- The problem
- On certain trucks equipped with aset ac model engines, the engine as configured with an external exhaust gas recirculation system makes servicing the fuel injection lines difficult when using traditional tools. Therefore, it is possible for fuel leaks to develop when removing and installing the fuel injection lines.
- The risk
- A leak in the fuel injection line may spray fuel on the hot surfaces of the exhaust gas recirculation system, which could result in an engine fire.
- The fix
- Dealers will replace the fuel injection lines free of charge. Note: this recall supersedes a previous campaign conducted in 2006 (please see 06v392). The recall began on september 11, 2007, with subsequent mailings every six weeks until april 2008. Owners may contact mack at 800-528-6586.
Vehicle safety record
2004 Mack CHN Problems, complaints & recalls
No owner complaints about the 2004 Mack CHN have been filed with NHTSA. It is covered by 7 recalls, the latest in September 2007 for the fuel system, diesel.
NHTSA data checked
CAbout as many problems as a typical CHN year, for its age
- Complaints
- 0
- Recalls
- 7
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
2004 Mack CHN recalls 7
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- On certain trucks, a leak in the aset ac fuel injection line may spray fuel on the exhaust gas recirculation pipes that carry hot exhaust gases .
- The risk
- THIS COULD POTENTIALLY RESULT IN AN ENGINE FIRE.
- The fix
- Mack has issued a stop work on this campaign under further notice (2-22-2007). The remedy does not adequately address the issue on all vehicles. Mack will re-release the recall in the near future. (Please see nhtsa no. 07V159/mack recall no. Sco323 for vehicles that have had this repair already performed.) This recall has been superseded (please see 07v401/sc0324).
- The problem
- On certain trucks, the fuel line crossover bracket may prematurely fail and unexpectedly fall to the road. The location and size of the bracket draws a concern to the bracket being picked up and thrown by the drive axle wheels.
- The risk
- If the crossover bracket falls a crash may occur without prior notice.
- The fix
- Dealers will replace the brackets free of charge. The recall began on august 20, 2006. Owners may contact mack trucks at 1-800-528-6586.
- The problem
- On certain vehicles. The brake cam tubes on the drive axle may not have been greased.
- The risk
- The brake cam journal may corrode which could lead to the brakes dragging. This could result in a vehicle fire.
- The fix
- Dealers will remove the brake camshaft to inspect for corrosion. The brake camshaft will be replaced as required free of charge. The recall began on january 18, 2006. Owners may contact mack at 1-336-393-2233.
- The problem
- On certain heavy duty class 8 trucks equipped with air suspension proprietary axles and adjustable lengh torque rods, an interference between the adjustable torque rod and the brake chamber on the left side of the chassis may exist. The spring brake chamber clamp ring could possibly be distorted over time resulting in loss of air, which could lead to the spring brake at the chamber being inadvertently applied.
- The risk
- Braking capability would be diminished, increasing the risk of a crash.
- The fix
- Dealers will repair and replace the adjustable torque rod, with a fixed length torque rod, inspect and repair the brake chamber free of charge. The recall began on may 3, 2005. Owners may contact mack trucks at 610-709-2131.
- The problem
- On certain trucks equipped with the fxl axle and meritor 16.5 X 5 brakes with dust shields, there may be interference between the dust shield mounting bolt and the knuckle on the front axle. As a result of the interference, the bolt joint between the wheel end and the knuckle may not meet the torque requirements.
- The risk
- This could result in vibration or brake performance issues. Braking capability would be diminished, increasing the risk of a crash.
- The fix
- Dealers will remove the hub and brake assembly to install a new dust shield free of charge. The recall began on august 17, 2005. Owners may contact mack trucks 610-709-2131.
- The problem
- On certain heavy duty class 8 diesel trucks equipped with aset ac engines, the location of the fuel inlet hose may result in overheating or abrasion of the hose, which may lead to a premature failure.
- The risk
- If the hose fails, fuel can be sprayed on the exhaust manifold, which could potentially lead to an engine compartment fire.
- The fix
- Dealers will repair and replace the fuel inlet hose free of charge. The recall began on february 14, 2005. Due to some quality and supply issues with parts to support this safety recall, owners may have been informed during april 2005,that the safety recall was on hold. These issues have now been resolved. For owners who have not had their vehicle(s) repaired, contact a mack parts and service center immediately to schedule an appointment to have your vehicle(s) repaired. Owners may contact mack trucks at 610-709-2131.
What owners say
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No complaints about the 2004 Mack CHN yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mack CHN: every year compared
All CHN yearsQuestions about the 2004 Mack CHN
Does the 2004 Mack CHN have any recalls?
Yes - NHTSA lists 7 recalls for the 2004 Mack CHN: fuel system, diesel (September 2007); fuel system, diesel (October 2006); fuel system, diesel (August 2006); service brakes, air (September 2005) and more. Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 2004 Mack CHN had?
None have been filed with NHTSA so far.
Is the 2004 Mack CHN a reliable vehicle?
Its Safety Index is 50 out of 100 (grade C: about as many problems as a typical Mack CHN year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 2004 Mack CHN has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data