Q: While in park and stepping on the gas at 4000 rpm exactly the vehicles starts shaking.

asked by on November 25, 2016

I purchased the vehicle about two months ago. It previously had a engine oil leak which was fixed by the dealer. Previous to my purchasing the Escape it developed a differential problem, but that is not the issue i am concerned about. The vehicle has been sitting for about 10 months. The vehicle starts without issues and idles smoothly. when i got it there was very little oil in the engine, very little coolant and a battery that couldn't hold it's charge. i replaced the battery. and started checking oiks and fluids and gas. a friend and i decided to see how the vehicle ran. We did not drive it because of the differential issue but kept it in park and and slowly revved the engine. It was going smoothly until it reached 4000 rpms then it started shaking/vibrating. once it goes back to under 4000 rpms it stops shaking. once we stop stepping on the gas it idles smoothly. The check engine light does not come on.

My car has 82640 miles.
My car has an automatic transmission.

The engine computer has a built in rev limiter built in to the programming that will not let the engine go above 3800 to 4000 rpms when the transmission is not in gear and driving down the street. This is a normal protection so you do not over rev the engine and damage it.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Hi scott my husband pulled my window fuse out and broke a prong what do i do so i can get that fuse back in there its a 2001 chrys

The first thing to do is to have a mechanic like one from YourMechanic to see if the damaged socket can be repaired or the entire fuse box needs to be replaced. In some cases it may be able to...

Car jerks after I accelerate past 48mph

Hello, thanks for writing in. I'd be happy to offer my insight. This can be caused by a lack of power from the engine or a transmission issue. I usually check the computer for any codes first to see if...

What could be wrong with car

It sounds like the engine has overheated severely. The leaking fluid was most likely coolant from a broken hose or water pump for the cooling system. The cooling system and engine will need to be tested now that the engine...

Fuel pump breaker trips.

Hi there. Check the electrical wiring from the fuel pump breaker to the fuel pump and see if there is any loose wires. When the vehicle shifts from 2nd to 1st there could be a fast draw down in speed...

Emergency brake in 2006 Jeep Grand Cherokee stuck

Hello. If your Jeep feels like it is slowing down on its own, then the brakes may be binding. It may have to do with the parking brake or it can be something else. I would typically get the vehicle...

Sputtering. 1998 Ford Ranger

Hi there. This vehicle had a few different problems that could cause the symptoms you have. A common reason is the vehicle losing the fuel pressure from the fuel pump going bad. Additionally, the ignition module, distributor, starter in the...

changed out a dead battery on a 2013 Ford fiesta, got the wrench light warning now it won't change out of second gear

Hi Gary. Thanks for contacting us today. Usually, a damaged transmission position sensor will cause the symptoms you're describing, but it's very odd for a battery replacement to activate this problem. It's possible that this issue is non-related. The wrench...

Car won't start. Clicky sound happens. Windshield wipers go on own. Horn won't honk upon locking car

Hi Mary. Thanks for contacting us today. What you are describing is commonly caused by a damaged electrical relay or an electrical short circuit within the steering column. In some instances, it can be a combination of electrical problems, such...

Car misfiring and is barely driving.

The modifications you have done are hard to say if they are causing the problem or not, since they are different than the original equipment specifications. The problem sounds like you are running out of fuel or you do not...

Related articles

How to Monitor Your RPM Gauge to Get the Best Performance Out of Your Car
A car tachometer, or RPM gauge, shows the speed the engine is spinning. Watch your RPM gauge to improve your car's performance and fuel efficiency.
A Buyer’s Guide to the 2012 Ford Fusion Hybrid
The The 2012 Ford Fusion Hybrid is a really great choice for anyone looking for a mid-size sedan. Not only does it boast plenty of room for people and cargo, but it also has a good amount of power and...
A Buyer’s Guide to the 2012 Ford F-250
When When it comes to large, heavy-duty pickup trucks, the 2012 Ford F-250 only has two competitors – the Chevrolet Silverado HD and the Dodge Ram 2500/3500. Though the F-250 doesn’t outperform the Ram in the towing department, it certainly...