Skip the auto shop - Our mechanics make house calls

Q: My BMW e46 does not have a full power ?

asked by on

why? I drive a BMW e46 320i 2001 model, I changed a clutch kid, petrol pump, spark plugs oil and oil filter and oil separator but still it increases the speed slowly especially in the morning when it is cold but during a hot day it performs much better. The temperature gauge takes a very long time to reach the optimum/operation temperature. What could be the cause of this problem guys?
My car has a manual transmission.

Your issue seems to be temperature related. Taking too long to reach proper operating temperature can be cause by two things. First thing I would check is if either the electric cooling fan is running all the time no matter the temperature. Related would be checking the engine-driven fan clutch. If the fan clutch is seized, then it may be pulling too much air through the radiator when it is not needed. Secondly, I would check to see if the engine thermostat is stuck in the open position. The thermostat should remain closed until the coolant reaches proper operating temperature. If you would like to consult an expert to see this in person, a certified technician from YourMechanic can come to your home or office to inspect your vehicle’s loss of power and let you know what needs repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

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: Air conditioner doesn't work

The compressor may have failed and leaked out refrigerant from the front seal. The system would need to be diagnosed by a certified AC mechanic, such as one from YourMechanic, to check the compressor and the rest of the AC...

Q: Engine has no power

It sounds like the high pressure injection pump has gone out. When this happens, tiny metal particles contaminate the fuel rail and clog the injectors. The fuel pump will have to be replaced and the lines and injectors will need to...

Q: Loss of power, takes longer to start.

Hi there: Anytime coolant freezes inside an engine, it's typically due to the fact that it's percentage of water was too high. When this occurs, it can cause seals, gaskets and even metallic components to crack or break inside the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.