Monday, May 19, 2014
How do I Remove the Dipstick From a Blazer Transmission
Checking the transmission fluid level in a Chevy Blazer requires checking the transmission fluid dipstick. The dipstick is located on the passengers side of the engine compartment, near the firewall, at the rear of the engine. The dipstick has a black, plastic, ring-style handle, which is marked.
Instructions
- 1
Open the hood of the Chevy Blazer, and support it with the prop rod, which is located on the drivers side of the hood.
2Locate the transmission dipstick. It is on the drivers side, at the rear of the engine. The handle is marked and sits very close to the firewall of the truck.
3Wipe the dipstick handle with a clean rag. Grasp the ring on the top of the dipstick with one hand, and pull the up dipstick.
4Wrap the rag around the dipstick blade, and slide the dipstick out of the tube, wiping off the transmission fluid. Continuing pulling until the entire dipstick blade clears the tube.
Thursday, January 30, 2014
How to Change a Fan Belt on a 1994 Chevrolet Blazer
The fan belt on the 1994 Chevrolet Blazer not only turns the radiator fan, it also runs the alternator, water pump and other accessories located on the engine. This type of belt is called a serpentine belt because it resembles a snake by wrapping around so many pulleys on the engine. Over time, the belt can experience dry rot and cracking, despite being lined with steel braiding. Replace the belt, if it appears worn, to avoid getting stranded on the road.
Instructions
- 1
Map out the serpentine fan belt, noting how the belt wraps around each pulley. The serpentine fan belt is located between the engine belt and the radiator fan. Sketch out a diagram on a piece of paper. A diagram is also printed on the underside of the engine hood or on the fan shroud, but it may be missing.
2Locate the tensioner pulley. On the 3.8-liter engine, the pulley is located between the alternator and the power steering pump. On the 2.8-liter engine, the pulley is located between the alternator and the air conditioner pump. The pulley has a square hole in the center of it. The diagram on the underside of the hood also shows the location of the tensioner pulley.
3Place a 3/8-inch ratchet drive into the square hole and set the ratchet setting counterclockwise.
4Pull up on the handle to release pressure on the serpentine belt then slide the bottom of the belt off the tensioner pulley.
5Remove the belt from the rest of the pulleys then place the new belt onto the pulleys. Follow the belt routing diagram to ensure each pulley turns in the correct direction.
6Pull up on the handle of the ratchet and slide the belt under the pulley. When you release the ratchet, the tension pulley applies tension to the belt.
Monday, November 4, 2013
How to Change an Oxygen Sensor on a 2002 Chevrolet Blazer 4WD V6
The V6 4.3-liter engine of the 2002 Chevrolet Blazer has four oxygen sensors that monitor the fuel-to-air ratio and the catalyst efficiency. Locating the correct oxygen sensor or sensors to replace may be more challenging than actually replacing them. Keep in mind that the bank one sensor is on the same side as the number one cylinder, and the two sensors one (1) are on the front pipe just below the manifold. The two rear sensors are on the passenger side of the SUV; one placed in front of the catalytic converter and one directly behind it. These are referred to as sensors two (2).
Instructions
- 1
Drive the 2002 Chevrolet Blazer up onto two car ramps, and then apply the parking brake.
2Place a wheel block behind one of the rear tires.
3Put the safety glasses on, and crawl underneath the Blazer with the remaining items.
4Locate the oxygen sensor(s) you intend to replace. The two front ones are located in the front Y-pipe of the exhaust system towards the front of the engine. There is one per side of the Y-pipe. The other two are located before and after the catalytic converter (which is just behind the Y-pipe towards the center of the vehicle on the passenger side).
5Spray the threads of the oxygen sensor with penetrating lubricant, and allow it to soak in for a few minutes.
6Follow the wire harness from the oxygen sensor to the plug connection. Use a small forked pry tool to unseat the retaining tab of the plug connection from the frame or undercarriage of the SUV. Disconnect the wire harness plug.
7Place the plug of the sensor through the box-end side of the 22-mm or 7/8-inch wrench, and then place the wrench onto the hex-headed portion of the sensor.
8Turn the sensor counterclockwise using the wrench. A quick jerking motion of the wrench should loosen the sensor effectively, but if necessary, start the engine for a couple of minutes to warm up the exhaust system and expand the binding metals of the pipe and sensor. Be careful that it will not heat up the front Y-pipe sensors because they can become hot enough to burn you.
9Thread the new replacement sensor into the exhaust port by hand as far as it will allow. Tighten the sensor to 30-foot pounds with a torquing hand wrench. Do not over-tighten the sensor, or you will damage the threads.
10Reconnect the wire harness of the replacement sensor to the plug connection, and then push the retaining tab back into its respective hole in the frame or undercarriage.
