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  1. Jan 4, 2016 · 1. Engine is running rough. One of the first symptoms of a bad or failing smog pump is a rough running engine. When a smog pump fails the finely tuned air-fuel ratios can be upset, and it will negatively affect the performance of the engine. The engine may have trouble idling, and may drop in engine speed, or stall when the pedal is pressed.

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  2. Apr 16, 2013 · equinox, chevrolet. AutoAnnie April 16, 2013, 7:19pm 1. We’ve noticed that when we have the inside air circulation on, we’re still getting exhaust fumes from outside the vehicle and other “smells”, too. I’ve never had this problem before and the dealership (and manufacturer) say that it isn’t air tight and we would still get outside ...

  3. May 8, 2018 · First, use your vent selector to change where air comes out. If air comes out of the bottom vents, but not the top vents, or it comes out of every vent except one, you may have a stuck “blend door”. Blend doors are located inside the dash, and they are what determines the direction of airflow. If they get stuck or damaged, they can block ...

  4. Sep 7, 2024 · The temperature of the air coming out of your vents tells you a lot about where the problem is. Grab a meat thermometer and stick it in one of the vents. Wait a few minutes to get your reading. [4] If it’s really hot outside, the air coming out of your vents will probably be 50–70 °F (10–21 °C). This is normal.

  5. Oct 27, 2019 · (They call this air "blow-by".) He says that if the air is strong, that might mean that the engine is bad. However, I did this same test on a 2020 Corolla and there was a really strong wind coming, stronger than any of the cars that I have checked out. Most of the cars that I have checked out were 2000 to 2010.

  6. Sep 14, 2022 · The most common symptom of air in a cooling system is overheating. The air acts as an insulator and prevents the coolant from doing its job. This can cause the engine to overheat, which can lead to serious damage. Other symptoms include a loss of power, poor fuel economy, and a burning smell coming from the engine bay.

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  8. Sep 16, 2022 · Without an operational blower, air distribution will be cut and no air will come out of the vents. If the blower isn’t working, it could also be due to a blown fan fuse. You can check it yourself since most modern cars have a fuse box in the cabin, and under the hood. Sometimes it’s as easy to solve the issue as to replace a blown fuse.

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