Question about 1999 Oldsmobile Intrigue

2 Answers

Overheating My car still overheats after replacing the water pump, thermostat, and coolant tank cap. Also replaced the serp belt. Ran ok for a while (like 40 miles) then overheated.

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  • john23_05 Jul 17, 2008

    No radiator cap, it has a coolant recovery tank that is at the cold line. In order to fill the radiator you have to fill it from the recovery tank.

  • john23_05 Jul 18, 2008

    Also the cooling fans run as they should.

  • john23_05 Aug 16, 2008

    After all was said and done it appears my head gaskets were bad.

  • Anonymous Mar 24, 2014

    RECENTLY HAD A HOSE BREAK. SON REPLACED IT BUT ENGINE STILL OVERHEATING. HE REPLACED THERMOSTAT BUT STILL OVERHEATS.
    WHAT COULD BE PROBLEM?

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2 Answers

Not too sure I ended up taking to the shop. They are going to change the thermostat for the second time and if that doesn't work they are thinking blown head gaskets.

Posted on Jul 20, 2008

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  • 68 Answers

Hi john
im dave

check the level in your coolant resorvoir jug and then in your radiator when cold
post your findings

Posted on Jul 17, 2008

  • dave barry Jul 20, 2008

    hi john

    Dave here





    Sorry for the delay in getting back to you as I had to go out of town. You did not mention whether or not your coolant level is staying stable or not. When the car is cold is it at the same level as last time it was cold?

  • dave barry Jul 20, 2008

    i wouldnt let them replace your thernostat 2x. it is unlikely your thermostat was blown in the first place and even more unlikely that a second new one is no good. i hate how shops say we will try this and if not maybe that. that is not good enough for me ever. if i have the vehicle in front of me i will tell you it IS this or it IS NOT that. they are supposed to diagnose the issue not change parts blindly until they eventually pin the tail on the donkey. What a bunch of donkeys. If you have a blown head gasket it is very easily detected. so if they tell you it is blown ask them how they know before you throw away 800-1000 dollars.

    dave

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My 2002 saturn boils over but does not overheat sometimes i will drive across town and all is fine sometimes i will drive 7 miles and reservoir will boil over.im guessing thermistat water pump or cap


Of the water is boiling them it has run hot. There is no way around this fact. Get a compression test done first. This should reveal if any damage has been done. Then address the boiling off problem. This can be a air pocket in the line, incorrect anti freeze mixture, sticking thermostat, water pump, cap, etc.

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Are the cooling fans coming on ? Go under the hood in the engine compartment , with the vehicle running have some one turn on the A/C , do you see and or hear the cooling fans come on ? Could be the coolant temperature gauge is bad ! How many miles on the vehicle ? Ever have water pump replaced ?

1

Check for a loss of system pressure.
Is there a loss of system pressure?
--
Go to Step 2 yes
Go to Step 3 no

2

Inspect and repair any faulty hose connections.
Does the engine still overheat?
--
Go to Step 3 yes
System OK

3

Check for low coolant protection (-37?°C/-34?°F).
Is there low coolant protection (-37?°C/-34?°F)?
--
Go to Step 4 yes
Go to Step 5 no

4

Test solution. Replace the coolant if necessary.
Does the engine still overheat?
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Go to Step 5 yes
System OK

5

Check the water pump belt for low tension.
Is the water pump belt tension too low?
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Go to Step 6 yes
Go to Step 7 no

6

Replace the water pump belt tensioner.
Does the engine still overheat?
--
Go to Step 7 yes
System OK

7

Check for an inoperative thermostat bypass.
Is the thermostat bypass inoperative?
--
Go to Step 8 yes
Go to Step 9 no

8

Replace the bypass.
Does the engine still overheat?
--
Go to Step 9 yes
System OK

9

Check the water pump.
Is the water pump inoperative?
--
Go to Step 10 yes
Go to Step 11 no

10

Replace the water pump.
Does the engine still overheat?
--
Go to Step 11 yes
System OK

11

Check the radiator fins for obstruction.
Are the radiator fins obstructed?
--
Go to Step 12 yes
Go to Step 13 no

12

Inspect and clean the radiator fans.
Does the engine still overheat?
--
Go to Step 13 yes
System OK

13

Check the cooling system passage for obstruction.
Is the cooling system passage blocked?
--
Go to Step 14 yes
Go to Step 15 no

14

Inspect and flush the system. Reroute or replace the hose if necessary.
Does the engine still overheat?
--
Go to Step 15 yes
System OK

15

Check the water pump belt for damage.
Is the water pump belt damaged?
--
Go to Step 16 yes
Go to Step 17 no

16

Replace the water pump belt.
Does the engine still overheat?
--
Go to step 17 yes
System OK

17

Check the cooling fans.
Are the cooling fans inoperative?
--
Go to Step 18 yes
Go to Step 19 no

18

  1. Inspect the electrical connector. Replace if necessary.
  2. Does the engine still overheat?
--
Go to Step 19 yes
System OK

19

Check the throttle body circuit flow.
Is the throttle body circuit flow restricted?
--
Go to Step 20
Go to Step 21

20

  1. Inspect the orifice and associated hose. Replace if necessary.
  2. Does the engine still overheat?
--
Go to Step 21
System OK

21

Check for a stuck thermostat.
Is the thermostat stuck in the closed position?
--
Go to Step 22
--

22

Replace the thermostat.
Does the engine still overheat?
--
--
System OK

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Clean/check/change the thermo sensor,contact and wire.

===

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This test will kill two birds with one stone.

===

MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!

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===

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===

A coolant flush is require every 2 years or 24,000 miles.

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