you may need to pull apart the dash and re-seat the the cluster into the connectors
how many pounds do 86 cutlass weight
You will need feeler gauges, a ring spacer and separation tool, the correct specs for their correct placement on the piston and the gap specs.
yes it will fit
Try nada.com
Under the hood, on mine.
... in what way?
With a piston ring compressor.
81-86 are the same. 87 is the same as the 88 supreme classic. 87 grills will NOT fit an 86 without changing the entire header assembly.
To remove gauges from a Cutlass A, first, ensure the vehicle is turned off and the keys are removed for safety. Carefully use a flathead screwdriver or a trim removal tool to pry off the gauge bezel, taking care not to damage any surrounding panels. Once the bezel is removed, disconnect the wiring harness from each gauge and unscrew the gauges from their mounting points. Finally, pull the gauges out gently and set them aside for replacement or repair.
There is a fuse for the gauges, check it.
the idle should be about 900 RPM in park or neutral.
It is located in the oil pan on the botom side of the engine.