need a little troubleshooting advice....

lately my car has been running ragged. acceleration seems sluggish, almost reminscent of turbo lag. initial acceleration is weak, followed by a surge of power, like the car is hesitating.

this partnered with a lot of feedback from the shifter and heavy vibrations at 80+ mph has me thinking something is wrong.

I don't know where to start to troubleshoot.

I do have one or two bolts that have stripped on my lower MREV plenum, so it could be a small air leak, but i'm leaning towards LSD issues due to clicking noises under heavy acceleration.

Any thoughts on where to start???

 

a/f readings? sounds like lean surge.

 

a lot of lsd makes noises, so I don't think that's it. It maybe a leak somewhere..
you have an intake? not sure if your symptom would be that severe from a small leak on NA

 

no intake, just the plenum kit and spacer.

 

replying to myself on this, but what about u-joints?
I know my old mustang shook real bad over 70 mph, I just thought about it.

anyone had issues with u-joints? only 36K on the car.

 

due to the ifs u-joints dont see the wear like a regular car,i dont think with your miles it would be an issue.get the tires balanced and ask them to look for a bent wheel.