Question about Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: VW Polo doesnt start
when you turn the ignition switch on, the gas pump relay should turn on and go off to pressurize the system. You can keep the car in neutral/park, get down as low as you can to the driver's floor board and reach up and turn the ignition switch to on [but not to the point that you actually allow the engine to turn over]. Repeat this step until you hear the relay and can actually feel the little black (box) that is actually performing an electromechanical switching.
Check here first----> , it is usually on a diagram within or near your fuse panel.
It is a start. Secondly, I'd check for any play/movement on your negative/positive terminals of your battery and starter motor. Should these be snug, loosen them and clean the terminals on your battery AND starter. This may be "stupid" and "obvious" to most but they don't do it and that is usually the main cause... even if it "appears good".
Posted on Sep 29, 2008
SOURCE: running fine then wont'nt start
You will have to pull a spark plug out to check that you have spark when cranking the engine,while you have the plug/s out do a compression test to determine health of engine and wether it is in fact giving compression,eliminates other potential faults if compression is good.If you have compression(around 140 ish)and introduced fuel and it wont fire up it only leaves electrics as the fault.3 major engine requirements to run Fuel,Compression,ignition.When checking spark at night is best as you can easily see wether you have the correct type of spark,Blue and if its quite you will hear the spark as well.Your fault is consistant with ignition module,coil or lack of power to ignition.Faulty modules will give a spark but its too weak to ignite fuel and the spark will be yellow in color.Let me know how it goes.Good luck
Posted on Nov 17, 2008
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
Posted on Jan 16, 2009
Try to reset the IAC valve on the throttle body it has 4 wires t it .
procedure is as follows
turn ignition key on (don't start the engine), unplug the IAC valve, turn the key off, replug the IAC .Do this 3-4 times .Then start the engine while holding the pedal down at about 2000 rpm then let the rpm down slowly till idle. Sometimes the throttle requires cleaning then redo the reset.
Posted on Jan 19, 2009
Tips for a great answer:
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