2004 VW TOUAREG V8. THESE VEHICLES EXHIBITS FREQUENT BUT INCONSISTENT DELAY IN THROTTLE RESPONSE. THIS ISSUE ARISES MOST OFTEN IN HEAVY TRAFFIC WHEN THE DRIVER COMES TO A ROLLING STOP. WHEN SHIFTING INPUTS FROM THE BRAKE TO THE THROTTLE THE VEHICLE WILL FREQUENTLY EXHIBIT A 1-2 SECOND DELAY BEFORE THERE IS ANY RESPONSE FROM THE ENGINE. THIS HAS TWO DANGEROUS CONSEQUENCES. FIRST, THE DRIVER MAY INCREASE THE THROTTLE PRESSURE WAITING FOR A RESPONSE, THEN GETTING MORE THEN EXPECTED ACCELERATION WHEN THE ENGINE FINALLY RESPONDS. SECOND, THE DRIVER COULD BE LEFT SITTING IN AN ONCOMING LANE WAITING FOR THE ENGINE TO RESPOND AND TAKE THE VEHICLE SAFELY ACROSS THE INTERSECTION. I HAVE REPORTED THIS TO TWO DIFFERENT VW DEALERS, ONE OF WHICH TURNED THE COMPLAINT TO VW. THERE HAS BEEN NO ACTION TAKEN, OR FURTHER RESPONSE FROM VW. *JB
2011
FUEL/PROPULSION SYSTEM
GLOW PLUG WARNING LIGHT CAME ON AND VEHICLE LOST THROTTLE RESPONSE -- DID NOT STOP RUNNING BUT FELT LIKE RUNNING ON 1/2 CYLINDERS. PULLED OFF THE HIGHWAY AT THE NEXT OPPORTUNITY; VEHICLE DIED AT THE END OF THE OFF-RAMP AND COULD NOT BE RE-STARTED. VEHICLE TOWED TO NEAREST VW DEALER, WHO SAYS THAT THE ENTIRE FUEL SYSTEM MUST BE REPLACED FROM BACK TO FRONT. DEALER CLAIMS THAT REAR LIFT PUMP CAUSED THE INCIDENT BUT ALSO SAYS THE HPFP (INJECTOR PUMP) FAILED. THREE WEEKS INTO THE INCIDENT THE VEHICLE IS STILL BEING REPAIRED. *TR