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Idling

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Symptoms of a Bad or Failing Air Injection Hose
Check your car's air injection hose for signs of damage. If there are idling issues or the Check Engine Light turns on, you may have to replace it.
The Importance of Warming Your Car Before Driving
Scandphoto / Shutterstock.com Many people feel that it’s important to warm a vehicle up before driving off. This has long been the dominant school of thought, dating from when cars had carburetors and many would not run...
The Importance of Warming Your Car Before Driving
Scandphoto / Shutterstock.com Many people feel that it’s important to warm a vehicle up before driving off. This has long been the dominant school of thought, dating from when cars had carburetors and many would not run...
5 Essential Things to Know About Idling
Everyone Everyone does it, whether waiting for the kids to get out of school or someone running into the store for an item or two. The problem is, idling, which occurs when you sit with your vehicle running but not...
The Importance of Warming Your Car Before Driving
Scandphoto / Shutterstock.com Many people feel that it’s important to warm a vehicle up before driving off. This has long been the dominant school of thought, dating from when cars had carburetors and many would not run...

Related questions

Vehicle stalls both at idle and while moving without triggering any check engine codes.
This is usually caused by a bad connection from a main power source. On your Dakota, this would be a fusible link or fuse coming directly from the battery. The fuses will be in the power distribution center under the...
shuts off after driving
If I was diagnosing your Hummer, I would want to know if there were any diagnostic trouble codes (DTCs) stored in any of the computer modules. I would see if the Check Engine light was on and use my scan...
RPM goes up and down
The very first thing to do when you experience power loss or surging issues (https://www.yourmechanic.com/services/engine-idle-speed-is-high-inspection), or interesting gauge readings, is have your vehicle scanned for diagnostic troubleshooting codes (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau). Your car can set these codes and not always illuminate the...
Rough idling
It sounds like your throttle body is dirty (https://www.yourmechanic.com/services/clean-throttle-body). You may want to check it and make sure it is not sticking. Check for loose connections within the system also. Your car may also be idling rough (https://www.yourmechanic.com/services/car-idle-is-rough-inspection) due to...
On interstate, engine died, idled, no power
Hello there, The TPS can be a serious issue if the car dies like it did. I would not recommend driving the vehicle until repairs have been performed. There is no recall for this fault though there is a technical...
My car wont stay on
This may be related to a dirty or failing idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement). The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...
Misfires while idling
Hello there, thank you for asking about your 1986 BMW 635CSi. It sounds like you've checked all of the low hanging fruit. The previous owner may be right - some vehicles (only German ones come to mind) can develop a...
Low idle and stalling
Hi there. This is a problem that comes up often on this engine. It is typically caused by a failing idle control valve or a dirty throttle body. If the throttle body is dirty then that will typically cause the...
IAC valve
Hello. Your car should be safe enough to drive home. The one risk of this may be that it could potentially leave you stranded momentarily, but most of the time even when this valve is not working properly, it will...
Cold engine problems
There are numerous potential causes for the problem you are having. One thing that comes to mind is a failed engine coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) (ETC). The ECT does exactly what it sounds like - it monitors engine temperature. The...
Stalling when put into drive
Check the inlet air tube between the mass airflow sensor and the throttle body for cracks or loose connections. When you put the vehicle in drive it pulls the hose longer and when it's put in reverse it pushes the...
RPMs going up and down
This is most likely caused by a faulty Idle Air Control valve (IAC valve). This valve regulates the speed of the engine's idle by creating a controlled vacuum leak in the intake manifold. It is also possible that there may...
Rough idling
Hello. This could be caused by a variety of things. It could be that your spark plugs or coil packs are misfiring. This means that the coil pack is not sending the proper electricity to the spark plug. It could...
Rough idle when cold
Hello there, thank you for asking about your 1997 BMW 760Li. Your problem has many potential causes. It could be anything from a failed mass airflow sensor to a worn fuel pump. The first step is to retrieve the diagnostic...
No power when accelerating
Hello! I believe the problem is likely to do with the mass air flow sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-mass-airflow-sensor). When this sensor is at fault it will be sending a regular error inlet reading which will cause computer to incorrectly apply air fuel...
My '98 expedition drives fine for a while, then after a few hours, when sitting still, it idles rough then shuts off.
After some testing done to verify the EGR valve flow to see if the valve is intermittently sticking open causing the stall. This can be done using a scanner with the capability to open and close the EGR valve and...
Misfire on cylinder 8
It could be the spark plug (https://www.yourmechanic.com/article/symptoms-of-bad-or-failing-spark-plugs), ignition coil (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-coil), or coil boot causing the misfire. You may also have dirty fuel injectors (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-injector) that need to be cleaned. Have the ECM scanned to see if the misfire code is...
Knocking from the engine
Although it is unlikely to be the cause, I would recommend checking your engine oil level. If your oil level is low, the engine will not be lubricated sufficiently enough to function properly and will therefore make knocking sounds as...
Difficult startup with a lot of idling when it's cold
One of the main things that can prevent a vehicle from starting in the cold is the battery. Batteries for automobiles are rated by cold cranking amps. This measurement is the amount of amperage the battery can produce at zero...
Car won't pass smog.
Hello! I will be happy to assist you. On your particular vehicle, random misfires are commonly caused by things such as low fuel pressure, a faulty oxygen sensor, bad vacuum lines, or faulty air flow sensors; a broken or loose...

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