2002 VW Jetta 1.8T has a leak somewhere.Need diagram

Malinda, Order the routing sticker through the dealer if available or go to auto recycler and take picture, down load and print, laminate and stick on your car. Check the attached links pics. of vacuum lines. Good luck
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I need a diagram showing where the water pump is located on a 01 vw jetta

The most likely cause is loss of power assistance to the braking system which means you will need to apply increased brake pressure to compensate for the loss of assistance.

The problem will be with the brake servo assist. It is possible there is a leak in the brake servo assist system, which reduces the vacuum, so you are not getting sufficient mechanical assistance when applying the brakes.

It is unwise to be driving the car with this condition. If you lose all power assistance to the brakes, which could easily occur with this fault, the pedal will become very hard, you will need to apply very high pedal pressure and the vehicle will be very difficult to stop. You need to take the car to a VW dealer for service or to a competent brake specialist in your area to inspect the system and rectify the fault.

VW did a recall on some earlier year models for a leaking brake servo and I understand the problem was a faulty vacuum hose which would fail and leak. I am not aware of any recall for this item on later models like your 2004 vehicle.

All the best.

It runs next to the high pressure hose from the pump to the reservoir. It's 3/4 inch hose, it's held on with clamps, unlike the high pressure hose that has compressed fittings. Your best bet is to remove the hose and match it up with a parts store.

That is the sunroof drain hose. Cut the tips off with a razor blade on the driver's side also.

The rear drains are underneath the car inside of the wheel wells but don't clog as often as the front ones.

i was a water leak specialist for vw and mainly the leaks are from around the rubber at the windshield as well as follow down through the antenna the 2 fuses under the drivers dash are 45.00 each 20 years ago im sure three more than that now ...use a garden hose and start low and after a few minutes raise it little by little until leak is found as well as a 2nd person in the vehicle with a light to look for the leak you may caulk or of that nature using tape to ensure a nice straight line on the windshield and not make a mess sometimes it even comes from the fenders and so look carefully and raise the hose upwards going slowly allowing the water to penetrate the area in which it finds its way in

recheck fuel line routing

It could be the hose clamp if that's where is leaking from, but if the water pump has some miles on it, it could be time for a new water pump. Good luck

You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.

turn your heater on to max heat and high fan. then see if you can feel the hoses on the firewall for heat they should be hot. make sure that the fan unit on the radiatoris working if the upper radiator hose is hot the fans should be running if they are not that means that either the relay is bad the thermo sensor is bad or the fan unit is shot... please rate the solution..........thanks