Resources for the Repair and Maintenance of your Infiniti QX4
Infiniti QX4 Models:
Infiniti QX4 Problems
Erratic Idle Speed and Increased Accelerator Pedal Effort
Carbon deposits on the throttle body may cause any of the following issues: Idle speed fluctuation, incorrect idle speed, difficulty accelerating way from a stop, and or increased accelerator pedal resistance. Our technicians tell us a revised throttle body and associated parts are available to resolve this issue.
Evap System Fault Due to Debris From a Failed Charcoal Canister
Failure of the EVAP System charcoal canister may allow charcoal debris to infiltrate the EVAP system causing other failures. Cleaning the vapor lines to ensure the system is clear of debris is important when repairing EVAP system failures.
Check Engine Light With Code P0138, P0140, P0158, and/or P0160
The Check Engine Light may illuminate with code P0138, P0140, P0158, and/or P0160 stored. Our technicians recommend replacing the rear oxygen sensor, and reprogramming the vehicle's powertrain control module (PCM) with upgraded software to correct this concern.
Front Catalytic Converters are Prone to Cracking
Front catalytic converters are prone to cracking along the seams of the converter itself. Most repair shops can successfully weld the seems to prevent exhaust leakage.
Loss of Power and/or Check Engine Light With Code P0171 and/or P0174
The mass airflow sensor may fail resulting in a loss of power and/or Check Engine Light illumination with code P0171 and/or P0174 stored. Our technicians recommend replacing the failed airflow sensor to correct this concern.
Infiniti QX4 Recalls (Recent)
Nissan Pathfinder Recall 10V312000
Summary: NISSAN IS RECALLING FORTY-SIX CERTAIN MODEL YEAR 2002 PATHFINDER AND INFINITI QX4 VEHICLES MANUFACTURED FROM AUGUST 24, 2001 THROUGH AUGUST 28, 2001. THE AIR BAG INFLATOR CONTAINS PROPELLANT WAFERS THAT ARE REQUIRED TO PROPERLY DEPLOY THE FRONT PASSENGER AIR BAG. DUE TO IMPROPER PROPELLANT WAFER INSTALLATION DURING THE AIR BAG INFLATOR ASSEMBLY PROCESS, SOME AIR BAG INFLATORS MAY BE MISSING ONE OF THE WAFERS. AS A RESULT, THE REMAINING WAFERS IN THE INFLATOR USED FOR THE DEPLOYMENT OF THE FRONT PASSENGER AIR BAG MAY, OVER TIME, BREAK UP INTO POWDER DUE TO NORMAL VIBRATION EXPERIENCED WHILE DRIVING. THIS CAUSES THE COMBUSTION RATE OF THE PROPELLANT TO INCREASE INSIDE THE INFLATOR, WHICH CAN LEAD TO INTERNAL PRESSURE RISING SUDDENLY DURING AIR BAG DEPLOYMENT.
Learn more »Infiniti QX4 Recall 01V282000
Summary: VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. SOME OF THE BRACKETS USED TO ATTACH THE TWO GAS STRUTS TO THE REAR DOOR (HATCH) MAY HAVE BEEN IMPROPERLY MADE. AT HIGH AMBIENT TEMPERATURES, THE INCREASE IN GAS PRESSURE IN THE STRUT(S) COULD CAUSE ONE OR BOTH BRACKETS TO BEND, RESULTING IN THE STRUTS DETACHING FROM THE BRACKET(S) WHEN OPENING OR CLOSING THE REAR DOOR.
Learn more »Infiniti QX4 Recall 00V410000
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES MAY HAVE AN IGNITION LOCK ASSEMBLY WITH IMPROPERLY SEATED KEY CYLINDER CAP CONNECTOR PINS. VIBRATION CAN CAUSE THE CONNECTING PINS TO LOOSEN AND/OR FALL OUT ALLOWING THE KEY CYLINDER CAP TO DISENGAGE FROM THE KEY CYLINDER.
Learn more »Infiniti QX4 Recall 07V435000
Summary: ON CERTAIN VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, KENTUCKY, MASSACHUSETTS, MAINE, MARYLAND, MICHIGAN, MINNESOTA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, TENNESSEE, VERMONT, VIRGINIA, WEST VIRGINIA , WISCONSIN AND THE DISTRICT OF COLUMBIA, DURING THE COATING PROCESS OF THE FUEL FILLER TUBE ASSEMBLY, AN INSUFFICIENT AMOUNT OF COATING MAY HAVE BEEN APPLIED AT THE LOWER MOUNTING BRACKET. THIS COULD RESULT IN AN OPENING IN THE COATING WHICH CAN ALLOW WATER TO ENTER AND MAKE CONTACT WITH THE BARE METAL OF THE TUBE.
Learn more »Rust May Form on the Strut Tower Housing
RepairPal Expert Overview:
In areas where winter road salt is used, a mixture of snow/water and salt may enter an assembly location hole in the upper strut housing. This corrosive mixture can collect on the mating surface of the strut housing panel and the inner hood ledge assembly; over time, this can cause rusting of the strut tower housing. The rust can weaken the housing, causing it to crack and pull away from the inner hood ledge assembly. This can lead to grinding noises and increased steering effort, which, if severe enough, can cause the steering column to break. This would result in a loss of steering control, increasing the risk of a crash. Dealers will inspect the strut housing and repair the vehicles as necessary. An interim notification letter should be mailed to owners prior to May 16, 2011.
Learn more »Infiniti QX4 Questions and Answers
what is the estimated cost for replacing a fuel pump
1997 QX4 Infiniti SUV. Cause I have to put in a part and I need to know how it goes. I'm trying not to pay for it to be put in...It seems easy just don't know how it goes. Can you pls tell me...tha...
My headlights has no dim but bright is working perfectly fine
I have never had this problem getting the shifter out of park. My foot is on the brake I've tried moving it around every which way. Is this a major problem or just something minor.
How much will it cost me in parts and labor to install control arms?
Infiniti QX4 Stories
i have an infinity qx4 2001 2wd, the speedometer dont go beyond 45 no matter how fast i go. I changed the instrument cluster and the speed sensor inside the transmission and it didnt work. I went to nissan dealership and they diagnosed the car and said the rare passenger speed sensor is bad.When i try to inquire from infinity dealership about the parts they told me the car does not have a speed sensor at the back that what it has was abs sensor and dont have anything to do with the speedometer. can someone tell me where the speed sensor is
Probably the best car I have ever owned. Approx 180,000 miles just took to Infiniti dealer for strut housing recall. Has been a wonderful car. Would definitely buy another.
i have a 01 QX4 and has been nothing but a problem.. I have replaced the radatior, therostat, spark plugs, coil pack, HID box, and my most recent incident is replacing the waterpump, it also needs front shocks. ive had acouple infiniti's and they were all great but this truck gives infiniti a bad name. i have only owned it for 6 months and all these problems!! On top of all that the dang thing has wiring issues the back window will open by itsself at times the radio will turn off by its self and when i roll up the windows sometimes it will roll up then right back down?
I own a 2002 Infinity QX4 THAT HAS HAD TO HAVE EMMISSIONS REPAIRS. HAVE HAD TO REPLACE BOTH CATALYC CONVERTERS LEFT AND RIGHT SIDES W/O'2 SENSORS (NOT CHEAP)...REPLACED LOW BEAM BALLAST CONTROL UNIT (VERY EXPENSIVE PART AND DEALER ITEM ONLY). NOW EXPERIENCING SWAYING WHILE DRIVING ON HIGHWAY...HAVE HAD NEW TIRES INSTALLED AND WHEEL ALIGNMENT DONE...THIS CAR HAS BEEN NOTHING BUT A MONEY PIT...NOW TICKING IS GOING ON FROM THE ENGINE...PRAY AND HOPE THE ENGINE IS NOT ABOUT TO GO....I GET REGULAR SCHEDULED OIL CHANGES...
2nd OWNER OF THIS 1999.5 QX4. HAS 172000 MILES. BY FAR BEST VEHICLE I HAVE OWNED. STILL QUIET AND TIGHT WITH JUST SCHEDULED MAINT.