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I am not getting heat on my 1993 Buick Centry. 3.3 liter. We hav changed he themostat, changed the water pump and flushed the heater core. The car does not over heat and have flushed and changed all fluid. Any idears??????????

Submitted: 29 days and 23 hours ago.

Category: Car

Value: $23

Status: CLOSED

Year: 1993
Make: Buick
Model: Buick
Engine: 3.3

Already Tried:
Flushed and checked all hoses, Changed the thermostat, flushed the heater core, Flushed the radiator and changeed the fluid, installed new water pump.

Posted by Matt J 29 days and 23 hours ago.

Info Request

Hello my name is Matt and I will be more than happy to assist you.

With the car fully warmed up do the heater core hoses feel hot?

29 days and 23 hours ago.

Reply

ver hot no, hot yes. If I disconnect the hose hot water will travel through the core, If you feel the core it is only warm on the bottom and the heat is not traveling up the core. The water in the system is hot an the cooling fan comes on as expected.

Posted by Matt J 29 days and 23 hours ago.

Answer

If it is hot in one hose and warm at the other then your problem is not in the cooling system.

Your problem with be with the Heater Blend Door, Heater Control Head, or a vacuum leak.

View Full Image
.

29 days and 23 hours ago.

Reply

blend dor is correct, if yu put your hand on the heater core it is not hot. I raced the motor, like 4000 rpms and it started to warm up, when you return to idle or low rpm it cools right down.

29 days and 23 hours ago.

Reply

Vacuum is also working, transfers air to heater, defrost, etc.

Posted by Matt J 29 days and 23 hours ago.

Info Request

Does the temp gauge go up to normal or is it lower than normal?

29 days and 22 hours ago.

Reply

Does not have a temp gauge, however, it is coming up to full temp. If you losen the cap, it will boil out a little, which every car I have every had did.

29 days and 22 hours ago.

Reply

Do you have a print of the heating system, hoses, etc, that shows where they go? If you can send it, I will accept that as my answer, maybe the heater core hoses are backwards or something. This is a used wnter beater, not my normal car. I am not sure what the first owner might have done.

Posted by Matt J 29 days and 22 hours ago.

Info Request

I wish I did but the vehicle is to old for GM's online guides, and my two other programs are not helping either. But the part list does list off a Heater Control Valve. I'm unsure if your vehicle has one or not.

From the heater core follow the hoses to the engine. at any point is there a plasic valve connected to one of the lines before they connect to the engine?

29 days and 22 hours ago.

Reply

I don't think so, the hose starts off with a niple just above the water pump, goes into the heater core, the hose that come out of the core goes around the back of the motor (metal pipe) and goes back in into the intake manifold just above the themostat. No valves.

Posted by Matt J 29 days and 22 hours ago.

Info Request

Was the heat your main problem or did this start after a repair you did?

29 days and 22 hours ago.

Reply

The car had no heat when I got it, it runs great, did not cost me anything for the car

Posted by Matt J 29 days and 22 hours ago.

Info Request

Remove the hose from the heater core that goes to the top of the engine (not to the water pump) put the hose into a gallon container. start the vehicle and see how long it take to fill the container up.

How long did it take?

29 days and 22 hours ago.

Reply

It starts to flow and the stops, wait a few seconds and flows again, then stops, and then seems to stop it would not be enough to fill a gallon. I did that when flushed the system.

Posted by Matt J 29 days and 22 hours ago.

Answer

The either you are low on coolant in the engine or there is a blockage in side the engine.

29 days and 21 hours ago.

Reply

How many gallons would it take to fill the system? I was thinking it as the radiator where the water could not flow through fast enough to supply the water pup side. If you have the capacity it would help and we will call it a day.

Accepted Answer

Spec is 12.7 Quarts or just a little over 3 gallons.

Accepts:
Expert:	Matt J
Pos. Feedback:	100.0 %
Answered:	10/24/2009

ASE Certified Technician

ASE Certified Master Tech,10+ Yrs Experince All Makes,Advance Training GM, Toyota ,VW, Kia,Plus More

29 days and 21 hours ago.

Reply

Thanks Matt, I will drain it tomorrow. I don't think it will take three gallons. I am leaning toward the raditor. The fluid that was in there was nasty and it looks pretty bad for what I can see inside.

I am going to accept the answer, we gave it hell, and tomorrow is another day. Pleas send me an email if you think of anthing else I might try tomorrow.

XXXXX@XXXXXX.XXX

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Question

I am not getting heat on my 1993 Buick Centry. 3.3 liter. We hav changed he themostat, changed the water pump and flushed the heater core. The car does not over heat and have flushed and changed all fluid. Any idears??????????

Optional Information

Year: 1993Make: BuickModel: BuickEngine: 3.3 Already Tried: Flushed and checked all hoses, Changed the thermostat, flushed the heater core, Flushed the radiator and changeed the fluid, installed new water pump.

Info Request

Hello my name is Matt and I will be more than happy to assist you. With the car fully warmed up do the heater core hoses feel hot?

Reply

ver hot no, hot yes. If I disconnect the hose hot water will travel through the core, If you feel the core it is only warm on the bottom and the heat is not traveling up the core. The water in the system is hot an the cooling fan comes on as expected.

Answer

If it is hot in one hose and warm at the other then your problem is not in the cooling system. Your problem with be with the Heater Blend Door, Heater Control Head, or a vacuum leak. View Full Image .

Reply

blend dor is correct, if yu put your hand on the heater core it is not hot. I raced the motor, like 4000 rpms and it started to warm up, when you return to idle or low rpm it cools right down.

Reply

Vacuum is also working, transfers air to heater, defrost, etc.

Info Request

Does the temp gauge go up to normal or is it lower than normal?

Reply

Does not have a temp gauge, however, it is coming up to full temp. If you losen the cap, it will boil out a little, which every car I have every had did.

Reply

Do you have a print of the heating system, hoses, etc, that shows where they go? If you can send it, I will accept that as my answer, maybe the heater core hoses are backwards or something. This is a used wnter beater, not my normal car. I am not sure what the first owner might have done.

Info Request

Reply

I don't think so, the hose starts off with a niple just above the water pump, goes into the heater core, the hose that come out of the core goes around the back of the motor (metal pipe) and goes back in into the intake manifold just above the themostat. No valves.

Info Request

Was the heat your main problem or did this start after a repair you did?

Reply

The car had no heat when I got it, it runs great, did not cost me anything for the car

Info Request

Remove the hose from the heater core that goes to the top of the engine (not to the water pump) put the hose into a gallon container. start the vehicle and see how long it take to fill the container up. How long did it take?

Reply

It starts to flow and the stops, wait a few seconds and flows again, then stops, and then seems to stop it would not be enough to fill a gallon. I did that when flushed the system.

Answer

The either you are low on coolant in the engine or there is a blockage in side the engine.

Reply

How many gallons would it take to fill the system? I was thinking it as the radiator where the water could not flow through fast enough to supply the water pup side. If you have the capacity it would help and we will call it a day.

Accepted Answer

Spec is 12.7 Quarts or just a little over 3 gallons.

Reply

Related Car Questions

Year: 1993
Make: Buick
Model: Buick
Engine: 3.3

Already Tried:
Flushed and checked all hoses, Changed the thermostat, flushed the heater core, Flushed the radiator and changeed the fluid, installed new water pump.

Hello my name is Matt and I will be more than happy to assist you.

With the car fully warmed up do the heater core hoses feel hot?

If it is hot in one hose and warm at the other then your problem is not in the cooling system.

Your problem with be with the Heater Blend Door, Heater Control Head, or a vacuum leak.

View Full Image
.

Remove the hose from the heater core that goes to the top of the engine (not to the water pump) put the hose into a gallon container. start the vehicle and see how long it take to fill the container up.

How long did it take?