Fuel:throttle linkages and control return spring
Defect Summary
Two throttle return spring defects are involved in this recall. (1) buses equipped with caterpillar engines may have a throttle return spring that breaks and prevents the throttle from returning to idle position when the driver's foot is removed from the accelerator control; (2) buses equipped with cummins vt-225 engines may have the throttle return spring connected to the throttle slave cylinder instead of the fuel injection pump lever. if failure occurs in the acceleration control system, the engine may accelerate to its maximum governed rpm. consequence of defect: in either case, throttle control will be lost which may result in an accident.
Corrective Action
A repair kit consisting of new spring, mounting bracket and proper repair instructions will be shipped to each owner at no charge and the owner may make his own repairs, or have a thomas distributor or a reputable local shop make the repairs.
Similar Recalls
Other recalls from Thomas Built Buses, Inc. or involving Vehicle Speed Control.
FAQ: Recall 86V079000
Your rights, the repair process, and what each field on this page means.
What is recall 86V079000?
NHTSA recall 86V079000 was issued by Thomas Built Buses, Inc. on June 16, 1986. It addresses: Fuel:throttle linkages and control return spring. The recall affects approximately 942 vehicles, with the defect involving the Vehicle Speed Control component.
How do I get this recall repaired?
Contact any authorized Thomas Built Buses, Inc. dealer and reference NHTSA recall ID 86V079000 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.