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Car Forum / Driving, Maintenance, Tuning / General Car Topics / August 2006Speedo needle jumping
Hello Folks. 1981 Pontiac Parisienne. Aftermarket ( I think ) cruise control. Speedo guage needle jumps + fluctuates. Cleaned + lubed cable from cruise control box to speedo -- no change. Next will do same for cable to cruise control box from tranny. If no change, contemplating taking apart cruise control box + lubing + cleaning inner gears connecting both cables. Q: Is this possible .. can CC box be disassembled to clean + lube inner connecting gears? There are 4 nuts on side cover where cables connect to box. The speedo itself checks out OK . Please reply to NG. Thanks, -JS >Q: Is this possible .. can CC box be disassembled to clean + lube >inner connecting gears? >There are 4 nuts on side cover where cables connect to box. The needle jumps because the cable whips in it's casing as it binds. Lubing both cables is a good idea using Lubriplate or a motor honey (any thick engine additive - Morey's, XM 3, Lucas, STP). Long easy curves in the cable are better that sharp ones - that's where most binding occurs. If that fails to fix, then new cables my be needed. Pete |
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