Even with a bad engine mount it shouldn't shake that much.
Gonna sound weird but how are the axles? When you shift to drive, the force going through the axles and holding against the brakes makes a solid "tripod". If one of your axles has some slop in it, this can cause the weird shake.
Although....I am gonna guess that isn't the whole issue here, as that's ALOT Of shakin. Check all vac hoses......and check each Fuel injector wire to make sure they are all correct. Pull the injector connectors one at a time and verify the idle changes each one. If you pull one and no change, then somethings wrong with that injector, it's wiring, or possibly the spark to that cyl, but since you spliced wires for injector I'd suspect that.
I didn't splice injector wires. I had to splice in the coil pack connector and another vacuum connection directly under the intake manifold next to the IAC.
It's definitely not motor mounts as I checked them thoroughly today.
I'm able to start the car, it idles high yet the engine is running smooth. I'm able to drive smoothly for about a mile but as the car warms up the idles drops to about 400 rpm and the shaking starts and car will stall out.
I have disconnected the battery to reset the computer thinking the ECM needs to re-sync with the car and that has yielded no results.
The axles are fine to the best of my knowledge. Since this is happening after the vehicle warms up I'm leaning twords the coil pack
Edited by Gelbin Mekkatorque, 05 May 2018 - 01:28 PM.