1999 Infiniti QX4 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Infiniti QX4

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1999 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.

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.

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.

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1999 Infiniti QX4 Questions

Has anyone had any experience with replacing the converter box on a 99 QX4? (1 answer)

With acceleration my 99 infiniti QX4 will make a loud metal rattling sound from under the center front of the car. My best guess is the converter box? Any help pretty please?

My car 3.3L uses up so much gas/petrol. what could be the problem (1 answer)

i have compared with other 3.3L engines and mine uses more gas/petrol for equal distance covered.

The car body rolls, rocks from left to right at some speeds (2 answers)

when accelerating from 50 mph to 70 mph the body rocks sideways, from right to left.

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1999 Infiniti QX4 Recalls

Rust May Form on the Strut Tower Housing

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.

Recall 07V435000
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 ...

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1999 Infiniti QX4 Reviews

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.

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