Casual issues :)

[ConnorJames05]

Hey guys, been here before, y’all helped heaps.

I’ve got a 99’ berlina 3.8 auto, just (yes prepare yourself) had its third engine put in. Last 2 had fucked up valves on both heads. anyway, with the last 2 engines (current and previous) I’ve had issues where under throttle (usually when taking off or holding at 1750-2100rpm) it shudders really bad, the engine isn’t running poorly anymore so I’m ruling that out.

Is there any kind of mounts (engine aside, as they’re new) that could be causing this, like transmission or any others?

Thanks guys!

 

[Lex]

Hey guys, been here before, y’all helped heaps.

I’ve got a 99’ berlina 3.8 auto, just (yes prepare yourself) had its third engine put in. Last 2 had fucked up valves on both heads. anyway, with the last 2 engines (current and previous) I’ve had issues where under throttle (usually when taking off or holding at 1750-2100rpm) it shudders really bad, the engine isn’t running poorly anymore so I’m ruling that out.

Is there any kind of mounts (engine aside, as they’re new) that could be causing this, like transmission or any others?

Thanks guys!

Spark pug leads, spark plugs maybe the dfi & or coils?

I'm leaning towards leads? 1 step at a time.

 

[ephect]

Centre bearing is shot

You can check for any tears or shake it to check for excess movement. It should be solid with little movement.

Second check trans mount, but money is on centre bearing