Engine Variable Valve Timing Solenoid P00011

CHRISSY13

MEMBER
2008 CHEVROLET IMPALA
3.5L
6 CYL
AUTOMATIC
160,000 MILES

This part was replaced today on my car. The car would start to shake or vibrate when accelerated to 60-65 MPH. The engine light is no longer on but the car still vibrates when accelerating.

What else could the problem be?

Tuesday, May 18th, 2021 AT 10:10 AM

5 Replies

KASEKENNY

MECHANIC
18,907 POSTS

If the code is no longer there then this is most likely not related to the engine vibration.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-camshaft-variable-valve-timing-works

Also, we need to confirm the correct oil was used on the last oil change as it could cause this issue and may not set DTC all the time.

Did they check the vehicle out for it vibrating or did they just replace the sensor?

Lastly does the vibration only occur while driving or can you get rough idle or higher RPM while in neutral? Is this vibration from the engine or does it feel like a tire vibration? What happens when you shift to neutral when this is happening? Does the vibration go away?

Let's start with this info and go from there. Thanks

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Wednesday, May 19th, 2021 AT 11:25 AM

CHRISSY13

MEMBER
1 POST

The oil has been recently changed with synthetic blend due to the high mileage of the vehicle. An alignment was also just done since we put 4 new tires on it. Could the fuel injectors need to be replaced, how about spark plugs? The car vibrates only when you press the gas pedal and you near 40 MPH +. The engine acts like its starving when you want to accelerate. We are now at a loss as to what we can do to repair this mess!

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Thursday, May 20th, 2021 AT 9:18 AM

KASEKENNY

MECHANIC
18,907 POSTS

Okay. That is great info but a couple more questions to narrow this down.

When you are feeling this, does it go away as soon as you remove the accelerator? Can you feel it in the seat or in the steering wheel?

If you only feel this vibration at higher speeds and when you are accelerating, that sounds more like a drive train issue like a CV axle.

However, we do need to eliminate all the things you mentioned.

So we need to pull the spark plugs out and inspect them. Then we need to check the fuel pressure when this is happening.

Here are guides that will help with this:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Below is a chart of possible issues with the plugs. Let's take a look at them and the fuel pressure and go from there. Thanks

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Thursday, May 20th, 2021 AT 9:38 AM

CHRISSY13

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Yes, it stops when you remove the accelerator or gas pedal. Yes, you can feel it in the steering wheel.

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Thursday, May 20th, 2021 AT 3:35 PM

KASEKENNY

MECHANIC
18,907 POSTS

Okay. One more set of questions. When did this start? You mention the engine light with the VVT issue and imply that you thought it was related but clearly if the light is off and this is still there then it is most likely not related.

The fact that this is felt in the steering wheel and goes away as soon as you remove the torque tells me it is in the front end or steering system and not the engine itself.

Clearly I could be misunderstanding the issue as I am not driving it but based on everything you are saying, I would put my money on a CV axle issue.

Here is a guide that will help with this:

https://www.2carpros.com/articles/steering-wheel-shakes-when-accelerating-or-braking