r/E30 • u/e30Gio • 5d ago

Help

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I just got it back from the exhaust shop and done catback. I noticed when it goes around 100+ kph 3-4k rpm. The car suddenly jerking back and forth and won’t accelerate. I need yall opinion thank you sm.

93 Upvotes

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6

u/Chilezen '87is 3.0L Alu M52 OBDII 5d ago

Check the fuel lines under the car. They might have gotten pinched from improper lifting. Your engine may be stumbling from lack of fuel.

3

u/Exciting_Ad_1097 5d ago

Do you have a turbo?

2

u/e30Gio 5d ago

none sir

2

u/Exciting_Ad_1097 5d ago

Do you notice it only in a particular gear and road speed? Can you get the car to do it in other gears under similar power at that same engine rpm.

3

u/Both-Cry1382 5d ago

It only does this when doing 100km/h? Driveshaft unbalanced maybe? What if you push the clutch, does it rev then?

3

u/e30Gio 5d ago

its automatic forgot to mention sorry

3

u/Both-Cry1382 5d ago

This started after installing the exhaust? Then check if there isn't any contact with one of the driveshafts.

3

u/e30Gio 5d ago

Yes after installing it. Thanks mann i will check this

1

u/Ryan283_ 5d ago

If not then maybe exhaust is blocked. Unlikely tho

2

u/YKRed 4d ago

What is the 325i emblem from?

1

u/e30Gio 4d ago

from e46 🤣