Question about 1988 Volkswagen Jetta

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1999 jetta overheats until heat is on full blast

My car overheats after twenty mins of stop and go traffic when I turn on interior heat the car goes back to normal temp

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You should start by checking the thermostat for the radiator. It controls the flow of coolant to your engine. Turning on the heater allows the coolant to circulate through another type of radiator. You should also check your radiator fluid to make sure you have enough( the fluid should be changed around every 5 years).

Posted on Jul 03, 2013


6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 166 Answers

SOURCE: jetta 1999 transmission fluid

the fluid goes in through a plug in the top of the auto it is not recommended that you check it as it take a particular type of fluid that only VW uses and the transmission is not ment to be serviced.
if the car is having trouble taking of the transmition might be about to fail our it might be low on fluid sagest to your boy friend that he checks for leaks and if he find one take it into VW to get repaird.
unfortunatly these cars are expensive to fix and your average machanical minded person dose not have the corect service tools to do so

Posted on Dec 19, 2008

  • 82 Answers

SOURCE: 1997 jetta td, coolant is leaking, but car is not overheating

look at all your hoses and the seams on your rad, you will find the seams at each end of the rad, see thats its not liking from ether side. locate and look around your water pump the gasget maybe bad, and be sure look at your drain valve, if its plastice change it to metal if you can the plastice can wear out faster and can become brittle

Posted on Feb 23, 2009

  • 173 Answers


Give the 'Lucas Transmission fix' a go. It seems expensive for the 'bottle capacity'.
But as long as the box isn't totalled, or if it's just plain 'old', it could very well be, worth it.
It's actually GAURANTEED to work.
I used it one time, in on of my '3rd gen' Honda preludes.
It was the 2 lt 16v Auto 4ws with the 'face lift' etc.
I bought the car for less than 100 bucks, and the milo' didn't work either.
I used that baby for Months and Months thanks to that stuff!)
Follow the instructions & Give it a blast.
Good luck with that, and please don't forget to rate:)

Posted on Jul 28, 2009

  • 80 Answers

SOURCE: I have a 2002 Volkswagon Jetta and just started to

In traffic there's no cooling. If there's no wind you should turn on the fan. :)

Posted on Aug 08, 2009

SOURCE: Flushing cooling system in 95 jetta, air inside car cold

There Must Be Any Bleeding Screw On Any Hose Of Coolant, After adding Coolant Keep Open that Bleeding Screw For A 15min With Idle Speed It Will Help To Remove Air From Cooling system., Then Check Temp Sensor OF Radiator That May Got Problem , Only Tow Things Could Be The Problem. Thanks

Posted on Jan 15, 2010

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