How to Replace Throttle Body 02-06 Nissan Altima
Difficulty: Intermediate · About 75 min · Nissan Altima
Replace the throttle body on a 2002–2006 Nissan Altima, cleaning its mating surface and relearning the electronic throttle and idle settings after reconnecting the intake.
Tools you will need
- 5mm Hex Wrench
- Socket Extensions
- Flat Blade Screwdriver
- Paper Towels
- 8mm Socket
- 10mm Socket
- Ratchet
- Brake Parts Cleaner
Parts and supplies
- Throttle body
- Throttle body gasket
Steps
Remove the intake hose
Loosen the breather and intake hose clamps, then disconnect the breather hose. Separate the intake hose from the throttle body and air filter housing and move it aside.
Remove the throttle body
Disconnect the throttle body wiring harness and remove its four mounting bolts. Lift the throttle body away from the intake manifold and remove the old gasket.
Install the replacement throttle body
Wipe the mating surface clean with cleaner applied to a rag. Fit the new gasket, position the throttle body, and tighten its bolts evenly to the vehicle's specification before reconnecting the harness.
Reinstall the intake hose
Reconnect the intake and breather hoses and tighten their clamps. Inspect all connections for gaps and verify the wiring harness is locked in place.
Perform throttle relearn procedures
Follow the Altima service procedure for accelerator pedal release, throttle valve closed-position, and idle-air-volume learning. Keep the pedal untouched during the key cycles and confirm the idle stabilizes without a warning light.
Check your vehicle’s repair manual for exact specifications and fit.