TL*THE CONTACT OWNS A 2000 JEEP WRANGLER. WHILE DRIVING 30 MPH, THE CONTACT APPROACHED A RED LIGHT AND APPLIED THE BRAKES TO COME TO A COMPLETE STOP. WHEN HE REMOVED HIS FOOT FROM THE ACCELERATOR PEDAL, THE VEHICLE FAILED TO DECREASE IN SPEED. INSTEAD, THE ENGINE REVVED A BIT HIGHER. THE CONTACT DEPRESSED THE BRAKED PEDAL AND THE VEHICLE BEGAN TO SLOWLY DECREASE IN SPEED; HOWEVER, IT DID NOT COME TO A COMPLETE STOP. THE CONTACT REAR ENDED ANOTHER VEHICLE. THERE WERE NO SERIOUS DAMAGE AND THE AIR BAGS FAILED TO DEPLOY. THE CONTACT BELIEVES THAT IF CHILDREN HAD BEEN PRESENT, THE CRASH COULD HAVE BEEN A LOT MORE SERIOUS. HE TOOK THE VEHICLE TO A REPAIR SHOP FOR INSPECTION AND WAS INFORMED THAT THE FAILURE WAS VERY COMMON; HOWEVER, NO RECALLS HAD BEEN ISSUED. THE VIN WAS UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 69,000.