Question about 2004 Volkswagen Passat
Check the evaporator fins for gunk build up preventing proper heat exchanging and air flow
the dye can only be see with ultra violet light and yellow lens glasses so unless you take it back to them you will not see the leak
condenser fans start as soon as the ac compressor is switched on
I am thinking that the "technicians " are not completely familiar with ac operations and have "touched you " in the wallet
I have to ask , have they used the correct gas in the system
did they vacuum down the system completely before adding new gas
I would only be taking it to accredited professional ac specialist shops who can guarantee results
Posted on Apr 24, 2017
Take it back and make them fix it, if they refuse sue them in small claims and/or contact your state's consumer protection office (or bureau of automotive repair if you have one) and file a formal complaint, that will get them moving.
Posted on Apr 24, 2017
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Posted on Jan 02, 2017
Check for a switch at lower part of rad. Should see a wire harness & plug on a sensor at bottom of rad. This sensor/switch also operates fan on/off according to coolant temperature. You may need to disconnect battery to get at it safely.
Posted on Jan 16, 2009
SOURCE: Bleed cooling system
Assuming you have already filled your cooling system with the proper G12 coolant to the cross-hatch level, open the coolant overflow/fill bottle cap. Leave it off. Start the car and let it idle. Turn your heater on full hot and full fan speed. Let it come up to temp so the thermostat opens up and allows coolant to flow through your system. When the system burps, you'll see air bubbles show up in the overflow tank. Let it cycle a another time and then top off the coolant if needed. Then close up the cap and call it a day.
Posted on Apr 14, 2009
Actually you don't.
What matters is that all cylinders are similar, within 10%.
That could be 110 psi, or 140 psi. Doesn't matter, as long as they are all similar. That is because reading varies with temperature, compression ration, cylinder carbon, oil viscosity, etc.
You only have a problem if one cylinder is much lower then the others.
If they are all lower than 100 psi, then it could be the timing belt is not aligned right.
Posted on Jan 03, 2010
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