M30 is Feeling A Little Sluggish Until 3k RPM.

[AsharC]

Hey everybody,

Lately my car has been acting up. The feels sluggish, somethings holding it back. I don't feel the same power I used to until I reach 3k rpm in any gear. It somewhat goes back to the regular feel but just not the whole thing.

Also, as I was driving the other day, the motor cut out and came right back on around 3k.

I want to know what could be at fault.

I replaced most vacuum lines, did an oil change with 20w-50, and I replaced the oil filter. Plugs were done less then 3,000 miles ago.

Any help is appreciated.

Thanks
Ashar

[Zacm829]

Crank position sensor tight?

[AsharC]

Yea, its been replaced too

[jim325]

throttle position sensor check out good?

[wildstoats]

When was your last valve adjustment? The sudden cutting out screams electrical to me. Double check your grounds, etc.

[AsharC]

Where are the grounds located? How do I check my TPS? I replaced my Coolant Temp Sensor, it made a little difference, but the car still isn't at its full potential.

[AsharC]

Bump.

[AsharC]

Bump. I replaced the fuel filter and the in-tank fuel pump. The car doesn't cut out anymore. I still have the sluggish accel though.

[WatchMyDrift]

i would replace the coil. what kind of plugs did you put in.

[AsharC]

I put in Bosch plugs. I'll check on the coil tomorrow

[yert315]

make sure the CPS isn't rubbing on the pulley.

Check your coolant temp sensor (blue one).

inspect for air leaks.

[Bearmw]

Is it feeling sluggish when accelerating at partial throttle up to 3000 RPM or when giving full throttle up to 3000 RPM? Also is it making full smooth power at 5-6000 RPM?

Also have you tested fuel pressure at idle and while driving? I would connect a guage and tape it to the windshield and measure while under load.

Are you running a cat and if so what is its condition?

[dashboardmonkey]

Check your afm

[Bearmw]

good point on the AFM

[AsharC]

Sorry I haven't gotten back to you guys. I have been have problems with my clutch hydraulics, so I can't really drive the car.

I'll look into what has been posted once the car is drivable.

Thanks guys!!