Why does my AC lose power when I accelerate?
Typically this occurs due to a bad vacuum check valve under the hood. During hard acceleration the AC door system loses vacuum, causing the doors to default to the windshield. This check valve keeps this from occurring. It is located under the passenger side of the hood.
Does AC affect RPM?
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 not accelerate when AC is on?
The reason for this issue is that your air conditioning system is directly tied to your motor—so as you cool off you’re effectively applying some of your horsepower when you set your climate controls to cold air. However, in most cases, this is only 5-6 horsepower.
Why does the car shake when AC is 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.
How long does it take to clean MAF sensor on corolla?
Cleaning the MAF sensor seemed to have done the trick and it was a simple procedure that took no more than five minutes. [update 5/7/14] – Corolla now has 147k miles and the low idle issue returned worse than ever.
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.
When does the RPM go back to normal?
The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.
What to do if your corolla has low idle?
[update 5/7/14] – Corolla now has 147k miles and the low idle issue returned worse than ever. This time cleaning the MAF sensor didn’t help, so I removed and cleaned the throttle body which was pretty dirty and that fixed the problem. Cleaning the Throttle Body: