as the heated rear screen. It’s most evident with the A/C compressor as this has is one of the biggest drains on the system in terms of additional equipment.
AC compressors have a parasitic load on the engine. They tend to decrease the RPM’s simply from the load. In the old days before computers the idle speed was set high enough so that when the compressor turned on it didn’t slow the idle speed enough to cause the engine to turn off.
What’s the RPM of my car when the AC is on?
Basically, when i turn my AC on and put the car in drive, my RPM’s drop to about 625 and slowly rise up to 700ish RPM’s. Some times when i put it into drive the the AC on it stays at around 625 RPM’s. It seems to be intermittent mabey…
It may or may not be normal for your particular car. AC compressors have a parasitic load on the engine. They tend to decrease the RPM’s simply from the load. In the old days before computers the idle speed was set high enough so that when the compressor turned on it didn’t slow the idle speed enough to cause the engine to turn off.
What happens when you turn on the AC in your car?
When you turn on your car’s air conditioning (AC), you just expect the cool air to flow, smoothly and quietly. You certainly don’t expect it to affect the way the car is running.
