Rough idle on some cold starts
Rough Idle on cold start : r/jetta - Reddit
During cold start, the vehicle runs rough because it's unable to compensate for the change in air flow. When the vehicle begins to warm up, it's ...
Rough idle at engine start for 1 or 2 minutes, then runs fine all day ...
Based on my limited experience, common reasons for rough idle when cold include: Vacuum leak at intake manifold that closes when metal warms up.
Why does my car idle rough on a cold start? - Quora
Rough IdleIf the car starts when cold but, idles rough or does not want to stay running, this can indicate a problem with the engine temperature ...
3 Things to Check if You Have a Cold Start Rough Idle - YouTube
Welcome! Here are the parts I used in this video: Delphi MAF Sensor: https://amzn.to/3X366kB Map Sensor: https://amzn.to/3ZpZvSO Intake ...
Rough idle when cold | BobIsTheOilGuy
The fact that it seems okay in closed loop (when the fuel/air mix is controlled by sensor feedback) does make me suspect either a vacuum leak or ...
p050d Code - Cold Start Rough Idle | KBB
The P050D code stands for “Cold Start Rough Idle,” which indicates that you're experiencing an engine rough idle when starting from a cold state.
Rough idle on cold start! | E46 Fanatics Forum
Rough running at cold start is usually a vacuum leak. It only happens while the engine is in open loop control.
Q&A: Troubleshooting Rough Idle on Cold Start | JustAnswer
Check the hose clips for tightness and inspect the trunking for any cracks or splits and also all the vacuum system, the small bore pipes and ...
Rough idle smoothes out when warmed up - IH8MUD Forum
Engines need to run rich when cold, so the ECU dumps more fuel into the engine than is actually needed until it warms up, think of it as full ...
My Car Has a Rough Idle When Cold: 6 Possible Causes - HubPages
Engine Coolant Temperature (ECT) Sensor ... One of the most common causes of rough idle on a cold engine is a faulty ECT sensor. This sensor ...
Rough idle when the engine is cold only | EricTheCarGuy
After the installation, i still get the rough idling on cold starts, but the mechanic suggested a workaround – pumping the gas pedal 4 to 5 ...
Engine idles very rough after cold start in colder weather - GenVibe
A leaky fuel injector can cause rough startup idle too. Pulling the connections under the hood on the ECM should be something you can do at home ...
Rough idle during cold start transitioning then goes into limp mode
The explanation in my case why it was mainly present on cold start is because the engine is running rough and more vibrations present causing the bad connection ...
Another cold start rough idle thread - 5Series.net - Forums
If its a vacuum leak it will idle rough on cold start then normal once the car is at regular temp. Also, listen for a whistling sound if its a ...
Rough idle when cold start. - Fifth Generation Legacy (2010 - 2014 )
Could be that, or possibly a vacuum leak that goes away as things warm up and expand. I know for a while, there was an issue with intake ...
Rough idle cold start - Lincoln Forums
Rough idle can be due to air/fuel mixture incorrect. Or burning bad fuel. Or an ignition system issue. When cold it is generally a lean mixture if the mixture ...
Rough idle on cold starting, with CEL | Honda Element Owners Club
It wasn't the throttle body! Rough-idle-on-cold-start kept recurring. Here's what it was: the engine was slightly low on oil and after I added ...
Rough idle on cold start. - F150 Ecoboost Forum
Also check oil for fuel contamination of crankcase - possibly from leaking injector or high pressure fuel pump. There have been some issues with ...
Rough idle on cold start with shaking / surging
I've had rough idling for a couple years, but after hearing engine knocks and a flashing CEL light last week (see previous thread), ...
Rough idle at cold start... - BMW 3-Series (E90 E92) Forum
The rough idle is most likely your car misfiring due to bad fuel injectors. It's quit common for this to happen regardless if the car has a tune or not.