Extreme rough idle/chugging on cold start

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 ...

Extreme rough idle/chugging on cold start, clears as thermostat opens

On cold mornings it can idle rough and chug so bad it literally rocks the truck, for about 10 minutes, until the temp gauge reads near 200°, then it smooths ...

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 ...

Why does my vehicle start rough when the engine is cold ... - Quora

Check for leaking injectors and a faulty fuel pump check valve. It is supposed to stop fuel from running back to the tank when the car is parked ...

CAR ROUGH start when COLD? EXPERT Q&A on ENGINE ...

Sure, normally the air filter will cause an extremely hard start. Which could also result in the fuel mixture being rich or in older terms ...

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.

Rough idle when cold, perfect when warm? - ThirdGen.Org

When its stone cold, snap the throttle open and see how far the choke plate closes - should have a gap somewhere between 1/8" to 1/4" to the choke horn.

My Car Has a Rough Idle When Cold: 6 Possible Causes - HubPages

The engine coolant temperature (ECT) sensor · The intake air temperature (IAT) sensor · The cold-start injector · The ignition coil(s) · Internal ...

extreme rough idle on cold start - 2012 3.8L - Hyundai Genesis Forum

On a cold start (overnight at -6C in the garage, or after working all day) the engine runs extremely rough, with vibration and much noise.

p050d Code - Cold Start Rough Idle | KBB

If this happens, the idle at a cold start may be rough, potentially due to issues with optimum fuel delivery or problems with the timing advance that don't ...

Extreme rough idle on cold start, goes away after full warm-up (200°)

Now when I cold start it, it chugs and bucks so bad sometimes I turn it off for fear of other damages. It will do this for 5 minutes, as it ...

rough idle on cold start | Subaru Forester Owners Forum

Are you running any kind of engine management? If not then clean the IAC valve and get a new gasket for it. That should help the cold start ...

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.

Rough Idle at Start in Extreme Cold Weather

Do you have a check engine light? Other possible causes could be contaminated fuel and/or a dirty throttle body. Not a member of the "club ...

Rough Idle when starting cold | Volkswagen Passat Forum

You could use live data and freeze frame to help determine what cylinders are misfiring and why. Try a bottle of Techron in a tank of fuel, and/ ...

Rough idle on some cold starts - Toyota 4Runner Forum

It would probably do this every cold start though. The IAC probably wouldn't cause a rough idle, it would just stall or idle at the wrong speed, ...

Rough Idle Causes And How To Fix Them - Auto Select

Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a ...

Rough cold startup | GMC Terrain, Equinox, and SRX Forum

When you start the vehicle, it is flooded and running extremely rich - thus the rough running engine. If you restart the engine while warm ...

Another failed story about troubleshooting a cold start rough idle

If I drive straight away, the rough idle and shakiness disappears as soon as the temp gauge reach vertical and no codes are thrown. ... When cold, ...

Rough idle when cold, but only for about 10 seconds - Rennlist

This would cause a misfire that occurs only on cold start and would in turn clear up as the excess fuel was burned off. If you can see a ...