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vwnewton, VW Owner,ASE Master and L1 Advanced
Category: VW
Satisfied Customers: 307
Experience:  25 years of VW obsession turned into a job, last 15 years as a VW Tech.
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I have a 03 jetta 2.0l and it started overheating. there was

Customer Question

i have a 03 jetta 2.0l and it started overheating. there was no leaks in hoses so i thought it was the thermostat.i put a new one in and filled it with antifreeze and started the car it stayed cool until i tighten the radiator cap then the meter shot up but when i loosen it it cooled back down. any help would be appreciated.
Submitted: 2 years ago.
Category: VW
Expert:  I. Silva replied 2 years ago.

Hello...welcome and thank you for using Justanswer.

If the coolant system is full and the temperature gage goes up really fast ,matter of 4/5 minutes ,the problem is going to be the water pump ,the pump propeller is made out of plastic and with the years/heat ,it broke off the shaft and is not making the coolant flow through the engine.

Do you get good heat inside the vehicle with engine at idle ?

Remove the heater hoses from fire wall and start the engine to see if there is good flow ?

Good luck.

Let me know.

Thank you.

Expert:  I. Silva replied 2 years ago.
Hi there ...have you work on your vehicle yet ?
Do you need any further info ?
Let me know.
Thank you very much.