Q: Car engine races intermittently and at start.

asked by on February 01, 2017

Most of the time when I start the car (when engine is cold) the engine races in idle and continues to have RPM's up to 3000. After a few miles the racing is intermittently. Also intermittently at stops, when the tachometer needle is supposed to be in the green zone at 0, it has rpm's of 1000. (Gasoline usage is very bad. Used to get 29 miles/gallon, now 22/23 When the engine is racing it feels like the car is controlling me instead of the other way around. Problem of self acceleration was noticed twice over the last nine years, but only 2 short instances. But lately (last 6 months) started getting worse. Last 4 tank fillings noticed excessive gasoline use. Are your mechanics now operational in my area? Walnut, CA? Last time I checked, this was not the case./ Thank you very much in advance for your reply. Sincerely, Gisela Connelly PS The escape is a hybrid.

My car has 37500 miles.
My car has an automatic transmission.

Hi there. This is a normal condition for the ECM (computer) to tell the vehicle to run harder to charge the generator battery. I recommend seeking out a professional, such as one from Your Mechanic, to diagnose the generator battery (the big battery) to see if its holding a charge.

Was this answer helpful?
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

Get a quote

What others are asking

More power

Hello there, thank you for asking about your 2005 Ford Ranger. This is not an engine size or type used in our American version of the truck and I can only recommend having the intake system opened up with a...

Won't engage gears 1994 Ford F250 4WD

Hi - for your "no movement problem" I would first check fuses for the transmission and 4WD controller. Then check the electrical wiring connections both to the transmission and to the 4WD controller. Perhaps the vibration of the railroad crossing...

My truck shakes while idling when the heat, AC and in-cab fan are on

This may be a sign of a faulty MAP sensor. The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses...

Related articles

A Buyer’s Guide to the 2012 Ford F-350
With With Ford’s stiffest chassis to date, the 2012 F-350 is one of the most reliable heavy-duty pickup trucks on the market today. With the quiet cabin and plush ride, though, you’ll feel like you’re driving in the comfort of...
2012 Ford Escape vs. 2012 Honda CR-V: Which One Should I Buy?
SUVs represent one out of every three vehicles sold in 2012, making them one of the most-purchased types of vehicles in the country during that time period. Compact SUVs are a sub-class that are slightly smaller and offer the most...
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...