I need someone to help me trouble shoot why my 7m is not running smoothly as it should. Here's the problem when I sit and idle the rpm jumps up and down from 600 to 800 continueously. Rough idle, the TSRM says vacuum leak. I think we found it or one of them at the idle control valve on the intake tank. The gasket between these two pieces does not seal all the way tight. There is a small gap. It's a new gasket so I'm stummped but when you spray carb spray in it it idles normal and smooth. Do I need two gaskets? The one gasket doesnt look thick enough.
Also when I am cruising in about any gear around 40mph the car jerks pretty roughly. I don't hear it coming from the engine and the rpm is not surgeing. Someone suggested it could be the driveshaft or LSD? I heard that if you can turn the drive shaft with your hands then it's something wrong? Is this true? Give me insight please cause I don't know anything about these things :3d_frown: Also do I need to oil my LSD? The car did sit for 10 years and has 195,000 miles