Q: Poor starting when cold

asked by on

Engine poor starting when cold,struggles to pick up and sounds like it's chugging,but when warm starts ok. Have put on new leads and plugs but all is the same

My car has 88000 miles.
My car has a manual transmission.

When the car is cold, it relies heavily on the engine coolant temperature sensor. If the coolant level is low, the coolant temperature sensor can send false information to the computer, causing a hard start or cold start poor running condition. If you have access to a scanner, you may try hooking this up to watch the coolant temperature. For example if the coolant temperature is 30 degrees, but the coolant temperature sensor reads that it is 100 degrees, this will cause the computer to not activate the proper enrichment to the engine at the right time upon start up. This is a common issue when it comes to vehicles starting in colder temperatures. For more information, I have linked an article which discuses starting a car in cold weather.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Poor starting when cold

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

Q: Code P0171 system too lean bank 1

A number of things may cause code P0171 to be triggered. As the code indicates, this means there is a lean fuel condition which may be caused by a lack of fuel supply or in some cases, a vacuum leak....

Q: Spewing oil leaving a puddle an shaking violently starts but sounds very bad like it's not getting oil an is rough sounding

Your description of the lack of oil tells me your engine is probably already badly damaged. The main problem is you drove it home with the problems you have described. The only way to save a motor from damage when...

Q: Seat belt chime still chimes with seat belt on how can you disable chime

Hi there. I don't believe this is something that can be disabled. In fact, I believe attempting to do so would be considered tampering with the safety system of car. It is likely that a seat belt sensor is damaged,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.