Service bulletins for the 1998 Infiniti QX4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
83 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Throttle and cruise control are shown. Show all
| ITB99039B | 2002-07-11. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR (TPS) ADJUSTMENT PROCEDURE. *TT |
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| ITB99039B | 2002-06-20. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING REVISED THROTTLE POSITION SENSOR ADJUSTMENT PROCEDURE. *SLC |
| ITB01025 | 2002-05-21. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. SUBJECT REGARDING FUEL INJECTOR CLEANING FOR VEHICLES WITH ROUGH IDLE, HESITATION OR MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODES P0300 - P0306 STORED. *TT |
| ITB01006 | 2002-03-19. Service bulletin. VEHICLE SPEED CONTROL. SOME VEHICLES MAY EXHIBIT IDLE SPEED FLUCTUATION, INCORRECT IDLE SPEED, INCREASED ACCELERATOR PEDAL RESISTANCE, DIFFICULTY ACCELERATING SMOOTHLY FROM A STOP. *TT |
| ITB99039A | 2001-04-12. Service bulletin. VEHICLE SPEED CONTROL. SUBJECT REGARDING INFINITI REVISED TPS (THROTTLE POSITION SENSOR) ADJUSTMENT PROCEDURE. *TT |
| ITB01006 | 2001-04-03. Service bulletin. VEHICLE SPEED CONTROL. SERVICE INFORMATION FOR VEHICLES EXHIBITING IDLE SPEED FLUCTUATION; INCORRECT IDLE SPEED; INCREASED ACCELERATOR PEDAL RESISTANCE AND / OR DIFFICULTY ACCELERATING SMOOTHLY FROM A STOP. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.