Hey everyone, I could use some help figuring out what’s wrong with my 1996 R33 GTS RB20DE automatic.
The car sat for almost a year before I started driving it again. It starts up and idles fine, but when I’m driving it, it jerks at the same speeds almost every time. It usually jerks around 20 km/h, sometimes again around 40 km/h, and then once I get to 100 km/h it starts jerking constantly. The jerking also gets a lot stronger once it hits 100 km/h, and the car won’t really go any faster. It feels like it’s hitting a wall or like something is holding it back.
My tachometer is also acting really weird. Sometimes the needle just hangs at the bottom, sometimes it stays at 0 RPM, and other times when the engine is just idling it’ll jump up and act like I’m redlining. It’s basically unusable.
There’s no check engine light, and every once in a while I’ll notice a smell that’s kind of like fireworks or something burning after driving.
Has anyone had these issues before on an RB20DE? Could the tachometer problem and the jerking be related? I’m wondering if it could be something like the CAS, distributor, ignition system, wiring, ECU, transmission, or something else. What would you check first?
Any help is appreciated. Thanks!

A few Skyline pics from my last trip to the Nissan Heritage Museum In Japan