Fix It

Your Toyota 4 Runner comes standard with a system diagnostic controller that contains a datalink connector. The connector can be plugged into an OBD II code reader that will read the trouble codes that the system diagnostic controller sends out. These codes will help you pinpoint the exact trouble with the Toyota. The codes can also be reset by the OBD II reader after repairs have been performed. The reader can be purchased from any auto parts store.

Instructions

1

Find the datalink connector under the drivers side dashboard, to the right of the steering wheel. Plug the OBD II reader into the datalink connector.

2

Put the key into the 4 Runners ignition and turn it to the "On" position, but dont start the vehicle.

3

Select the "Read Codes" command or similar type of command. Write down the numerical codes. Look the codes up in the readers manual for an exact description of the problem.

4

Unplug the OBD II reader from the datalink connector. Turn the ignition key to the "off" position. Take your Toyota to a mechanic to have repairs completed.

The 4.3-liter six-cylinder engine in your 2002 GMC Sonoma is equipped with many ways to reduce the harmful emissions created from the combustion process, and the most effective way is through the use of the catalytic converter. When the converter becomes clogged, you will likely experience a drop in fuel economy and engine performance. Your converter is located under the passenger compartment and connects between the exhaust manifold and the muffler inlet pipe. To remove the converter assembly, the rear transmission support will have to be removed.

Instructions

Removal

1

Park the truck on a level surface and set the parking brake. Lift the front of the truck into the air with the floor jack and place two of the jack stands under the front frame rails. Lower the jack until the truck rests securely on the jack stands. Remove the floor jack.

2

Place a block of wood on the jack arm and raise the jack until the wood contacts the transmission pan. Pry up on the transmission wiring harness plastic retainer on the transmission support to remove it. Remove the transmission mount to support stud with the socket and ratchet.

3

Place the third jack stand under the converter assembly and raise the stand arm until it is high enough to support the assembly. Remove the bolts for both of the converter hanger brackets with the socket and ratchet. Remove the three bolts securing the transmission support to the frame rails with the socket and ratchet. Remove the transmission support, washers and reinforcement from under the vehicle.

4

Disconnect the truck wiring harness from the right and left pre-cat oxygen sensors and the post-cat oxygen sensor by squeezing the tabs and pulling them apart. Remove the two converter assembly to muffler pipe nuts with the socket and ratchet. Remove the three flange nuts for the right and left manifold to converter assembly mounting studs.

5

Support the converter assembly by hand and remove the jack stands. Lower the converter assembly and slide it out from under the truck. Pry the both of the rubber hanger and brackets from the converter assembly.

6

Mark each of the oxygen sensors with tape so they can be installed to the same location during the installation process. Place the oxygen sensor socket over the left pre-cat oxygen sensor, making sure the pigtail sticks through the slotted portion of the socket. Remove the oxygen sensor with the oxygen sensor socket and ratchet. Repeat for the right pre-cat and post-cat oxygen sensors and set the oxygen sensors aside.

Installation

7

Clean the oxygen sensor threads with a wire brush. Install a small amount of copper anti-seize to the threads of the oxygen sensors. Install the oxygen sensors to their respective fittings on the converter assembly and tighten to 31 foot-pounds with the oxygen sensor socket and torque wrench. Push the rubber hanger over the hanger arm on the converter assembly; allow the bracket to hang.

8

Install the new exhaust gaskets onto the muffler pipe and both exhaust manifold. Slide the converter assembly under the vehicle and position it under its mounting location. Place the jack stand under the truck and lift the converter assembly onto the stand. Balance the converter and guide the outlet end onto the muffler pipe studs. Install the retaining nuts hand tight.

9

Support the opposite end of the converter assembly by hand and remove the jack stand. Guide the converter assembly inlet onto both of the exhaust manifolds and install the mounting nuts hand tight. Tighten the exhaust manifold nuts alternately to 30 foot-pounds

10

Connect all three oxygen sensor pigtails to their respective wire harness plugs. Set out the transmission support bolts and place a washer on each one. Set the transmission support into place and hold the reinforcement plate in position on the frame. Slide the mounting bolts through the frame and hold them in place. Install a washer to the over each mounting bolts and tighten the nuts to 40 foot-pounds.

11

Install the transmission mount nut and tighten to 42 foot-pounds. Swing the converter hanger bracket up and hold It to the transmission support Install the bracket mounting bolts and tighten to 13 foot-pounds.

12

Lower the floor jack and remove it from under the transmission. Push the transmission harness retainer into its mounting hole on the transmission support. Lift the front of the truck off of the jack stands with the floor jack and remove the jack stands from under the truck. Lower the truck to the ground and remove the floor jack.

The alternator in a 1992 Chevy Lumina is what supplies the power for everything electrical in the car. The cars alternator is also responsible for keeping the battery fully charged. When the alternator goes bad, none of this happens. Your battery goes dead and you wont be able to start the car anymore. The alternator works on the principle of a magnet moving across a wire inducing current flow and voltage. This voltage and current are internally regulated to levels that are usable by your car.



Changing the alternator in your front wheel drive 1992 Chevy Lumina is a fairly easy project that anyone with the proper tools can accomplish in a couple of hours.

Instructions

Removal of Old Alternator

1

Loosen and remove the negative battery cable from the battery, using the 5/16 wrench. Tuck it out of the way. Ensure that it wont move and make contact with the battery while youre working.

2

Insert the square drive of the ratchet into the square opening on the tensioner pulley and pull the pulley off the serpentine belt. With the tension on the belt released, carefully pull the serpentine belt off the alternator pulley and push it out of the way. Normally, you need to turn this pulley clockwise to release tension.

3

Loosen the two bolts that secure the alternator to the side of the engine closest to the bulkhead between the engine bay and passenger compartment using the ratchet and a 9/16 or 5/8 socket. You need to turn these bolts counter-clockwise to remove them. Set these bolts aside where you can easily reach them during installation.

4

Lift the alternator out of its location. There will be a two wire connectors on the back of the alternator. One is a screw terminal and the other is plug. Both of these need to be removed. Squeeze the connector and pull straight out. Use a 3/8 or 10mm wrench to remove the nut securing the large single wire. Set the old alternator aside as youll need to return it for a core refund.

Installation of the New Alternator

5

Connect the large wire to the lug labeled "BAT" on the back of the alternator and secure it with the nut and washer provided.Use the same wrench you used for removal to tighten the nut. Insert the two wire connector into the connector on the alternator.

6

Lower the alternator into place with one hand and, using the other hand, insert the bolts and thread them in as much as you can by hand. Use the ratchet to make the bolts as tight as you can. The bolts need to be turned clockwise to install them.

7

Route the serpentine belt back onto the alternator pulley and up to the tensioner pulley. Insert the square drive of the ratchet into the square opening on the tensioner pulley and turn clockwise to lift the pulley out of the way. Carefully slide the serpentine belt over the tensioner pulley and slowly let the spring take tension back onto the belt.

8

Reattach the negative battery cable. Use the 5/16 wrench to tighten the terminal bolt clockwise.