Engine stalls at idle ?

Other than replacing the IAC (idle air control valve), this could be a trans problem. Also check the motor mounts for excessive engine movement when reverse is selected. This sounds like you have a vacuum leak, dirty throttle bore or the IAC motor is not working but to be sure lets check out these guides to help us fix it.

https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run down these guides and report back.

Hi, my car goes off when the brakes come on and I start a gear. Which may be?

so when you have the brakes on, the engine stops as if you turn the key or it falters and stalls? if it is the latter, you will probably have a faulty brake booster.

Hi.
The engine idle falters and stalls. I have noticed that booster of my car has no check valve brake. Can it be the origin of the problem?

The check valve is plugged into the booster, see pic and look at your booster.

The model of my vehicle the valve is not coupled to the booster. It is between the booster hose and the intake manifold, as seen in the images(see 44730).

it should be easy to replace, have you done that yet?

I got one. Missing install. Then verify your performance.

Hi,
The engine of my car is turned off when stepping on the brake.the vehicle has an automatic transmission.

try cleaning throttle plate on both sides and IAC hole with choke cleaner.

already had done, but even follows the problem.

okay, well not knowing that is the first thing I recommend. check fuel pressure with a gauge may be low. auto parts rent gauge.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Then it may not start for 20 minutes.

Hi,

The first thing I would think is the ignition is affected by the moisture. Do me a favor. When this happens and it won't start, check to see if there is spark to the plugs. Here is a link that shows how it's done:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If there is no spark or a weak spark, the first thing I would do is check the distributor cap to make sure it is tight and has no cracks. Also, check to see if the ignition plug wires are in good condition as well as the coil wire to the cap. Have a helper crank the vehicle and see if you notice anything sparking. If you have some down time, open the hood, start the engine, and lightly mist the areas I mentioned with water to see if it causes a stall.

Picture 1 below shows the distributor cap.

Do this and let me know what you find or if you have other questions.

Take care,
Joe

The main thing that is going to affect starting or running when wet is the ignition system. So we need to pull a spark plug and check for a strong blue spark. I suspect you have an issue with the igniter or the coil itself. If you have spark but it is not strong or is even yellowish in color then most likely the secondary side of the coil is the issue so you are not getting the high voltage spark that you need.

I attached the basic info about this system. Let me know what you find with the condition of the spark when this is happening and we can go from there.

Shakes or Wobbles problem
1995 Toyota Corolla Two Wheel Drive Automatic 104000 miles
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The car rides fine when its going in high speeds but when its time to slow down and stop it stalls or starts to shake like it's gonna turn off. I have to put it in Neutral and pump the gas to keep it from shutting off. Please help. Thanks for your time!

Hey did you find out what is wrong with your toyota? I have the exact same problem.
Thanks

Check the Idle Air Control valve, they get dirty and can get stuck. Also check the EGR valve, they are not supposed to operate at idle/slow speed, if they open at idle, they will generally kill the engine.

Also make sure the torque convertor clutch is working properly, they engauge at 40-45mph, so you should feel the rpm's go up slightly when decelerating from 55 to 40-45, If not the TCC will kill the engine.

You can feel the TCC engauge when accelerating (smoothly) at 40-45mph. It will shift into high gear then you will feel a small "bump" when it locks up, you should also feel it disengage.

I have a 1994 Corolla that just had a water pump replaced. After which the car started running with a tiny miss. After the car was warmed up I took it for a ride and and made a really horrible noise like spark ping but LOUD!! It has slow acceleration as well as stalling when I come to a stop sign.. Timing belt was replaced a few years ago.. What can it be? It happened right after the Water pump was replaced...

Check the wires to see if there is a crossed wire, If you deid anything withe the plug wires it sounds that two spark plug wires are crossed. That would cause the misfire and ping. Just by reading your post to me that is what happened.

I did not remove the wires, Only the alternator, power steering pump, and replaced the water pump. I had to lift the valve cover to get the top timing cover off but I just let the spark plug wires sit in their holes..

it runs fairly decent at idle in park with an occasional slight hiccup.. I can rev the engine in park.. But When I drive it, that is when the pinging is extremely loud with crappy acceleration and stalls at full stops..

With it at idle there is no load on the engine or just reving, Did you take the spark plug wires off when you replaced the pump? It also might be just one wire that is not making a good contact or not on tight, so the car is running on 3 cylinders. check the wires and let me know what you find out.

the wires are all fine. it is running better today with 93 octane, but it still has a bad rattle on acceleration..

have the car scanned and check the timing