2000 Jetta GLS 2.0 Overheating

SOURCE: Overheating Barina

what is heater tap you saying right name for it? if something is blocked the overflow bottlw wouldnt do anything here an idea to check u have 2 hoses running from the rad check if both are hot if not then rad is blocked or water pump is shot sometimes you can tell if water pump is shot is there is a hole near the spindle if it has antifreeze coming out even a little needs to be repaired replace actually more i think about iut you do have water pump prblem

Colin Stickland

• 22516 Answers
• Posted on Dec 22, 2008

SOURCE: coolant problems 2000 vw jetta

plastic impeller on water pump has come adrift

SOURCE: overheating

Here are the cooling system diagnostic steps...First does the cooling fan kick on (with engine hot)? If not, check the fuse, if good then check the thermoswitch in the radiator (it's about an inch and a half in diameter located on the lower part of the radiator with two wires ) by disconnecting the wires and touching them together (again, with engine hot...at least 190 degrees) if the fan comes on, you have a bad switch. If not connect a 10 gauge jumper wire from the battery to the fan itself (there are three terminals,,, one high, one low and ground). With power direct from the battery (and a ground wire, if necessary) fan should run... if not replace the fan assembly... if it does run then you have a bad cooling fan relay. If the cooling fan system is working normally and you still are overheating, the next thing to check is for coolant flow. let the engine cool and remove the reservoir cap and start it and let it run to operating temp. The upper hose should warm up and you should see a thin stream of coolant entering the reservoir... if not let it cool again, raise the vehicle, place a drain pan beneath the engine and remove the T-stat from the housing and button it back up. run again to operating temp... if you now have flow, and it doesn't overheat it was the 'stat. If it still overheats look at the water pump... is it noisy while running? is it weeping coolant? if so replace the pump. if not it's time to suspect a radiator blockage... try backflushing, if it seems to take alot of pressure and very little come out the other outlet the radiator is at least partially clogged and should be rebuilt or replaced... Hope this helps...;-)

SOURCE: keeps overheating,although i add coolant!

Most likely scenario is you could have a bad thermostat. Remove it check it and replace it if found faulty.Mike

SOURCE: Overheating

Should just be the two bolts holding the metal cover on. Follow the top radiator hose if you aren't sure where it is.

Before you do this, make sure you check your coolant level to make sure it isn't just low.

Hope this helps.