My 2005 VW jetta is over heating when idleing or at low speeds with the ac on.

If both hoses are hot, the problem could be the inside...could be a blend door actuator

2000 vw jetta not starting problem solved - YouTube

? 1:56
https://www.youtube.com/watch?v=zvXOynOHywY
Sep 21, 2012 - Uploaded by STF MASSACRE MEDIA
i was on this for days ordered fuel pump accessories i didnt even need and the whole time was a fuse dat regulates to the fuel injectors and gasoline well i ... ... Volkswagen Jetta Won't Crank, Electrical Diagnosis - Part 1 - Duration: ... Duration: 4:05. ...Anyone Have This Problem Starting Their VW Jetta?

VW A3: No Spark Quick Check... - YouTube

? 4:05
https://www.youtube.com/watch?v=X-uxkgveK7M
Oct 7, 2012 - Uploaded by Thomas EXOVCDS
The first part just shows that the hall sensor in the distributor is not. ... VW Jetta No Start - Duration: 4:59. canadacatalyst 51,287 views ... Rabbit & POLO - No Spark at plugs but will bump start - MYSTERY SOLVED! ... VW Jetta won't start? ... 4:05. Ignition Coil Troubleshooting VW 2.0L Golf Cabrio - Duration: ...

VW Jetta No Start - YouTube

? 4:59
https://www.youtube.com/watch?v=eX2lDVCMCNo
Nov 15, 2011 - Uploaded by canadacatalyst
Just go through the basics to see why it will turn over but not start. ... Good diagnosis and repair of catalytic converter on theVW Jetta. ... not start. i believe the fuel pump went bad from sitting long time. no pressure! ... VW Jetta won't start? ... VW A4: 2.0L Replacing Crankshaft Position Sensor / Engine Speed ..

Pressure is not a good indicator of water pump operation. Pressure in the cooling system comes from the heating of the water and its expansion. Jettas come from the factory with plastic impellers on their water pumps. These have a tendency to break and fail, causing overheating issues. Most aftermarket pumps have metal impellers to prevent this from happening. I would seriously consider having the water pump replaced, especially if it is original and you have more than say 60K miles on the car. It's due for a change anyway and may save you your engine. See what this guy had to say about his Jetta.....


Engine Overheating Due to Damaged Water Pump Impeller Volkswagen Jetta...

sounds like throttle body not fitted correctly or needs adjustment of idle sensor or idle speed control

SOUND LIKE ENGINE COOLANT LEVEL LOW.CHECK COOLANT SURGE TANK.IF LOW MORE LIKELY RADIATOR COOLANT LEVEL LOW.ADD COOLANT TO COOLANT SURGE TANK UNTIL COOLANT LEVEL STAY AT FULL COLD MARK DONT OVERFILL OVERFLOW JUG.

Try taking a bar of soup when vehicle is idleing touch it to the sides of the belts your not soppost to use belt spray on surpinten belt But if maltaic sound prositests then water pump or belt tenisioner problem is likelywater pumps wil normaly leak through a hole called the weep hole when there going and you won;t hear matelic noises but the belt tenisinor yes they are a ware part and need to be replaced more often then water pumps and are assocated that kind of noise

They are hosing you big time.Try speed sensor.

Check the water pump... the impeller may be loose and the water/antifreze is not circulating.

If your temp seems to come down when idle or at a stop, it is most likely the water pump.

VW has a known problem with the water pumps breaking. The plastic impeller on the water pump fails cracks.

Do not let your car overheat to the red line, once it beeps, turn it off. Other wise it can damage your engine. In fact watch the temp gauge, as you drive when it gets near the red line turn it off.
Turning your Heater on full will help to cool your engine.

My water pump made it to 84000 miles. I have a 2003 Jetta 1.8T Wolfsburg
At which time my timing belt, thermostat and water pump was all replaced. This saves on labor.
The water pump is driven off the timing belt. So while they are in there get that done.

Your owner’s manual has a Maintenance schedule list, your timing belt should be replaced at something like 60000 miles or so, I am not exactly sure of service schedule as I do not have it in front of me. If your getting your timing belt done, get your water pump replaced to. It will fail eventually.

As for over heating?
When is it over heating?
If you read the Owners manual it clearly states in there these cars run hot, do not let it idle for a long period of time. In the middle of summer in Fl, while sitting idle for long periods of time in traffic with the air conditioning on, my car will over heat a bit. This is normal.
Most people like to start their cars and let them warm up, this car you don’t let it warm up, and again the owner’s manual has this in it.

As for coolant, do not use water or green anti freeze, use G12 (it is red, pinkish) which you can find at Napa, or a Mercedes, VW dealership, in a pinch to top off the coolant you can use Dex Cool, not ideal but it works as G12 is not easily found at wal mart or AutoZone type places, I couldn’t find it there? The people at AutoZone told me Dex Cool is the same as G12, my mechanic says it is not the same. Close but not the same. It will do to top off the coolant.