I've just bought a year VW polo which should have been serviced before it left the dealership. I've only had the car for a week and have noticed that the engine roars whenever I accelerate. I thought it was because I'm a new driver and was too heavy on the gas. Could there be a mechancial defect with the car?
Now is the car 2017 plated or 2011 plated
as there is a vast difference between new and second hand new to you
Next question is it automatic transmission or CV transmission
With automatic as you increase rpm the car will accelerate and you will feel ratio changes up to the point where road speed = engine rpm for that throttle setting
With a CV transmission ( constant velocity transmission ) there is a torque converter but that is where the automatic action ends
In the transmission there are 2 pulleys with a big belt that can vary the ratios by pulling the flanges together on one and expanding on the other
This gives an infinite number of ratios and is designed to keep the best ratio selection for the torque band of the engine
SO how does it affect your driving
If you floor the pedal on take off, the engine will red line and stay there until road speed builds up
OR you ease back on the pedal and the pulleys start to change the ratios to suit the power band
How to drive it
when you want to take of push the pedal down to around 2500 rpm the car will take of normally
as the road speed increases , ease off the pedal and it will keep altering ratios until the correct road speed is reached for the rpm on the dial
The only catch that you will have to get used to is when going to pass at speed , you tend to floor the pedal to get past quickly but it will not down change ratios until you ease of the pedal and then the car will speed up to the rpm that you are holding it at
IT is different in driving and you will have to learn to drive to rpm not road speed and then it will behave normally ( set the rpm by the pedal and the transmission will catch up and to make it catch up , ease of the pedal in stages , just like a conventional automatic
SOURCE: vw polo Broken timming Belt
Did you check the compression? If the compression is low then the most probable cause is the valves bent. Means the head has to come off.
If the compression is ok then have you got the HT leads on the right way or is the ignition timing ok. Check the resistance in the leads they have a tendancy to break down.
SOURCE: vw polo car wont start
try disconecting the coolant temp sensor and then try, it may be faulty, also check the hall sender unit in the distributor, if it has one, the centre pin should be the signal wire if no pulse is present the sensor is faulty
SOURCE: removing plastic engine cover from 2005 VW Polo
the cover just pulls off and disconnect breather hose as u lift it.there is about 15 screws to remove then the cover opens
SOURCE: MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER
I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.
SOURCE: crankshaft sensor for vw polo where is the
Crankshaft sensor is located on the right side of the cylinder block behind or under the starter. It is fitted into the rear crankshaft oil seal hausing
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