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When the check engine light illuminates on the dash in a Nissan
Sentra, it is an indication that the computer has recognized a problem within its sphere of influence. Once the problem has been addressed and corrective action completed, the computer can be reset by erasing the existing codes.
Difficulty: Moderate
Instructions
Things You'll Need
Code scanner
1
Insert the code scanner's connector into the OBD port located under the dash to the right of the steering column.
2
Turn the ignition key to the run position. Make sure the engine is off.
3
Press the button for "Read" on the code scanner. Within less than 1 minute, the scanner will display all failure codes that are stored in its memory.
4
Write down the failure codes displayed by the scanner. Cross-reference the codes with the code sheet that comes with the scanner. The codes are displayed with a letter followed by a four-digit number code. Deciphering these codes by cross-referencing them with the code sheet offers an explanation of the failure.
5
Turn the key off. Correct the failure so that the computer can be reset.
6
Turn the ignition key on, keeping the engine off. Press the "Erase" button on the scanner. Start the vehicle and allow it to run for 5 minutes. Watch for the check engine light to come back on. If it does, the problem has not been corrected. If it stays off, the problem has been successfully resolved.
Rabu, 29 Juni 2011
How to Replace a Fuel Pump in a Nissan Altima
The fuel pump in a Nissan Altima is electric so you should check the fuses and relays before inspecting the fuel pump itself. If you have fuel in your tank but your vehicle has difficulty getting fuel, you may need to clean your fuel pump or replace it entirely. The Nissan Altima's variety of styles may affect your choice of fuel pump.
Difficulty: Moderately Challenging
Instructions
Things You'll Need
Fuel pump kit
Socket wrench set
Torque wrench
1
Determine the fuel pump that your Nissan Altima will require. This depends on the make and model and engine size of your vehicle. Models made before 2002 will have a 2.4 L KA24DE engine and models made after 2001 may have a 2.5 L QR25DE or a 3.5 L VQ35DE engine.
2
Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench.
3
Access the fuel pump by taking out the rear seat and removing the access cover. Unplug the fuel pump's electrical connection and disconnect the fuel lines from the fuel pump. Remove the locking ring or screws with a socket wrench and disconnect the fuel gauge assembly so that you can disconnect the fuel tube from the fuel gauge.
4
Remove the fuel pump by holding the connector for the fuel line in one hand while pressing down on the two locking tabs at the same time. Lift the fuel pump out of the fuel tank. Discard the O-ring.
5
Install the new fuel pump using the items included in the kit, especially the O-ring. If you have a threaded lock ring, torque it to between 22 and 26 ft. lbs. If you have lock ring with six retaining screws, torque them to between 18 and 22 in. lbs.
Difficulty: Moderately Challenging
Instructions
Things You'll Need
Fuel pump kit
Socket wrench set
Torque wrench
1
Determine the fuel pump that your Nissan Altima will require. This depends on the make and model and engine size of your vehicle. Models made before 2002 will have a 2.4 L KA24DE engine and models made after 2001 may have a 2.5 L QR25DE or a 3.5 L VQ35DE engine.
2
Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench.
3
Access the fuel pump by taking out the rear seat and removing the access cover. Unplug the fuel pump's electrical connection and disconnect the fuel lines from the fuel pump. Remove the locking ring or screws with a socket wrench and disconnect the fuel gauge assembly so that you can disconnect the fuel tube from the fuel gauge.
4
Remove the fuel pump by holding the connector for the fuel line in one hand while pressing down on the two locking tabs at the same time. Lift the fuel pump out of the fuel tank. Discard the O-ring.
5
Install the new fuel pump using the items included in the kit, especially the O-ring. If you have a threaded lock ring, torque it to between 22 and 26 ft. lbs. If you have lock ring with six retaining screws, torque them to between 18 and 22 in. lbs.
How to Replace Front Disc Brakes in a Nissan Pathfinder
If you own a 2002 through 2005 Nissan Pathfinder and the brake light stays on for the entire drive or if it pulls to one side when you apply the brakes then you need to do some mechanical repairs to fix the problem. Replace the front disc brakes on your Nissan Pathfinder.
Difficulty: Challenging
Instructions
Things You'll Need
Brake pads
Syringe, turkey baster or similar tool
Brake fluid
Wood wedges or similar tools
Torque wrench
C-clamp or similar tool
Mechanic's wire
1
Park the Nissan Pathfinder on a flat surface. Place the parking brake on. Using a syringe, turkey baster or similar tool, siphon the fluid out of the master cylinder reservoir. Drain two thirds of the fluid out of the cylinder. If the level is less than half way full no fluid needs to be drained. Place wood wedges or similar tools behind the wheels to prevent the vehicle from rolling.
2
Jack the vehicle up and secure it on jackstands. Remove the wheel assemblies. Remove the lower pin bolt from the brake caliper. Rotate the caliper up, allowing access to the torque member. Suspend the caliper from the frame using mechanics wire.
3
Remove the brake pads by lifting out of the torque member. Remove the hims and the retainers if they are not engaged onto the pads. Install the new pads. Reinstall the shims by engaging them on the torque member. Engage and enstall pad liners to each pad.
4
Compress the caliper pistons back into the housing using a C-clamp or similar tool. Remove the mechanic's wire and pivot the caliper back into position. Make sure that it is over the torque plate and that the dust boot is not pinched. Install the caliper pin.
5
Using a torque wrench, torque the bolts to 24 to 31 ft. lbs. Remove any trapped air by pulling, gently on the pin boot. Reinstall the wheel. Lower the vehicle. Reconnect the negative battery cable to the battery and start the engine. Fill the master cylinder reservoir with brake fluid and put the cap on.
6
Start the engine and apply the brake pedal 3 to 4 times seating the brake pads. Test Drive the Pathfinder at slow-to-moderate speeds to ensure that maintenance was performed correctly.
Tips & Warnings
Prior to performing the maintenance on your Nissan Pathfinder visit your local automotive parts supply store and purchase the necessary tools. Be prepared to provide the auto parts store employee with the make, model and year of your Nissan Pathfinder.
Difficulty: Challenging
Instructions
Things You'll Need
Brake pads
Syringe, turkey baster or similar tool
Brake fluid
Wood wedges or similar tools
Torque wrench
C-clamp or similar tool
Mechanic's wire
1
Park the Nissan Pathfinder on a flat surface. Place the parking brake on. Using a syringe, turkey baster or similar tool, siphon the fluid out of the master cylinder reservoir. Drain two thirds of the fluid out of the cylinder. If the level is less than half way full no fluid needs to be drained. Place wood wedges or similar tools behind the wheels to prevent the vehicle from rolling.
2
Jack the vehicle up and secure it on jackstands. Remove the wheel assemblies. Remove the lower pin bolt from the brake caliper. Rotate the caliper up, allowing access to the torque member. Suspend the caliper from the frame using mechanics wire.
3
Remove the brake pads by lifting out of the torque member. Remove the hims and the retainers if they are not engaged onto the pads. Install the new pads. Reinstall the shims by engaging them on the torque member. Engage and enstall pad liners to each pad.
4
Compress the caliper pistons back into the housing using a C-clamp or similar tool. Remove the mechanic's wire and pivot the caliper back into position. Make sure that it is over the torque plate and that the dust boot is not pinched. Install the caliper pin.
5
Using a torque wrench, torque the bolts to 24 to 31 ft. lbs. Remove any trapped air by pulling, gently on the pin boot. Reinstall the wheel. Lower the vehicle. Reconnect the negative battery cable to the battery and start the engine. Fill the master cylinder reservoir with brake fluid and put the cap on.
6
Start the engine and apply the brake pedal 3 to 4 times seating the brake pads. Test Drive the Pathfinder at slow-to-moderate speeds to ensure that maintenance was performed correctly.
Tips & Warnings
Prior to performing the maintenance on your Nissan Pathfinder visit your local automotive parts supply store and purchase the necessary tools. Be prepared to provide the auto parts store employee with the make, model and year of your Nissan Pathfinder.
How to Change the Headlight on a 2005 Nissan Maxima
Change the headlights on your Nissan Maxima for maximum visibility and performance.
The 2005 Nissan Maxima headlight system has two options, a 9012 halogen bulb or a Xenon bulb available only through Nissan. The Xenon or High Intensity Discharge headlight is brighter than the halogen bulb but must be changed by a service tech at Nissan. The halogen system was more common in the Maxima and the 9012 bulbs are available at any auto parts store, allowing the vehicle owner to change the bulbs themselves. If you are not sure which type of headlight is in your Maxima, check with a Nissan service department, they can help you identify them.
Difficulty: Easy
Instructions
1
Open the hood of your Maxima and locate the large plastic cover on the rear of the headlight assembly. There is a single wire running to it and it is the largest of the sockets and caps on the headlight assembly.
2
Rotate the headlight bulb cap counterclockwise and remove it from the housing. Lay it aside then disconnect the electrical connector from the rear of the bulb by pulling it straight off the bulb. Unlock the spring clip that is retaining the bulb in the housing and swing it out of the way.
3
Remove the bulb from the headlight assembly and discard it. Install a new 9012 bulb into the housing, being careful not to touch the glass on the new bulb while installing it. Oils from your hands will cause the halogen bulb to overheat and fail.
4
Swing the locking spring clip over the bulb and hook it under the catch on the headlight assembly. Install the wiring harness connector on the back of the bulb and install the plastic headlight bulb cap on the rear of the headlight assembly. Turn the cap clockwise until it is tight.
5
Turn the headlight switch on and verify that the bulb is working. Cycle through the high and low beam positions, checking them both then shut off the lights.
Tips & Warnings
While you can change a single headlight bulb on your Maxima, it is recommended that you change the headlight bulbs in pairs for best performance.
The 2005 Nissan Maxima headlight system has two options, a 9012 halogen bulb or a Xenon bulb available only through Nissan. The Xenon or High Intensity Discharge headlight is brighter than the halogen bulb but must be changed by a service tech at Nissan. The halogen system was more common in the Maxima and the 9012 bulbs are available at any auto parts store, allowing the vehicle owner to change the bulbs themselves. If you are not sure which type of headlight is in your Maxima, check with a Nissan service department, they can help you identify them.
Difficulty: Easy
Instructions
1
Open the hood of your Maxima and locate the large plastic cover on the rear of the headlight assembly. There is a single wire running to it and it is the largest of the sockets and caps on the headlight assembly.
2
Rotate the headlight bulb cap counterclockwise and remove it from the housing. Lay it aside then disconnect the electrical connector from the rear of the bulb by pulling it straight off the bulb. Unlock the spring clip that is retaining the bulb in the housing and swing it out of the way.
3
Remove the bulb from the headlight assembly and discard it. Install a new 9012 bulb into the housing, being careful not to touch the glass on the new bulb while installing it. Oils from your hands will cause the halogen bulb to overheat and fail.
4
Swing the locking spring clip over the bulb and hook it under the catch on the headlight assembly. Install the wiring harness connector on the back of the bulb and install the plastic headlight bulb cap on the rear of the headlight assembly. Turn the cap clockwise until it is tight.
5
Turn the headlight switch on and verify that the bulb is working. Cycle through the high and low beam positions, checking them both then shut off the lights.
Tips & Warnings
While you can change a single headlight bulb on your Maxima, it is recommended that you change the headlight bulbs in pairs for best performance.
How to Change Automatic Transmission Fluid in a Nissan Maxima
Change the automatic transmission fluid every 30,000 miles if you drive the Maxima under severe conditions. Otherwise, you can change the fluid less often. You should change the automatic transmission fluid if you recently purchased a new Maxima or don't know when the fluid was changed last. The following covers Nissan Maxima models from 1992 through 1998.
Difficulty: Moderately Challenging
Instructions
Things You'll Need
Ramps or a floor jack
Jack stands
Drain pan
Copper gasket (if needed)
Torque wrench
Funnel
New transmission fluid
Socket wrench
Solvent
New filter assembly
New fluid pan gasket
New self sealing retaining bolts
Change the Transmission Fluid Only
1
Raise the car with ramps or a floor jack and safely support it with jack stands. Place a large fluid drain pan beneath the transmission.
2
Remove the drain plug by pushing it in while unscrewing it with your hand. Wait for the fluid to finish draining from the transmission.
3
Reinstall the drain plug. If the transmission is a Re4f04 model, replace the copper gasket as well. Using a torque wrench, tighten the drain plug to 22 to 29 foot pounds.
4
Lower the Maxima to the ground. Using a funnel placed in the transmission filler tube, add Dexron III or the Genuine Nissan ATF specified for your vehicle. Alternate adding small amounts of new transmission fluid and checking the fluid level until the fluid level reaches the "MAX" mark on the dipstick.
Replace the Transmission Fluid and the Fluid Filter Re4f04 Models
1
Complete Steps 1 and 2 from Section 1. Remove the fluid pan retaining bolts with a socket wrench and take the pan off the transmission.
2
Clean the fluid pan with a safe solvent and set it aside to air dry. Throw away the old pan gasket.
3
Remove the filter mounting bolts, remove the filter and any seals or gaskets and install a new filter. Make sure you replace any new gaskets or seals onto the filter. Secure the filter by tightening the retaining bolts to 6.5 to 6.9 foot pounds with a torque wrench.
4
Position a new gasket on the fluid pan and install the pan onto the transmission. You must use new bolts for this, because they're self sealing bolts. Tighten the bolts to 6.5 to 6.9 foot pounds. Finish the procedure by completing Step 3 from Section 1.
Difficulty: Moderately Challenging
Instructions
Things You'll Need
Ramps or a floor jack
Jack stands
Drain pan
Copper gasket (if needed)
Torque wrench
Funnel
New transmission fluid
Socket wrench
Solvent
New filter assembly
New fluid pan gasket
New self sealing retaining bolts
Change the Transmission Fluid Only
1
Raise the car with ramps or a floor jack and safely support it with jack stands. Place a large fluid drain pan beneath the transmission.
2
Remove the drain plug by pushing it in while unscrewing it with your hand. Wait for the fluid to finish draining from the transmission.
3
Reinstall the drain plug. If the transmission is a Re4f04 model, replace the copper gasket as well. Using a torque wrench, tighten the drain plug to 22 to 29 foot pounds.
4
Lower the Maxima to the ground. Using a funnel placed in the transmission filler tube, add Dexron III or the Genuine Nissan ATF specified for your vehicle. Alternate adding small amounts of new transmission fluid and checking the fluid level until the fluid level reaches the "MAX" mark on the dipstick.
Replace the Transmission Fluid and the Fluid Filter Re4f04 Models
1
Complete Steps 1 and 2 from Section 1. Remove the fluid pan retaining bolts with a socket wrench and take the pan off the transmission.
2
Clean the fluid pan with a safe solvent and set it aside to air dry. Throw away the old pan gasket.
3
Remove the filter mounting bolts, remove the filter and any seals or gaskets and install a new filter. Make sure you replace any new gaskets or seals onto the filter. Secure the filter by tightening the retaining bolts to 6.5 to 6.9 foot pounds with a torque wrench.
4
Position a new gasket on the fluid pan and install the pan onto the transmission. You must use new bolts for this, because they're self sealing bolts. Tighten the bolts to 6.5 to 6.9 foot pounds. Finish the procedure by completing Step 3 from Section 1.
How to Change the Passenger Headlight on a Nissan Altima
The Nissan Altima was introduced in 1993. Since then, it has experienced four different redesigns. The Altima has always used halogen composite headlights capsules.To gain access to the passenger side headlight, the removal of other components is usually required. However, hiring a mechanic to perform the repair is not necessary for the determined do-it-yourself person.
Difficulty: Moderate
Instructions
Things You'll Need
Ratchet and metric socket set
Replacement bulb
1
Open the hood. Locate the two 10 mm coolant reservoir retaining bolts on the passenger side of the vehicle and then remove them using the ratchet and socket.
2
Remove the 10 mm bracket retaining bolt using the ratchet and socket. Remove the bracket.
3
Position the coolant reservoir out of the way to gain access to backside of the headlight assembly.
4
Turn the large plastic headlight cover counterclockwise to remove it from the back of the headlight assembly. Remove the cover.
5
Disconnect the wire harness clips from the headlight blades by pulling them off.
6
Press in and then upward on the headlight retaining ring holding the headlight bulb in place. Remove the bulb.
7
Align the new composite headlight into place without touching the glass bulb. Skin oils will greatly reduce and compromise the longevity of a halogen composite headlight.
8
Refasten the retaining ring to secure the headlight into the headlight assembly. Plug the wire harness onto the blade of the headlight and test for function. Reassemble the remaining components by reversing the procedure
Difficulty: Moderate
Instructions
Things You'll Need
Ratchet and metric socket set
Replacement bulb
1
Open the hood. Locate the two 10 mm coolant reservoir retaining bolts on the passenger side of the vehicle and then remove them using the ratchet and socket.
2
Remove the 10 mm bracket retaining bolt using the ratchet and socket. Remove the bracket.
3
Position the coolant reservoir out of the way to gain access to backside of the headlight assembly.
4
Turn the large plastic headlight cover counterclockwise to remove it from the back of the headlight assembly. Remove the cover.
5
Disconnect the wire harness clips from the headlight blades by pulling them off.
6
Press in and then upward on the headlight retaining ring holding the headlight bulb in place. Remove the bulb.
7
Align the new composite headlight into place without touching the glass bulb. Skin oils will greatly reduce and compromise the longevity of a halogen composite headlight.
8
Refasten the retaining ring to secure the headlight into the headlight assembly. Plug the wire harness onto the blade of the headlight and test for function. Reassemble the remaining components by reversing the procedure
How to Install Back Speakers in a Nissan Maxima
Nissan Maxima models come equipped with factory-installed stereo systems. However, many audio enthusiasts will replace components of the factory stereo, including the rear speakers, with high-performance aftermarket equipment. The back speakers are often one of the first sets of speakers that drivers change, since aftermarket speakers usually have improved bass response.
Difficulty: Moderate
Instructions
Things You'll Need
Phillips screwdrivers
Replacement speakers
Wire cutters/strippers/crimpers
Quick slide connectors
1
Open the trunk of the vehicle, and crawl in on your back so that you can see the underneath of the vehicle's rear deck. You'll see two speakers mounted underneath the rear deck.
2
Remove the four screws surrounding each of the speakers. These screws don't hold the speaker in, but instead secure the grille that covers each of the speakers on the inside of the car.
3
Go into the back seat of the car. Pull each of the grilles off the rear deck by lifting straight up from the speaker. This reveals each of the speakers.
4
Undo the screws holding the speakers into the rear deck, and then pull the speakers out of the rear deck. Each speaker will have a wiring plug clipped to it. Pull the wiring plugs out from the sockets on the factory speakers.
5
Cut off the wiring plugs on the factory speakers. Strip 1/2 inch of insulation off each lead so that you have 1/2 inch of bare wire on each lead. Crimp quick slide connectors that match the size of the new speaker's terminals onto each lead by sliding each connector onto the bare wire and then crimping the connector in place.
6
Slide the quick slide connectors onto the terminals of the new speakers, then place the speakers into the openings. Screw the new speakers into place with the screws you removed earlier.
7
Replace the grilles onto the speakers, and then go back into the trunk and secure the grilles.
Difficulty: Moderate
Instructions
Things You'll Need
Phillips screwdrivers
Replacement speakers
Wire cutters/strippers/crimpers
Quick slide connectors
1
Open the trunk of the vehicle, and crawl in on your back so that you can see the underneath of the vehicle's rear deck. You'll see two speakers mounted underneath the rear deck.
2
Remove the four screws surrounding each of the speakers. These screws don't hold the speaker in, but instead secure the grille that covers each of the speakers on the inside of the car.
3
Go into the back seat of the car. Pull each of the grilles off the rear deck by lifting straight up from the speaker. This reveals each of the speakers.
4
Undo the screws holding the speakers into the rear deck, and then pull the speakers out of the rear deck. Each speaker will have a wiring plug clipped to it. Pull the wiring plugs out from the sockets on the factory speakers.
5
Cut off the wiring plugs on the factory speakers. Strip 1/2 inch of insulation off each lead so that you have 1/2 inch of bare wire on each lead. Crimp quick slide connectors that match the size of the new speaker's terminals onto each lead by sliding each connector onto the bare wire and then crimping the connector in place.
6
Slide the quick slide connectors onto the terminals of the new speakers, then place the speakers into the openings. Screw the new speakers into place with the screws you removed earlier.
7
Replace the grilles onto the speakers, and then go back into the trunk and secure the grilles.
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