Spring hangers on our international 9900i trucks, on the rear drive axles have been cracking and breaking into two pieces. We have had 2 or 3 so far that have broken. If they are not caught in time the axles could move out of alignment and cause the truck to dog walk out of their lane of travel.
The worst 2006 International 9900I problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Suspension1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Suspension1
Recalls 3
Exterior lighting: back up lights
- What is wrong
- Navistar, Inc. (Navistar) is recalling certain 2000-2003 International 8100, 2001-2003 International 9100i, 2001-2007 International 9400i, 2001-2010 International 9200i, 2002-2007, 2009 International 8500, 2003-2007, 2013 International 9900i, 2003-2018 International 8600, 2004, 2007 International 9900iX, 2008-2018 International ProStar, 2010-2011, 2013, 2016 International LoneStar, 2011-2012, 2016 International 4400, 2017-2024 International LT, 2018-2024 International RH, 2019-2021 International LS, 2019-2024 International MV vehicles. The back-up lights offer low visibility when the vehicle is in reverse and bobtail mode. Also, the vehicles have not been equipped with additional unobstructed back-up lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
- Risk
- Low visibility or obstructed back up lights may not alert other drivers that the vehicle is backing up, increasing the risk of a crash.
- Remedy
- Dealers will replace the existing rear stop/turn signal lights, free of charge. Owner notification letters were mailed May 06, 2024. Owners may contact Navistar's customer service at 1‑800‑448‑7825. Navistar's number for this recall is 23514.
Recall number 23V353000 · Recall details
Engine and engine cooling
- What is wrong
- Navistar is recalling certain model year 2003 through 2008 heavy trucks manufactured between april 1, 2003 and december 21, 2007, equipped with caterpillar c15 engines. The variable valve actuation (vva) oil line may wear against the p-clips retaining the oil line, causing an oil leak.
- Risk
- An oil leak could result in a fire.
- Remedy
- Navistar is working with caterpillar to repair the engines free of charge. Please see 09e-020. The safety recall began on october 23, 2009. Owners may contact caterpillar at 1‑800‑447‑4986 or navistar at 1‑260‑461‑1890.
Recall number 09V386000 · Recall details
Electrical system: 12v/24v/48v battery: cables
- What is wrong
- On certain 4x2 and 6x4 heavy duty trucks, the positive battery cable between the batteries and the starter may rub against an electrical ground cable between the starter and frame rail.
- Risk
- This chafing could cause an electrical short and/or fire.
- Remedy
- Dealers will inspect the vehicles to determine if any chafing has occurred between positive and negative cables. If there is no evidence of chafing, then a saddle clamp will be installed to ensure cables will not rub. If there is evidence of chafing, the damaged cables will be replaced and the swivel saddle clamp installed. The recall began on august 22, 2005. Owners may contact international at 1‑800‑448‑7825.
Recall number 05V296000 · Recall details
Technical service bulletins for the 2006 International 9900I 90
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This article provides guidance to dealership personnel, Technical Services personnel, Dealer Service...
- There are two ways to program 5000 and 9000 odometer
- This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files
- Engine replacements for all International engines will need to follow this procedure.
- This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle...
- This document will guide the user through understanding Prop Shaft Codes and understanding the variations...
- In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of...
- Title: Service Portal iKNow Feedback Case Types Applies To: All
- Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
- Title: A/C Refrigerant and Oil Capacities Applies To: All current models
What 2006 International 9900I owners say
Most recent owner complaints, unedited.
Compare the 2006 International 9900I
Other model years
20032006
Questions about the 2006 International 9900I
Is the 2006 International 9900I reliable?
Owners have filed 1 complaint about the 2006 International 9900I, fewer than a typical 9900I model year.
What is the most common problem with the 2006 International 9900I?
Suspension, with 1 complaint.
How many recalls does the 2006 International 9900I have?
3 recalls, covering exterior lighting, engine and engine cooling and electrical system.
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