Q: Why does my engine surge when the cruise control is on in my 2017 Kia Sportage
When I have the Cruise Control on between 60-66 mph - the engine surges between 2300 and 3700 RPM ... While driving on flat level highway. At slower peed - Cruise set at 55mph - Engine surges between 1800 and 2500 RPM. This uses up a lot of fuel ... WHY is it doing this?
My car has 2000 miles.
My car has an automatic transmission.
Hello. This commonly occurs due to the fact that this engine is underpowered. The smaller engine in your vehicle has a problem maintaining speed which causes this fluctuation. I have seen a lot of complaints on this vehicle for this. In some cases having the dealer reprogram the computers can help this, but for the most part this is how the cruise works on your vehicle.
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
P300 reading, loss of power, and misfiring cylinder
Code P0300 indicates there is a random misfire which can be happening in one or more of the cylinders in your Nissan. If you have a specific cylinder misfiring there is usually another code along with the random misfire code,...
Mounts for safe jacking the car up
Yes, that is what they are for. A lot of German cars have them. They are made so that you can jack them up (https://www.yourmechanic.com/article/all-about-car-jacks-and-stands) at these safe points and not worry about anything bending or slipping. That's where you'll...
Car won't start after i changed both knock sensors and harnesses.
You can try to see if there are other codes stored in the computer. Usually, the connectors are different so you can't mix them up but that may be a possibility. If there are no new codes, make sure there...
Head unit turns on but there's no sound coming from the speakers.
You said you have an aftermarket deck installed now. For the deck to power up, it needs power, ignition and ground. It may also have a wire for illumination. Since the deck is coming on, all of these connections are...
My gas mileage dropped after an oil change.
If you were using one type of oil and then replaced with a different oil that does not meed specifications of the motor by being too thick then it would affect fuel mileage by maybe 1 mpg. If you are...
Pedal and acceleration speed
Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement) monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
After i full with gas I got code P0420
Hello, thank you for writing in. When there are issue with the vehicle's gas recirculation system, the engine may pull in excess exhaust fumes. This will cause the engine to run rich and make the catalytic converter unable to compensate...
My 2003 ford explorer is jerking while driving
Hi There, A jerking reaction is generally caused by a couple of potential things such as a vacuum leak, a failing fuel pump or most commonly a dirty or failing mass air flow sensor. The mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement)...
Related articles
A Buyer’s Guide to the 2012 Kia Rio
The The Kia Rio has a new style and look for to attract buyers and compete in the subcompact car ranks. It offers outstanding fuel economy with great value that has a nice price tag for a variety of budgets....
A Buyer’s Guide to the 2012 Kia Optima Hybrid
Kia Kia has really turned over a new leaf with their cars in the past few years, and the 2012 Kia Optima Hybrid is certainly no exception. With the same attractive design as the Optima, higher fuel efficiency, and a...
A Buyer’s Guide to the 2012 Kia Forte
While While Toyota and Honda have reigned supreme in the compact sedan and five-door hatchback classes for years, Kia has been rolling out more and more high-quality models with really attractive features than ever before. While Korean cars are traditionally...
Browse other content
Estimates
Cities