Q: After a radiator change, My car is shaking and emitting black smoke. What could be the cause? 2000 Volvo S80

asked by on

I car hit a stone and the radiator broke. the car was shaking after that happened so I parked it and a radiator change was done. A few days after the radiator change, the car is shaking again when it's idle, and emitting black smoke. What could be the cause?

My car has 312633 miles.
My car has an automatic transmission.

Hello, your symptoms suggest a coolant temperature sensor failure, or wiring problem (cut wires or other "open circuit" issues). Changing the radiator may have caused the sensor to be bumped, or the wiring for this sensor to be damaged. An open circuit for this sensor would send engine management a signal for "very cold conditions", requesting a rich fuel mixture - resulting in rough idle, and black smoke from unburned fuel. I would suggest a engine sensor inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
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. After a radiator change, My car is shaking and emitting black smoke. What could be the cause? 2000 Volvo S80

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: Sound in front of car like rock hiting it

Hello. The low coolant light is typically caused by the level sensor going bad. This is assuming that the car is not losing any coolant. If the car is losing coolant, then the system needs to be pressure tested to...

Q: My JEEP GC is coolant temp is high and I changed the themorstat

Hello, thank you for writing in. While that is a little higher than we would like to see, it is not overwhelmingly hot for the engine. Once it hits 260, you must cut off power to the vehicle. Anything over...

Q: Wiper motor not working.

Hi there. Your windshield wipers can stop working for a number or reasons. It may as simple as a blown fuse or it can be a wiper motor or other circuit issue. Check fuse B13 in the fuse box under...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...