Replacing an O2 Sensor

Category: Auto Tuning

2200 gm engine

 Oxygen sensors also known as o2 sensors will go bad somewhere around 60,000 miles. When an oxygen sensor goes bad your check engine light will come on. You will need to have your computer scanned, autozone does this for free. Most newer cars, especially 1996 and newer vehicles will have two o2 sensors. Scanning the computer will tell which o2 sensor is bad. The primary o2 is located in the exhaust header manifold. It is visible in this picture in the bottom, slightly left of the middle. The secondary oxygen sensor will be located next to the catylitic converter. The location of the two sensors are generally the same on all vehicles. This vehicle is a 2001 2.2 liter chevy cavalier.

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Small Engine Recoil Repair

Category: Small Engine Repair


Recoil rope broke on your small engine? Here is a guide to repairing a lawnmower, chainsaw, outboard motor, snowmobile or weed eater recoil. The pull start assembly is usually easy to get to and will not take long to repair. Generally there are up to four screws that will need to be removed for the recoil assembly to come off. Once the housing is off you will see that the rope knot is probably still tied inside the inner housing. To make things easy try to pull the string through the hole of the recoil where it previously or still passes through. pull the rope and count how many times it turns. If you were lucky, that may be how many rotations you will need and won’t have to wind the new rope more turns. When the rope is tight see if you can stick a screwdriver all the way through the recoil slots so it won’t unwind. Slowly release the rope and make sure it won’t unwind. Carefully untie the recoil rope knot located close to center of the recoil and inline with the hole the rope passes through. When replacing the rope only use a rope made for recoils. A new general purpose recoil rope is literally only a few dollars.

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IAC

Category: Auto Tuning


The idle air control is used to adjust idle speed on electronic fuel injected cars. Back before electronic fuel injection was used, carburetors would use a screw to adjust the throttle plates. The more the throttle plates were open the more air and the higher the idle would go. Fuel injected cars use a throttle body to control the air coming into the engine. The idle air control allows air to enter the engine instead of holding the plates open.

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