Focus on this 1

Hi , ive been posting for the last 6 months about the same engine shaking problem I changed many parts so far but the problem still persists...

I changed:
- engine mounts
- Maf
- Sparkplugs
- fixed 2 vaccum leaks
- Cleaned injection system
- fuel filter
- air filter
- cleaned throttle
- cleaned engine with special product

Now what to do? Im thinking about the ERG valve , is it possible to clean it? how many erg valves are there on a 320? 1 or 2. If you have any other suggestions you are more than welcome.

KENNETH04S

Did you check if the engine is misfiring??? It may cause engine shakes too.

Focus on this 1

no codes have poped out

subseajones

Is the shaking constant or at a certain rpm? Or a certain speed?
Is it coming through your hands or feet or ***?

I would go to a shop that has one of those lifts that can suspend the car with the wheels off the floor go for a "stationary ride", with a friend underneath the car and follow the whole drivetrain poking at everything with a screwdriver to see if you can feel or see anything vibrating.
Once on another car, I lost one of the four small bolts connecting the propshaft to the gearbox. Just vibrated loose I suppose.
The shaking drove me mad for weeks until I spotted it was missing.

Sometimes the codes don't pop up, even if there is a fault. Computers are not infallible. Might be worth getting the car on one of those Krypton type tuning machines to look for coil breaks or trouble with leads etc.

Good luck! Let us know what it was when you find it

Focus on this 1

its shaking very unconstantly , it comes from the engine itself cuz when I look at it running it moves side to side very unconstantly.

Discgolfer74

Are you using cheap gas? Premium ONLY! Check your Knock Sensor. (No, I don't know where its at.)

Focus on this 1

never been cheap on gas always putting premium fuel. A faulty knock sensor would trigger the check engine light no?

Focus on this 1

Update : Cleaned the Egr valve today tested it its ok , I extracted the metal tube next to it , found it was full of carbon , cleaned it put it back in placed started the engine ... and it still shakes , now im really pissed off

subseajones

Close up with the hood up, Does it sound running good, even though it's shaking. I mean is it purring as well or sounding lumpy? Exhaust... Smell more gas than usual?
I'm thinking misfire or mechanical imbalance.

Focus on this 1

somedays the engine has no power at all , some other days when it shakes less I can feel there is more power ... it dosent smell gas at all... In case of a misfire or mechanical imbalance should I get a check engine light??? I got the car checked by many mechanics but nothing no one was able to find the problem...

Amir_AMG

wow after all that you would think you would be fine...whts the mileage? an o2 sensor MAY cause a slight idle but nothing serious....good luck figuring out your problem...

J56BP

switch gas (brand), go 2 other station !

Focus on this 1

I never go to the same station lol!!!

Wobert

Have you considered the crankshaft position sensor?
Or perhaps the fuel injection temperature sensor? (don't know if that is the correct name, but I am assuming we have this in our cars too)

Wobert

Focus on this 1

all that woudl trigger a Check engine light , no?

MarcusF

The crankshaft position sensor won't trigger a light. The car will just stop running.

The intake air thermosensor might cause the check engine light to illuminate. I've had one go out on another Bosch injected car, and it tripped a code. It did not effect the idle.

charliev68

sparkplug wires?

FF_EMT

+1 on spark plug wires i had a slight shake in the engine changed the wires and it stoped.

charliev68

i had the exact
problem.
it was the wire. i would rr all 12 if i were you.

The Jury

Catalytic converter ...... pick one, there's quite a few on the car. If the system has back pressure from a clogged cat it can be pushing back into the sensors and causing the misfire.