Hard restart after reaching normal operating temperature
1999 Intrepid with 3.2 engine. I drive the car around town for a while until it reaches normal operating temperature then shut it off, 10 to 15 minutes later I attempt to start it and it spins over but won't catch. Let it cool down completely and it starts right up. This has happened 3 times now.
Re: Hard restart after reaching normal operating...
Little odd and this might just be a helpless guess. But sounds like two things to me ether your starter... Does the motor try to turn over or just a spinning sound? And my other guess is its the computer. And to make matters worse I would really recommend take it to the dealer if it is the computer. Now mind you I don't have a clue what im talking about I only work on my own cars but since one got to you yet just thought I would give you my two cent
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No one ever said new means good. Try another thermostat. Make sure it is the recommended temp for the vehicle. I would spend the extra money to buy a dealer thermostat. What controls temp is restriction of flow thru the system until a set temperature is reached and the thermostat opens. Has to be a thermostat.
It could be a plugged heater core or heater control problem. I assume the blower is working, but the air is cold. The first thing to check is the coolant level, make sure there is coolant in the resivoir. Next see if the temerature gauge reaches the normal operating temperature range. If the gauge reads cold most of the time, it would tell you that the thermsotat is faulty and not allowing the engine to reach full operating temperature. If your car doesn't have a temp gauge, the blue cold engine light might stay on for an extended period of time. The thermostat is supposed to not allow coolant flow in the radiator until the engine reaches operating temperature. If you drive the car for a couple of minutes, from cold start, the radiator or upper hose should be cool until the engine reaches operating temp.
Heed of antifreeze coolant temperature!!! First time you might check the thermostat operating. The thermostat location for VW Golf 1.6 is inside of coolant thermostat housing placed on back side of the cylinder head. See pictures below. Thermostat checking: 1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!! 2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg. 3. The thermostat opening temperature is 87 C deg. 4. If the hose is already warm the thermostat is out of order.
Thermostat location, Part number: 032121110B, in german - "Kuehlregle" (Price around $20):
Important note: Always replace the thermostat round seal, position 6 in the above picture.
Any engine, when cold, takes at least 3 miles before reaching operating temperature.. After reaching operating temp it still takes a mile or 8(depending on your vehicle) before "over" temperatures are reached. Therefore if needed, a vehicle can be driven several miles without any coolant/water at all before overheating and causing damage, if started from from cold.
Sounds like the heater coil valve is not opening all the way if your car reaches the normal operating temperature or there is a blockage in the heater coil. If it is reaching normal operating temperature look on the engine firewall and locate the heater control valve. It will have the 3/4 inch heater hose attached to it and you will see a cable connected to operate the valve. Manually open the valve and see if this produced heat. Sometimes the cable gets stuck or bent and needs replacment.