over heating
Asked by Mike Mar 06, 2017 at 01:47 PM about the 2001 Volkswagen Passat GLX 4Motion
Question type: Maintenance & Repair
Hello i just got back from a long 1 hour drive and my car was not showing that
it was over heating by the thermostat but my over flow pissed out all my water
in my rad . ive got a new rad a new water pump new thermostat any idea why
this damn car is being a bitch to me ? lol
4 Answers
also my car wont lock i turned the key to far and it turned about 30- dgreez over. now i can't arm my alarm . LOL one thing fter another with this dmn car i tell ya.
So it did this AFTER replacing radiator, water pump, and thermostat? How well was the cooling system burped of air after the work was done? New radiator cap on the radiator as well? Try burping air out again, if it happens again try using Block Tester on it and see if a blown head gasket is over-pressurizing the cooling system.
yes ive got so much money into this car now its crazy. new rad cap not sure if it burped i'll try block tester . is that the same as barsleak ? how do you burp it ?. i really appreciate all your help Ken
Try the bleeding instructions here: http://www.passatworld.com/forums/volkswagen-passat-b5-discussion/276832-how-bleed-cooling-system.html, there are several youtube vids you can try as well, just make sure you do this with heater on. Block Tester is a tool that checks for the presence of hydrocarbons in the coolant, those hydrocarbons are the byproduct of combustion gases and a clear sign that your head gasket is blown and allowing such gases to get into the water jacket. You can buy the setup for about $50, but a lot of auto parts stores will rent or even loan out the apparatus. Takes about 15 min to run the test. You replaced a lot of your cooling system, so hopefully it was just trapped air. Anytime you have the hoses off and emptied, they are full of air, and you have to slowly add coolant to system to give that air time to get pushed out. If you just topped off rad (or degas bottle) with coolant, the first time you run it you're going to get a geyser of coolant going everywhere.
