Car Vibrating After Hard Driving

[Wh0cArEs]

Hello folks,

Need some inputs on this issue of mine.

I'm driving an E90 335i and after some spirited driving of abt 10 min or so, I came to stop at a red light. The car had this unusual mild vibrations. Idling rpm was normal, no CELs came on as well.

The mild vibration continued after moving off and went off on its own after a few min of normal driving.

My initial guess would be either the fuel pump, gearbox or a lesser extent, spark plugs.. I've just changed my ATF and transmission sump and filter assy recently.

Anyone experienced this before?

Thanks!

 

[Red_Bean_Bun]

Re: Car Vibrating After Hard Driving

Hello folks,

Need some inputs on this issue of mine.

I'm driving an E90 335i and after some spirited driving of abt 10 min or so, I came to stop at a red light. The car had this unusual mild vibrations. Idling rpm was normal, no CELs came on as well.

The mild vibration continued after moving off and went off on its own after a few min of normal driving.

My initial guess would be either the fuel pump, gearbox or a lesser extent, spark plugs.. I've just changed my ATF and transmission sump and filter assy recently.

Anyone experienced this before?

Thanks!

If the Cel light was on, get someone to read the logs and find out exactly what was happening.

 

[Wh0cArEs]

Re: Car Vibrating After Hard Driving

If the Cel light was on, get someone to read the logs and find out exactly what was happening.

Hi,

As per my post, no CEL came on.

 

[Red_Bean_Bun]

Re: Car Vibrating After Hard Driving

Hi,

As per my post, no CEL came on.

Missed that ............. I had that for about 3-4 months after a bunch of works were done to the underside of my car. Lots of mechnical parts not properly done. After some spirited driving over humps etc I get that few minutes of vibrations.

Sometimes, I'll just get out of the car and kick the mufflers / bumper around and it'll be fine for a while. Finally, got a mechanic to have a look and they went around with a hammer and bent stuff here and there and the vibrations did not surface for the last 6 months .......

Things you can do to old cars ..............

 

[Wh0cArEs]

Re: Car Vibrating After Hard Driving

Missed that ............. I had that for about 3-4 months after a bunch of works were done to the underside of my car. Lots of mechnical parts not properly done. After some spirited driving over humps etc I get that few minutes of vibrations.

Sometimes, I'll just get out of the car and kick the mufflers / bumper around and it'll be fine for a while. Finally, got a mechanic to have a look and they went around with a hammer and bent stuff here and there and the vibrations did not surface for the last 6 months .......

Things you can do to old cars ..............

Hopefully, it's as simple as a few clinks here and there. But i didnt drive over any humps or unusually uneven roads.

Tks anyway

 

[Wh0cArEs]

Re: Car Vibrating After Hard Driving

anyone can help?

 

[Dezzy]

Re: Car Vibrating After Hard Driving

anyone can help?

Did you try again today? I doubt it is serious.... what is the mileage?

 

[Wh0cArEs]

Re: Car Vibrating After Hard Driving

Did you try again today? I doubt it is serious.... what is the mileage?

the problem hasn't returned since that fateful night *touch wood*

Mileage is rather high though, >100,000km

 

[Dezzy]

Re: Car Vibrating After Hard Driving

the problem hasn't returned since that fateful night *touch wood*

Mileage is rather high though, >100,000km

Wah so high... than most likely transmission mounts or engine mounts.... time to change them.

 

[R2D]

Re: Car Vibrating After Hard Driving

mounts dun weaken after 10mins of hard driving, sounds like your plugs are going out the door.

 

[Wh0cArEs]

Re: Car Vibrating After Hard Driving

mounts dun weaken after 10mins of hard driving, sounds like your plugs are going out the door.

Dat's 1 of my guesses... think it's time to change those plugs.

Tks!

 

[Dezzy]

Re: Car Vibrating After Hard Driving

1. Inspect your engine while it's running. Listen for any sucking or hissing sounds, which might indicate that an air hose or vacuum hose is loose or disconnected. If you find loose or disconnected hoses, reattach them and see if that solves your problem.​

2 Listen to see if your engine is missing. An engine that is missing can cause a vibration because one or more of the cylinders are not firing. If you believe that you detect a miss from the engine, pull out a few spark plugs and look at their condition. If they are very dirty and worn, change them and see if this stops your engine from missing.

3 Inspect your ignition wires. See if they are cracked from the heat of the engine. Make sure that they are tightly connected to the spark plugs and to the distributor. A good way to see if they are defective is to put the car in gear, and while your foot is mashing the brake, rev the car and see if it starts missing. This is a good way to put a "load" on the engine to see if the wires hold up.

4 Check from underneath the engine and look at your engine mounts. These are the thick rubber blocks that are between the chassis and the engine. Sometimes they are filled with hydraulic liquid. If so, make sure it isn't leaking. Check your mounts by inserting a crowbar between the engine and the chassis. Put pressure on it, moving the engine away from the chassis. If you see that the motor mounts are cracked or damaged, you may want to take your vehicle to an automotive technician to have your motor mounts replaced.

5 Check your harmonic balancer. Harmonic vibrations can lead to a variety of mechanical failures. Harmonic vibrations are specific and usually have a repeated type of vibration which ebbs and rises. One indication of your harmonic balancer being worn is if you detect a leak from your front main seal. If the above steps don't fix your problem, take your car to a professional and have them check the harmonic balancer.



Enjoy the hunt.