Eldorado V8-350 57L DSL (1984) Speedometer Cable Customer Interest
Speedometer Cable: Customer Interest
Cruise Control - Surging Above 45 MPH
Bulletin No. T 85-42
File In Group
9
Number
25
Date
Jan. '85
SUBJECT:
CRUISE CONTROL SURGING CONDITION AT HIGHWAY SPEEDS
MODELS AFFECTED: 1983-1985 ELDORADO AND SEVILLE
Some vehicles may experience a slight surging condition above 45 MPH with cruise control engaged. This condition may be accompanied by a slight
accelerator pedal movement. However, the condition may not result in speedometer fluctuation either with or without digital speedometer head. If this
slight surge condition is experienced, the following procedure should be followed:
1.
Verify that surging condition exists only while cruise control is engaged.
2.
Check the vacuum system for disconnected or leaking hoses.
3.
Temporarily secure the speedometer cable to the brake booster and servo mounting bracket with a tie wrap to eliminate cable whip.
4.
Test drive vehicle. If the condition is reduced, replace the speedometer cable and case.
NOTE:
Before installing replacement speedometer cable, lube the replacement cable and check that it turns freely in the case.