Need help troubleshooting Cooling problem

[Xdt]

Dynomite,

The Injector housing manifolds do get warm within a minute.
I know the Thermostat is correct, purchased it from Jerry.
The belt was removed, and I verified per manual that routing was correct.

Explanations for "coolant was overflowing through reservoir high fill"

The coolant leaks past the pressure cap which is located on the black plastic tank located on passenger side of car. Instead of flowing to the white overflow tank , the coolant spews past the pressure cap on the black tank.

Please elaborate on Thermostat installation. I thought I installed new Thermostat as the old Thermostat. But, I could have made an error.

Thank you again for the assistance.

[Dynomite]

Originally Posted by Xdt

Instead of flowing to the white overflow tank , the coolant spews past the pressure cap on the black tank.

Please elaborate on Thermostat installation. I thought I installed new Thermostat as the old Thermostat. But, I could have made an error.

Thank you again for the assistance.

I am assuming the vent between the Black Tank in front of passenger side windshield and the White Overflow tank beneath the passenger side headlight is not blocked.

Looking at the photo.......I do not know how you can install it the wrong way but may be crooked or maybe the wrong way.
The Bottom of the thermostat in the photo faces toward the drivers side in the thermostat housing.

The Top of the thermostat with the gasket faces into the part of the thermostat housing toward the Passenger Side. The black gasket is sandwiched in a groove between the Passenger Side and Drivers Side halves of the thermostat housing. It is difficult but using a putty knife to hold the thermostat in place during assembly does work.

Thermostat rubber seal install TIPS




See Item #6 Blocking TB Coolant, Fluidyne Radiator and Thermostats

[mike100]

I had trouble the first time I refilled water after a radiator job/ injector pull- I don't recall what the repair was, but i do remember worrying that I could not bleed the air bubble out of the top of the engine to restore flow.

A quick way to know if the water pump has a head of water coming through it is to remove the expansion tank cap to see if the rubber vent line near the cap has a stream of water pissing back into the tank. If not, then jack up the passenger side of the car as high as your highest jack will take it. Start the car and top up the system. This has purged the air pocket every time for me.

[Dynomite]

Originally Posted by mike100

I had trouble the first time I refilled water after a radiator job/ injector pull- I don't recall what the repair was, but i do remember worrying that I could not bleed the air bubble out of the top of the engine to restore flow.

A quick way to know if the water pump has a head of water coming through it is to remove the expansion tank cap to see if the rubber vent line near the cap has a stream of water pissing back into the tank. If not, then jack up the passenger side of the car as high as your highest jack will take it. Start the car and top up the system. This has purged the air pocket every time for me.

His Injector Housing Coolant Manifolds get warm within a minute of starting the engine.....his Water Pump is Pumping Coolant

[Xdt]

Dynamite,
i have the thermostat installed as you described. However, based on the link you have provided I appears the thermostat should be oriented with the slots in a horizontal position. If this is true would the slots in a vertical position cause my problem?

[Dynomite]

Originally Posted by Xdt

Dynamite,
i have the thermostat installed as you described. However, based on the link you have provided I appears the thermostat should be oriented with the slots in a horizontal position. If this is true would the slots in a vertical position cause my problem?

NO EFFECT ........vertical or horizontal is the same as far as coolant flow.

From your description it appears to me that you have coolant squirting out of the coolant cap on top of the Black Coolant Reservoir???
That is strange......maybe the wrong coolant cap .........maybe coolant path blocked to Overflow tank.........

Do you have a 15 psi cap?
Your Coolant path between the white tank and black tank has got to be clogged.
Or......you have so much flow to the Black Tank that that the path between the two tanks cannot handle the flow raising the pressure above 15 psi........which means something else is going on.

Or.....the white coolant tank is not vented....but 15 lbs would blow that cap off.....

[Xdt]

Yes, my problems are fans not running as temp climb and coolant squirting out of Black Coolant Reservoir.
Pressure cap is 17lb GM unit, I will check coolant path tomorrow evening.

Thanks to all that have provided feedback, greatly appreciated. Please continue to post all ideas.

[Dynomite]

Originally Posted by Xdt

Yes, my problems are fans not running as temp climb and coolant squirting out of Black Coolant Reservoir.
Pressure cap is 17lb GM unit, I will check coolant path tomorrow evening.

Thanks to all that have provided feedback, greatly appreciated. Please continue to post all ideas.

I recall Secondary fan turns on at 228 deg F and Primary fan turns on at 219 deg F.
I also recall fans turn off with a drop of 11 deg F more or less. With a chip....Marc sets the fans on at 205 deg F and off at 200 deg F.

If you are running with a 180 deg Thermostat on a cool day......you would not see the fans come on at all unless you have a chip.

You pressure cap (radiator cap on top of black coolant tank) could be suspect also. You really do not say what the coolant temperature is.....Using HVAC......push and hold two fan up and down button at same time getting a zero....then up fan looking for 16. Then push center fan button and read coolant temperature in deg C.

90 C = 193 F
93 C - 199 F
95 C = 202 F
97 C = 206 F
100 C = 211 F
105 C = 220 F
110 C = 230 F

[A26B]

Originally Posted by Xdt

.........The coolant leaks past the pressure cap which is located on the black plastic tank located on passenger side of car. Instead of flowing to the white overflow tank , the coolant spews past the pressure cap on the black tank. .........

I don't think you have the pressure cap all the way installed. Press down hard & turn more to the right. You are probably just half way on.

[Dynomite]

Originally Posted by A26B

I don't think you have the pressure cap all the way installed. Press down hard & turn more to the right. You are probably just half way on.

There you go......

and his 17 lb cap will take a couple more pounds push than the 15 lb cap