Exhaust System - Exhaust Boom and Idle Shake
Model Year 1983Bulletin No. 83-63
File In Group 64
Number 4
Date Feb., 83
SUBJECT: Exhaust Boom and Idle Shake On 1983 Skylarks and Centurys Equipped With 2.5L, L-4 Engines (VIN Code "R")
An exhaust boom may occur on 4-cylinder 1983 Skylarks and Centurys in the 1500 to 1700 rpm range.
The condition can usually be alleviated by loosening the two (2) ball socket bolts at the catalytic converter attachment, raising the converter slightly to remove excess pressure on the rear exhaust hangers and retorquing the bolts to 14-24 N-m (10-17 lb.ft.).
Inspect the system to ensure that adequate clearance is maintained after repositioning.
WARRANTY INFORMATION
Labor Operation L2004
Time Allowance .3 Hour.
Trouble Code 92