RoadVitals

2003 Mack Cv Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Latest May 20, 2010
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2003 Mack Cv, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Body & structure150.0%
  • Brakes150.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Body & structure

Reports naming the vehicle structure, frame, body panels, doors, hood and trim.

1
report

From owner reports, verbatim

TL* THE CONTACT OWNS A 2003 MACK CV. THE CONTACT STATED THAT THE SIDE FRAME RAILS WERE BREAKING. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR FURTHER INSPECTION. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE UNKNOWN.

NHTSA ID 10331356 · filed May 20, 2010

Too few reports in this category for a page of its own — they appear in the full complaint list.

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

1
report

From owner reports, verbatim

THIS VEHICLE IS A 2003 MACK TRUCK MODEL CV AND IS A STRAIGHT FRAME DUMP TRUCK WITH THREE REAR TANDEM AXLES. STOPPING IS ACHIEVED THROUGH A STANDARD AIR BRAKE SYSTEM WHERE COMPRESSED AIR IS USED AS THE ENERGY MEDIUM. THE BRAKE PEDAL EFFORT OF THE OPERATOR IS USED ONLY TO MODULATE THE AIR PRESSURE APPLIED TO THE BRAKE CHAMBERS. THIS TRUCK CONFORMS TO THE DUAL BRAKE SYSTEM. ALTHOUGH THE ENERGY SOURCE IS COMPRESSED AIR, THE TRANSMISSION OF ENERGY FROM THE BRAKE CHAMBER TO THE FRICTION SURFACES INVOLVES LEVER ARMS AND CAMS. THE COMPRESSED AIR IN THE SPRING BRAKE CHAMBER MAINTAINS PRESSURE ON THE SPRING DURING NORMAL OPERATION. WHEN THE BRAKES ARE ACTIVATED, THE AIR IS RELIEVED ALLOWING THE SPRING TO DECOMPRESS AND APPLY THE FRICTION SURFACES TO THE DRUMS THROUGH THE MECHANICAL LINKAGE. THE FIRE PATTERNS INDICATE THAT THE FIRE WAS LOCALIZED AND ORIGINATED FROM FRICTION PRODUCED BY THE BRAKE PADS AGAINST THE DRUM ON THE CENTER RIGHT REAR TANDEM WHEELS. THE FRICTION PRODUCED TEMPERATURES IN EXCESS OF THE IGNITION TEMPERATURE OF THE TIRES CAUSING THEM TO IGNITE. THERE WAS NO PHYSICAL EVIDENCE OF ANY ELECTRICAL FAILURE. THE SPRING BRAKE CHAMBER IS IDENTIFIED AS MGM 3431157, M092702, 190E 4100 P7. CONCLUSION THE FIRE WAS LOCALIZED AND PRODUCED BY FRICTION. THE FRICTION RESULTED FROM THE BRAKE PADS AGAINST THE DRUMS OF THE CENTER REAR RIGHT TANDEM BRAKES. THIS FRICTION PRODUCED SUFFICIENT TEMPERATURES TO IGNITE THE TIRES. THE APPLICATION OF THE BRAKES THAT PRODUCED THE FIRE RESULTED FROM A FAILURE OF THE SPRING BRAKE CHAMBER OR ITS CONTROLLING SERVICE RELAY VALVE. THE LOSS OF AIR PRESSURE RESULTED IN THE SPRING ACTIVATION OF THAT PARTICULAR BRAKE. *JB

NHTSA ID 10137097 · filed Sep 20, 2005

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .