Q: Revs go up when idle and vibrates

asked by on February 15, 2017

when turning the car on the revs go up and down just past 1 and will then begin to vibrate, when driving it seems ok but when slowing down and then waiting to pull away it begin to vibrate/shake quite bad almost feeling like its about to stall

My car has 77000 miles.
My car has a manual transmission.

Without knowing the engine size and vehicle having this problem I would have to say that you have an engine vacuum leak in an intake gasket or seal. You should have the computer scanned for any lean codes then have that codes diagnosed to fix the problem.

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

Car backfiring and spitting

The fuel pressure may be low and starving the engine for fuel. The first thing you should check is the fuel pressure and that the fuel filter is not blocking the flow of fuel. If both of these check out...

Clicking in motor. Losing power and cutting off while driving. Any ideas?

Hi there. In many cases, a clicking or ticking sound is caused either by a damaged serpentine belt or can be caused by the valves or cylinder head hardware that is not properly lubricated. The fact you're losing power and...

What does the charging system Warning Light mean in a 2012 Ford Explorer?

The charging system Warning Light is located on the instrument panel. This light illuminates when your vehicle’s battery is not charging properly. It’s important to have this issue resolved quickly, or else your battery may not be able to charge,...

How do I clear MyKeys?

The MyKeys can be cleared very easily by following these steps: 1. Press the Up/down buttons on the steering wheel until Settings is displayed, then press the OK button. 2. Press the Up/Down buttons until MyKey is displayed, then press...

Car engine revs way up immediately upon starting engine.

Common causes of high RPM excursion at start-up are typically: large vacuum leak, throttle plate stuck open, cruise control stepper motor stuck in one position; faulty throttle position sensor, and/or faulty idle air control motor or solenoid. If you request...

How do I use the Car Finder feature?

We’ve all been there before. You park in front of the store and go inside to do your shopping. After you check out, you exit the store, only to find that you’ve forgotten where you parked. Your car has a...

The car starts only with Easy Spray

Hi there. Thanks for writing in about your 2010 Ford Transit Connect. It sounds like there may not be a crank signal occurring at the normal cranking speed. If there is not, then the engine will not start. If adding...

Failed compression test

Hi there. First, a compression test will only check the cylinder for pressure build up during cranking and test the rings. To verify that the valves are really leaking, hook up a leak down tester to the engine and pressurize...

B2278 code for 2008 Ford Escape

Hello - You are correct that the torque sensor, or rather a bad torque sensor signal, is the cause of this problem. There is, however, a Ford Recall (Recall 14V284000) for this problem, so you don't have to do anything...

Related articles

2012 Toyota RAV4 vs. 2012 Ford Escape: Which One Should I Buy?
SUVs (Sports Utility Vehicles) are a fun class of vehicle to drive – with their generally excellent handling on the road, their quick acceleration, and the ability to move a fair number of people while still looking pretty cool, they...
The Top 5 Selling Cars in Florida in 2012
Florida Florida offers great weather year round, and the fact that snow and ice never factor into the equation means drivers don’t have to focus on the overall vehicle handling as they do in other states. The best selling cars...
The Best Used Cars to Buy If You're Over 50
Shopping Shopping for a car when you’re over the age of 50 begins to shift a bit, as your priorities tend to change. Suddenly it’s not so much about what the vehicle looks like, or how much space it has...