Q: Idle problems

asked by on January 21, 2018

Car idles up and down, and when in park if I give it gas and let off the engine revs up high by itself. Allready changed tps, iac, and map sensor. What should I do?

It’s possible that you could be having a sticking throttle linkage or a problem with the throttle body itself. I would recommend checking those areas for any potential problems that may exist.

A high idle can be caused by intake vacuum leaks or vacuum line leaks. You should try spraying carb cleaner near all intake connections and vacuum connections to locate leak. If you need additional assistance then have a mechanic like one from YourMechanic come and check the systems for you.

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

Ignition

Hi there. Unfortunately, we're not able to post images in the Q & A; which is why purchasing a service and repair manual for your Honda Odyssey would be very helpful in explaining how the ignition system works and is...

Do I need to replace timing belt again of replacing water pump?

The water pump and timing belt should be replaced as a set if the coolant leaked on the belt. The coolant leaking on it will damage the belt.

How do I program the HomeLink garage door opener for non-rolling code garage doors?

Garage doors that were made before 1996 are referred to as non-rolling code. Here is how you program them with your HomeLink garage door system. Insert your key into the ignition, and turn the ignition switch to ON/RUN. Locate...

Not starting

The most common cause of an no start with no spark is going to be the crankshaft sensor causing the no start. The vehicle should be scanned to see if there is an input from the crankshaft sensor to the...

Wheels not turning

Sounds like you have got some serious drive line issues, is your transmission automatic or standard? Some of the problems you could be having could be burned clutch, seized pilot bearing, the final drive being locked up, or a problem...

Why heater cools off at low idle but resumes to hot setting upon acceleration?

Sometimes when a heater core starts to get clogged from dirt and debris inside coolant cores it take higher flow to get good heat out of it. Try to have heater and cooling system flushed and the thermostat replaced to...

Poor acceleration, feels tight when I push on the accelerator.

Hi there, thanks for writing in. I'd be happy to help. A dirty or clogged air filter can absolutely cause the car to hesitate or demonstrate a lack of power at acceleration. As you may know, this is the equivalent...

Car won't pass smog check

Hi there. Your smog check is measured as to how efficiently your vehicle is burning fuel and air. Smog is reliant on many different components. Your EGR valve, vacuum, and also your catalytic converter are factored in. I would strongly...

I turn my high beam headlights on and both headlights go out.

Hello, thanks for writing in about your Nissan Frontier. The only way to tell if it is the light bulbs or the switch is to check for power to the bulbs when you switch to high beam. Most of the...

Related articles

Politics and Personal Driving Preferences: Do Republicans and Democrats Drive Different Cars?
Dodge Rams are the most popular car in Republican states; the Toyota Prius is the most popular in Democratic areas (as are hybrids and foreign cars).
The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...
2012 Chevrolet Silverado vs. 2012 Dodge Ram: Which One Should I Buy?
When you are looking for a way to get a load of mulch or gravel, or need to haul a large trailer or boat behind your vehicle, chances are you are looking for a truck. Trucks are not meant to...