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Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 21116
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Volkswagen vw polo 1.4i 16v: i have a 2004 vw polo 1.4i 16v

Customer Question

i have a 2004 vw polo 1.4i 16v automatic 37000km, the car idles fines ,starts up easily but the car loses power very quickly on steep roads and very hard to pick up speed if it starts up on a steep road after stopping. there is a small sounding knock at start up only after a long switch-off like say in the morning?
Submitted: 1 year ago.
Category: UK Car
Expert:  Matt replied 1 year ago.
Hello
this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.
If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,
Ideally measure the pressure at the injectors and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure
Customer: replied 1 year ago.
ok will try that, but i am getting the revs from the engine. one thing that occasionally happens is that the ESP light comes on but clears after restart.
Expert:  Matt replied 1 year ago.
Ok
one other thing to try is to take a look at the colour of the transmission oil it should be a dark red colour if its black then its needs changing together with its oil filter. Also check its level with the gearbox warm and just after you've moved the selector through all the positions leaving it for a few seconds in each one and then back to park.
You can top up the box through the side fill plug if required and make sure you use the correct oil for your car as the fluids are not all the same. Some manufacturers recommended a change of the type of fluid - Speak to the local dealer and parts dept - they will advise you on the updated fluid to use..
If that’s all OK then check all the electrical connections of the gearbox, remove each connector in turn and spray with contact cleaner. Check that the wiring to the gearbox is in good condition with no chafing or frayed wire
If this is OK then check the selector lever linkage / cable under the car for any broken parts and or missing bolts as if this is coming adrift then it can rub on the car body or just bind up
Then - you should top up if low and re try it - or, if its level is ok - and condition is ok - then the next step is to drain it off - open it up and clean the filters inside -- refill and retry it..
Expert:  Matt replied 1 year ago.
Hello
do you still need help