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Overheating after overhaul

Tiny
GEORGERINGIRISAI
  • MEMBER
  • 1998 AUDI A4
  • 1.8L
  • 4 CYL
  • TURBO
  • FWD
  • MANUAL
  • 250,000 MILES
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.
Monday, January 2nd, 2017 AT 10:41 AM

7 Replies

Tiny
JOHNNY G.JR
  • MECHANIC
  • 320 POSTS
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.
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Tuesday, January 3rd, 2017 AT 1:07 AM
Tiny
GEORGERINGIRISAI
  • MEMBER
  • 4 POSTS
Thanks will check on exhaust steam and give update.
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Tuesday, January 3rd, 2017 AT 2:11 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
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
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Friday, January 6th, 2017 AT 3:48 PM
Tiny
GEORGERINGIRISAI
  • MEMBER
  • 4 POSTS
I also discovered that the oil cooler was by-passed.
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Sunday, January 8th, 2017 AT 8:41 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
That is good but it wont cause the engine to overheat in 5km. Have you done the thermostat?
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Sunday, January 8th, 2017 AT 10:21 PM
Tiny
GEORGERINGIRISAI
  • MEMBER
  • 4 POSTS
Where can I locate the thermostat on an Audi A4 1.8T 1998 model
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Tuesday, January 10th, 2017 AT 8:27 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
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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Tuesday, January 10th, 2017 AT 11:16 AM

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