Interpretation ID: nht95-4.92

TYPE: INTERPRETATION-NHTSA

DATE: December 6, 1995

FROM: Jeffrey S. Bakst -- Attorney at Law

TO: Dorothy Nakama -- NHTSA

TITLE: FMVSS Standard 124 "Accelerator Control Systems"/Mitsubishi Motorist Corporation Carburetor

ATTACHMT: 12/28/95 letter from Samuel J. Dubbin to Jeffrey S. Bakst (A44; Redbook 4; Std. 124; VSA 30118)

TEXT: First, I want to inform you we are dealing with a 1988 Dodge Ram 50 truck manufactured by Mitsubishi in Japan, sold in July, 1988. The accident involved occurred in December, 1990. I would like to acquire the National Highway Traffic Safety Administrat ion's opinion on the following questions:

1. If the manufacturer discovers a safety-related problem after the vehicle has been sold to the first purchaser in good faith, does the manufacturer have a legal duty to notify NHTSA and/or the purchaser of this problem?

If yes, what must a manufacturer do for the purchaser?

2. Assume there is a safety-related defect in a brand new carburetor that results in engine overspeed. If the "two sources of energy" are not sufficient to return the throttle to idle position when the driver removes the actuating force from the accele rator control in use, does the carburetor fall to comply with FMVSS 124?

I can represent to you that we took a brand new carburetor and proved that if the secondary throttle plate were to get stuck shut for whatever reason, the primary throttle linkage would bind on the secondary throttle linkage, causing the primary throt tle plate to get stuck in a wide open throttle position, which results in engine overspeed. In essence, the two sources of energy on this carburetor are not sufficient to return the throttle to the idle position whenever the driver removes the actuating force from the accelerator control. Mitsubishi's own test on a brand new carburetor proved that if there was a malfunction in the secondary throttle plate, that the two (2) sources of energy were insufficient to return the throttle to idle position.

As I explained, time is truly of the essence. Mr. Bode requested his letter to attach to his Appellate Brief. I now have to respond to his brief, and I must have your report by the end of this year, if I am going to be able to use it in the appeal.

If you need additional information, please let me know.