Question about 2000 Chevrolet Silverado

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Coolant comes out sometimes when I stop. Not

Coolant comes out sometimes when I stop. Not every time. Vehicle does not run hot. Reservoir cap has been replaced. No leaks found wirh pressure check.

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If its getting a bit hot - some coolant could come out of the over-flow..
Maybe from a fan not working or getting week..

Posted on Jul 18, 2009

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Water pump weep hole?

Posted on Jul 18, 2009

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1 Answer

What causes a heater to stop blowing hot air just cold in a 2005 grandam


Low coolant. Check for leaks. Could be the reservoir cap and the hose that goes from the radiator to the reservoir. No kinks in the hose.

Feb 19, 2015 | 2005 Pontiac Grand Am

Tip

Vehicle overheating tips


If your vehicle engine coolant temperature gauge indicates overheating, if you experience a loss of power,or if you hear a loud knocking or pinging noise, the engine has probably overheated. You should follow this procedure............

Pull safe off the road, stop the vehicle and turn on our emergency flasher. Put the transmission in "P" (automatic) or neutral (manual) and apply the parking brake. Turn off the air conditioning if it is being used.

If coolant or steam is boiling out of the radiator or reservoir, stop the engine. Wait until the steam subsides before opening the hood. If there is no coolant boiling over the steam, leave the engine running. CAUTION: To avoid personal injury, keep the hood closed until there is not steam. Escaping steam or coolant is a sign of very hing pressure.

Visually check to see if the engine drive belt (fan belt) is broken or loose. Lock for obvious coolant leaks from the radiator, hoses, and under the vehicle. However, note that water draining from the air conditioning is normal if it has been used. CAUTION: When the engine is running, keep hands and clothing away from the moving fan engine drive belt.

If the engine drive belt is broken or the coolant is leaking, stop the engine immediately and call your mechanic of assistance.

If the engine drive belt is okay and there are no obvious leaks, you may help the engine cool down more quickly by running it at about 1500 rpm for a few minutes with the accelerator pedal lightly depressed.

Check the coolant reservoir. If it is dry, add coolant to the reservoir while the engine is running. Fill it about half full. CAUTION:Do not attempt to remove the radiator cap when the radiator are hot. Serious injury could result from scalding hot fluid and steam blown out under pressure.

After the engine coolant temperature has cooled to normal, again check the coolant level in the reservoir. If necessary, bring it up to half full again. Serious coolant loos indicates a leak in the system. You should have it checked as soon as possible at your mechanic's workshop.

Good luck.

on Nov 08, 2010 | Toyota Pickup Cars & Trucks

2 Answers

I have a 96 Jetta GL and I just replaced the thermostat in it because I have no hot air coming out of the vents and now my car is running hot. What is the problem and how could I fix it?


AS FAR AS THE OVERHEAT ISSUE BLEED THE AIR OUT OF THE COOLING SYSTEM. FOR THE NO HEAT CHECK OPERATION OF TEMP BLEND DOOR AND FOR CLOGGED HEATER CORE

Dec 18, 2014 | Cars & Trucks

1 Answer

How to burp a raditor in a 2005 chev silverado 5.3 1500


Remove the cap from the reservoir. Fill the reservoir to the proper level. Start the vehicle and let idle until full warmed up. Keep an eye on the coolant level in the reservoir during this time and top off as necessary. Once the vehicle is fully warmed up snap the throttle a couple of times. Add more coolant if necessary.

Turn the heat on to full heat and set the blower speed to high. Make sure there is sufficient heat from the vents. If not continue snapping throttle until the temp is hot.

Put the cap back on the reservoir. Your done.

Sep 27, 2014 | Cars & Trucks

1 Answer

2001 Chevy Lumina. Got hot, pulled over. Reservoir was boiling over but radiator cap was cool to the touch. Let it cool off. Check water in radiator and reservoir, needed very little. Started driving and...


Sounds like your thermostat is sticking closed at times, not allowing coolant to circulate through the radiator for proper cooling. Replace thermostat.

Mar 01, 2013 | 2001 Chevrolet Lumina

2 Answers

Air pockets in radiator


Air can be purged. While your engine is cool remove radiator and reservoir caps. Place funnel in radiator. Turn heat to the highest position and start vehicle. Add coolant to radiator as needed while vehicle warms up. You should see bubbles coming out of radiator. Fill reservoir to between cold and hot fill lines. Replace caps when bubbling stops but before coolant temperature reaches normal operating temperature. Never remove the radiator cap until engine has fully cooled down.

Jan 15, 2013 | 2008 Nissan Frontier

1 Answer

I have a 2003 VW Passat 1.8T. When I first start and drive the car, the coolant temp is normal. After a few miles, it will suddenly climb to the red, and STOP check coolant comes on. If I loosen the cap to...


Has coolant level been going down in return reservoir at all, as in have you had to add coolant recently to bring it up to top level? Have you tried running engine from cold, with heater on and let it run up to normal temperature with cap off return reservoir? If not do so, and watch level in reservoir and if it goes down, add as needed until engine running at normal, and not overheating. Allow rad fan to kick on & off a few times before re-installing cap on reservoir. Pay close attention to engine temp while doing this. If it goes high, shut it off and let cool. Be careful, my son's Passat just had overheat problem and turned out to be impeller on water pump ( internally) was spinning on shaft of pump. Thermostat is certainly a consideration if coolant is full, and all air bled out. Keep me posted on what happens when you run with cap off and keep reservoir full. Don't forget, heater on while doing this.

Dec 05, 2012 | Cars & Trucks

1 Answer

Does the 1997 honda civic have an air lock preventor Every morning I have to throw the built up coolant back into the radiator from the auxiliary container. When I open the radiator, the air belches...


The only thing I can think of that would cause this is if the antifreeze is old or weak or diluted down with too much water. Try the following:prev.gif next.gif DRAIN & REFILL Fig. 1: Remove and drain the reservoir recovery tank 91161p06.gif
Fig. 2: Location of the radiator draincock 91163p27.gif
Fig. 3: Use your hand to unscrew the plastic draincock 91163p28.gif
Fig. 4: To refill the recovery tank, twist the cap . . . 91161p09.gif
Fig. 5: . . . then pull up to remove it from the tank 91161p10.gif
Fig. 6: Adding coolant to the reservoir bottle 91161p30.gif
Fig. 7: Always check the condition of the radiator cap gasket and seal. Place a light coating of coolant on the seal and gasket when installing tccs1079.gif
CAUTION
When draining the coolant, keep in mind that small animals and domestic pets are attracted by ethylene glycol antifreeze and may attempt to drink any that is left in an uncovered container or from puddles on the ground. This can be fatal if ingested in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused until it becomes contaminated or several years old. To avoid injuries from scalding fluid and steam, DO NOT remove the radiator cap while the engine is running or if the engine or radiator is still hot.
  1. Before draining the cooling system, place the heater's temperature selector to the full WARM position while the engine is running.
  2. Turn the engine off before it gets hot and the system builds pressure.
  3. Make sure the engine is still cool and the vehicle is parked on a level surface.
  4. Remove and drain the reservoir recovery tank.
  5. Place a fluid catch pan under the radiator. Turn the radiator draincock counterclockwise to open, then allow the coolant to drain.
  6. Remove the radiator cap by performing the following:
    1. Slowly rotate the cap counterclockwise to the detent.
    2. If any residual pressure is present, WAIT until the hissing stops.
    3. After the hissing noise has ceased, press down on the cap and continue rotating it counterclockwise to remove it.
  7. Allow the coolant to drain completely from the vehicle.
  8. Close the radiator draincock. NOTE: When filling the cooling system, be careful not to spill any coolant on the drive belts or alternator. To refill:
  9. Make sure the heater temperature is placed in the full hot position.
  10. Open the bleed screw on the thermostat housing.
  11. Install the reservoir recovery tank and using a 50/50 mixture of the recommended antifreeze and clean water, fill the cooling system reservoir tank to the FULL mark. WARNING
    If any coolant is spilled on a painted surface, wipe it up immediately.
  12. Begin filling the radiator with the 50/50 mixture of coolant. Watch for air being released from the open the bleed screw on the thermostat housing. Once coolant mixture begins to steadily flow through the bleeder, close the bleeder.
  13. Continue to fill the radiator until the radiator is full.
  14. Start the engine and allow the engine to run until the cooling fans operate two times, making sure to top off the system as the fluid level drops.
  15. After the cooling fan has run for the second time, top off the system as necessary, then install the radiator cap.
  16. Allow the engine to run and inspect the cooling system for leaks.
prev.gif next.gif

Jan 25, 2011 | 1997 Honda Civic

1 Answer

Sometimes car will get hot. radiator will b dry. other times its fine


Check ur radiator cap! Mostly when the engines become hot, coolant goes thru the coolant reservoir and comes back to the radiator when it cools down. Damage radiator caplet the coolant goes thru the reservoir but can't siphon back the coolant to radiator , thus always overflows the reservoir and the radiator dries out from its coolant! Check also if there is LEAKS in the bypass hoses and CAP PLUGS! Hope that might help u out!

Nov 16, 2010 | 1998 Honda Civic

1 Answer

Pontiac Aztek running hot


You may want to do a inspection of your cooling system, here's a list that might help,
  • Check the thermostat, if it's defective replace it.
  • Check the coolant in the reservoir tank, it should be at the proper full level.
  • Sometimes when you change a thermostat there's a possibility you could get air in your coolant lines from having the coolant system opened up, this could keep your coolant from circulating through your system, if so you will need to bleed the air out of the coolant system.
  • The water pump should be inspected for leaking coolant out of the weep hole's, when a water pump go'es bad it may leak coolant, which would mean the seals on the pump are bad, also listen for squealing noise's coming from the pump when the car is started, if it squeals the bearings are bad, there is also a possibility the water pump fins are wore down from corrosion, there is no way to inspect this without removing the pump.
  • check the drive-belt for wear and tension, a bad tensioner or a bad drive-belt could have an effect on the operation of the water pump.
  • check the pressure cap on the coolant reservoir tank for good pressure, when you remove the cap you should hear a hissing sound this means you have good pressure in your cooling system, check for corrosion or build up on the cap, clean the cap if necessary, also check the coolant in the reservoir tank, it should be clean, if not you might need to have the cooling system flushed, during the flush you can observe if the coolant has a good flow through the system.
  • check the large upper and lower radiator hose's for crack's, swelling, and proper coolant flow.
  • Check the operation of the cooling Fan, and circuit, cooling fans use relays and fuses, some vehicles use more than one cooling fan, if your vehicle has two cooling fans there should be two relays and two fuses one for each fan, first visually inspect the fuses if one or both are bad replace them, you can test the relay or relays for continuity by removing them and doing a proper continuity test according to your relays circuit diagram.
  • Check the coolant temperature sensor, most coolant temperature sensors are located directly in the thermostat housing, this sends information to your pcm which determines when to turn your cooling fan on and off, if it's defective replace it.
  • Inspect the radiator grill for damage or debris build up.

Apr 18, 2009 | 2005 Pontiac Aztek

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