thermostat?

[apyah]

well no luck for me, decided to drive the car I just got and I think the thermostat is stuck closed, car started to get pretty warm and the was no hot coolant in the overflow tank. I havent checked yet but will, I hope its not the pump. any guesses? I will post the result. Allen 96 camaro z28

[TSTONE]

Engine Overheating
Step
Action
Value
Yes
No

DEFINITION: Engine temperature lamp comes ON and stays ON, or the temperature gauge shows hot, or coolant overflows from the reservoir onto the ground while the engine is running.

1
Check for a loss of coolant. Refer to Loss of Coolant .
Is there a loss of coolant?
--
--
Go to Step 2

2

1. Check for weak engine coolant solution.
2. Do a concentration test. Refer to Coolant Concentration Testing .

Does the engine still overheat?
--
Go to Step 3
System OK

3

1. Check for obstructed radiator air flow or bent radiator fins.
2. If necessary, remove or relocate added-on parts that block air to the radiator. Clean away any bugs, leaves, or other debris.

Does the engine still overheat?
--
Go to Step 4
System OK

4

1. Check for a loss of system pressure.
2. Do a radiator fill cap pressure test. Refer to Radiator Cap .

Does the engine still overheat?
--
Go to Step 5
System OK

5

1. Check for a faulty Engine Coolant Temperature (ECT) sensor. Refer to Section 8A.
2. If necessary, replace the sensor.

Does the engine still overheat?
--
Go to Step 6
System OK

6

1. Check for a damaged coolant recovery reservoir. Check for a leaking or kinked reservoir hose.
2. If necessary, reroute the reservoir hose or replace the recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .

Does the engine still overheat?
--
Go to Step 7
System OK

7

1. Check for a loose accessory drive belt.
2. Check the tension of the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.

Does the engine still overheat?
--
Go to Step 8
System OK

8

1. Check for advanced or retarded ignition timing.
2. If necessary, adjust the timing. Refer to Drive Belt Replacement in Engine Mechanical.

Does the engine still overheat?
--
Go to Step 9
System OK

9

1. Check for blocked cooling system passages. Flush the cooling system. Refer to Flushing .
2. If necessary, remove and inspect the cylinder head.

Does the engine still overheat?
--
Go to Step 10
System OK

10

1. Check for an incorrect or damaged cooling fan blade(s). Check for the correct fan blade(s) part number.
2. If necessary, replace the fan blade(s). Refer to Electric Cooling Fan .

Does the engine still overheat?
--
Go to Step 11
System OK

11

1. Check for inoperative cooling fans. Refer to Engine Controls.
2. If necessary, replace the cooling fan and motor. Refer to Electric Cooling Fan .

Does the engine still overheat?
--
Go to Step 12
System OK

12

1. Check for a stuck closed thermostat. Refer to Thermostat Diagnosis .
2. If necessary, replace the thermostat. Refer to refer to Engine Coolant Thermostat Replacement .

Does the engine still overheat?
--
Go to Step 13
System OK

13

1. Check for a faulty water pump.
2. If necessary, replace the water pump. Refer to Water Pump Replacement .

Does the engine still overheat?
--
Go to Step 14
System OK

14

1. Check for a damaged water pump driveshaft 5.7L (VIN P).
2. If necessary, replace the water pump driveshaft. Refer to Section A or replace the water pump. Refer to Water Pump Replacement .

Is the engine still overheating?
--
Go to Step 15
System OK

15

1. Check the radiator cooling capacity. Refer to Section B.A. Check if the radiator is the proper size for the vehicle.
2. If necessary, determine the proper radiator size and replace the radiator. Refer to Radiator Replacement .

Is the repair complete?
--
System OK
--



Engine Coolant Thermostat Replacement (5.7L VIN P)

Removal Procedure

1. Open the radiator drain ****. Drain the engine coolant from the radiator to below the level of the engine coolant thermostat.
   Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
   Close the radiator drain ****. Tighten
   Tighten the radiator drain **** to 1.5 N·m (13 lb in).
   
   
   
   Remove the air intake duct. Remove the air cleaner. Remove the inlet hose and the clamp from the water outlet. Remove the water outlet bolt/screw from the water pump. Remove the water outlet. Remove the water outlet gasket. Remove the engine coolant thermostat.
2. Clean the gasket surfaces of the water outlet and the water outlet pump.

Installation Procedure

1. 
   
   Install the engine coolant thermostat into the water pump. Install the new water outlet gasket. Install the water outlet. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
   Install the water outlet bolt/screw. Tighten
   Tighten the water outlet bolt/screw to 28 N·m (21 lb ft).
   Install the inlet hose and the clamp to the water outlet. Install the air cleaner. Install the air cleaner duct. Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.
   Add engine coolant, if required. Refer to Cooling System Draining and Filling .
2. Start the engine. After the engine reaches normal operating temperature, inspect for leaks.

[badinfluence]

are the hoses cold?

[81DaytonaPaceCar]

Captain Copy and the Paste Squad to the rescue...lol...

[TSTONE]

easier than trying to explain it all

[apyah]

the top hose was not as hot as you would think, and the coolant in the reservior was cold, tha fan was on when I turned off the car, my first guess would be thermostat, second would be pump. that list is nice but I think thats why my car repairs cost so much lol they have you take off the head before checking the thermostat lol. just kidding I hope its nothing more the car was sitting for the winter I am hoping its just a stuck thermostat, I just had them check it last thursday for level and what temp it was good to even asked them if they thought it needed flushed and they said it looked good. I was goint to have it flushed just to do it. I did the oil also. Allen

[BP_Z28]

your not doing it yourself? Thats alot of going back and forth and $ for labor for something your not quiet sure of yet.

well unless they are checking it for free

[apyah]

and the survey says.......

took the old thermostat out put it in boiling water it didnt open, bought new one installed it everything appears good. now off to the oil leak............. thank you for the help, Allen

[BP_Z28]

gotta love like a $15 fix!