Skip the auto shop - Our mechanics make house calls

Q: Car drives poorly with heavy fuel consumption and poor transmission

asked by on

Car bought from overseas. Check engine light on since purchase. Difficult transmission of gears despite pedalling. Suffling and drags to move. This was at 166000km. It started to overheat and later was told the head gasket was blown. This was repaired. But engine was never optimal. I was told i had to change my transmission box; spent a whooping $980k to purchase a new transmission and after installing ...nothing changed!!!! i changed my mechanic to one who said he would do a diagnosis and came up with Po..112.; po..527.; po227..; p0..1100 codes. Don't know what he did but drive improved a bit....After 2weeks.it has gone back to the same way it was. Shuffling, goes over 4RPM before gear changes heavy fuel consumption No smooth drive Creamy brown dirt in my radiator cap Please help. Appreciated

My car has 166000 miles.
My car has an automatic transmission.

Hi and thanks for contacting YourMechanic. First, with the dirty cooling system, you would need to perform a coolant flush and replace the thermostat and radiator cap. This will help with the overheating issue if you are still experiencing that. For the codes that are found, the code P0527 relates to the fan circuit to the cooling system. Check the cooling fan to see if it is working. Turn on the air conditioning and see if the fan comes on. If the fan comes on, then the coolant temperature sensor needs replaced. If the fan does not come on, check for any blown fuses. If all of the fuses are good, then the fan motor needs replaced. For the code P0227, throttle position sensor and P0112, air intake temperature sensor could have failed. Check the harness to them for any debris, sand, grit, or corrosion. These sensors could fail for high moisture and extreme dry climates. The main concern is the code P1100, for the mass air flow (MAF) sensor. If the MAF is dirty from sand, dirt, grit, or debris of oil, then the sensor needs cleaned or replaced. I recommend unplugging the MAF sensor and see if there is any changes to the engine performance. If there is no change, then I suggest replacing it. Fixing all of these issues will make the vehicle run smooth and shift good. If you need further assistance with your vehicle, then seek out a professional, such as one from YourMechanic, to help you with the shuffling symptoms.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: How can I change the Engine Start Stop switch modes?

You can change the modes on your car by pressing the Engine Start Stop button. Press the button when the brake pedal is released. The first press puts the mode in Off, where the vehicle is off. The second press...

Q: Unable to shift into gear

Hello. If the shifter will not move than that is typically a failure in the shift interlock which keeps the shifter locked in park until the brakes are applied. See if the brake lights are working. If they are not...

Q: Car smoking and shaking

Depending on what kind of smoke will determine what the shaking could be. There are 3 basic types of smoke. Black smoke is raw fuel. Raw or unburnt fuel can foul spark plugs causing a misfire. A misfire will seem...

Related articles

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...
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...
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.