overheating after overhaul

1998 AUDI A4
250,000 MILES • 1.8L • 4 CYL • TURBO • FWD • MANUAL
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GEORGERINGIRISAI
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Engine overheats after a short drive of less than five km. Put new head gasket on engine. Head went for skimming, but not pressure testing. Car has closed circuit cooling system.
Jan 2, 2017 at 10:41 AM
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JOHNNY G.JR
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Have cooling system pressure tested. check level of antifreeze in radiator and reservoir first. Compression test cylinders, then a cylinder leakdown test. Exhaust steam would show bad gasket or cracked head or block.
Jan 3, 2017 at 1:07 AM
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GEORGERINGIRISAI
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Thanks will check on exhaust steam and give update.
Jan 3, 2017 at 2:11 AM
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STRAILER
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Hey GEORGERINGIRISAI,

It sounds like you have a stuck thermostat. Here are a couple of guides that will help you get the problem fixed.

https://www.2carpros.com/articles/replace-thermostat

and

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Please let us know what you find so it will help others.

Best, Ken
Jan 6, 2017 at 3:48 PM
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GEORGERINGIRISAI
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I also discovered that the oil cooler was by-passed.
Jan 8, 2017 at 8:41 PM
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STRAILER
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That is good but it wont cause the engine to overheat in 5km. Have you done the thermostat?
Jan 8, 2017 at 10:21 PM
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GEORGERINGIRISAI
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Where can I locate the thermostat on an Audi A4 1.8T 1998 model
Jan 10, 2017 at 8:27 AM
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STRAILER
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Hey GEORGERINGIRISAI,

It is in the bottom of the water pump, here is a diagram to help find it.

Let us know what happens.

Best, Ken
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Jan 10, 2017 at 11:16 AM