Why does my engine rev when I press the brakes?
It is possible that your brake master cylinder is leaking brake fluid into your power brake booster. Your power brake booster is connected to engine vacuum so if a flammable liquid such as brake fluid were to enter the power brake booster, the engine would be able to inhale that fluid.
Why is my car surging when stopped?
If an engine is not getting enough fuel (this is called “running lean”), due to fuel pressure (regulated by the fuel pump and regulator), restricted fuel injectors, a vacuum leak or really anything that throws off the fuel mixture going in to the engine, this can cause the surge.
What does it mean when Toyota pickup surging idle?
They are activated by coolant temp to open and close for quicker warm up. When they stick then you get this surging up to 1400 RPM or so then a rapid drop in RPM’s and the cycle continues as long as you are on the brake pedal! In other words it’s the IAC that’s bad. 7 people found this helpful.
What causes brakes to pulsate right after rotor and pad?
Your problem can only be because of: Wrong or defective parts, incorrect fitting damage such as not using a caliper piston retraction tool, incorrect re-assembly of shims and bolts and anti-rattle springs, previous damage or mis-alignment being masked by the old pad wear, a foreign body introduced into the system.
What are the signs of a bad brake booster?
Common signs of a faulty vacuum brake booster check valve include the brake pedal being difficult to engage, feeling spongy, or not working at all. 1. Brake pedal is difficult to engage
Is it possible to control brake pedal pulsation?
In extreme cases or when traction is marginal, uneven braking caused by pedal pulsation can make the car difficult to control. Fortunately, you can control most of the causes of brake pedal pulsation, through understanding how brakes really work and by paying attention to the details.