Water will not leave engine to make heat

RICKNET

MEMBER
1984 OLDSMOBILE DELTA 88
5.0L
V8
2WD
AUTOMATIC
350,000 MILES

I have replaced heater core, water pump, thermostat, heater control value, bypass heater control value, and replaced radiator. Water does not leave engine. Help please

Thursday, December 15th, 2016 AT 6:29 AM

3 Replies

HMAC300

MECHANIC
48,601 POSTS

So you heater hoses are not getting hot? Try a new radiator cap and if that does not work try pinching off upper radiator hose as there are no air bleeds on this car. Then check for a vacuum leak the water valve must get vacuum in order to work. If this is auto temperature control where you set the temperature. Get back to me because there is a certain way to do things on this for heat.

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Thursday, December 15th, 2016 AT 7:50 AM

RICKNET

MEMBER
2 POSTS

Thanks for advice, however, I have replaced radiator cap, replaced heater control switch on engine, taken vaccum line off and direct line to heater core from engine and have pitched water hose.

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Saturday, December 17th, 2016 AT 7:11 AM

HMAC300