Question about 2003 Nissan Sentra

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I've no heat in my car, i changed thermostat, rad cap, and radiator, flush and bleed the system still no heat, but no it becomes worst i've engine overheat and the fun start working even with -30 out side.

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Sounds like the temp control actuator

Posted on Feb 01, 2010

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I have a 02 Grand caravan that has new radiator, termostat, one new fan. the temp gauge goes up to max hot the drops right back down in seconds. what could be the problem?


it could be you have an air lock in the cooling system
remove the rad cap from the rad, start the engine and let it run until the coolant drops (add to fill it back up) or until the coolant boils out of the rad spout.

maybe pull the heat sensor. -replace it OR clean it off, reinstall it.

Mar 12, 2015 | 2002 Dodge Grand Caravan

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1999 Dodge 1500, After driving 30 miles the heat is barely warm. Heater core hot both inlet and outlet and the bottom of the heater core is hot, top rad hose warm, bottom rad hose cold, Radiator cap u


sound like the impelled in your water pump may have failed. Or your system is air bound. Try to open the rad cap when its cold and let it run and see if air bubbles come to the top

Oct 04, 2014 | Dodge Ram 1500 Cars & Trucks

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Over heating


How did you check thermostat? Did you check coolant level. Is the auxiliary water pump leakinh

Jun 14, 2014 | 2000 Dodge Durango

3 Answers

Changed the water pump and now it over heats


Many people overlook the cooling system pressure cap cheap to replace but often overlooked , the radiator may also be internally restricted. Rad shop would be able to confirm if this is the case. rad cleanout and engine block flush may help. Hopefully this is useful to you.

Apr 11, 2014 | 2003 Ford Escape

2 Answers

My 2002 buick century overheats and has no heat


Possible trapped in system. Bleed system, should have two small screw bleeders, one in front of left valve cover on pipe behind water pump and the other on coolant pipe outlet as you follow upper rad. hose towards engine. Engine cool, remove rad cap, open both bleed screws and fill rad until coolant flows free out both bleed ports. close both bleed screws, rad cap off, start engine and let idle until upper hose is hot to touch , shut off, let it cool down for 20 minutes, top up rad and install cap. restart car ,drive and check.

Jan 02, 2014 | 2002 Buick Century

2 Answers

2000 chevy corvette changed water pump and therm bubbling through rad cap


there should be no air in the cooling system and the system can be bled by using a pressurising equipment . Ensure that the thermostat is placed in the motor the right way with the body facing the hot water (head or block). Air defeats the purpose of having a pressurised cap and system.

Jan 01, 2014 | 1998 Dodge Ram 3500 2WD

4 Answers

Over heating, replaced thermostat, still over heats, i have a 2004 dodge stratus, 2.4L DHOC


After changing the thermostat, did you fill it with 50/50 antifreeze to water?

Is the radiator cap (not actually on the radiator) in good shape and seating properly?

If the answer is yes to all of the this, than I would try picking up some heavy duty flush from the local parts store and flush the system really well.

Hope this helps.

Feb 05, 2011 | 2004 Dodge Stratus

1 Answer

I have a 2000 chryler concorde with no heat. I changed the thermostat.I 've checked the coolant. The blower is working but only cold air. Any solutions


if you have changed the thermostat. did you bleed air out of system, if air is trapped in system it will not heat right! drain radiator and flush it good, but when refilling turn heater on high heat. then bleed air out when refilling system. most all cars have a bleeder for air. if in doubt, call any auto parts store to find out where yours is. if air is in system you will see bubbles appear from bleeder. also when flushing engine, make sure you start vehicle so it circulates through engine as well as refilling system. if the upper radiator hose gets hot then check for heat from car if it is ok! close bleeder and make sure radiator is full. I think the biggest culprit is air trapped in system. before starting the flush, be sure its not caused by low coolant in radiator. have a good day!!

Nov 05, 2010 | 2000 Chrysler Concorde

2 Answers

2002 pt cruiser overheating was told i need a new raditor and thermostat for 1 grand sounds fishy


Flush rad & change coolant & thermostat. Check operation of rad fan, & make sure it is coming on when engine reaches normal operating temperature. Be sure to bleed air out good when refilling rad/cooling system. Start engine & turn heater on when refilling & let rad fan come on & off at least 2 or 3 times before putting cap back on rad, and refill rad as needed as you do this. then fill return bottle to proper level & see what happens.

Jun 27, 2009 | 2002 Chrysler PT Cruiser

1 Answer

No heat on a 1994 4 cyl. Dodge Caravan


Pretty common on those. I used CLR and disconnected my heater hoses & with a small pump, I ran CLR only, through the heater core, and let it sit in there overnight, flushed it through again next day, back flush as well. re-connect hoses, run engine with heater on, and rad cap off until the rad fan comes on 2 or 3 times, then put cap back on, to bleed air out of system. Cleaned it out enough to get the heat flowing again. If you changed thermostat and didn't let it run with heat on, and rad cap off for a while as described above, then do that first, just to make sure you haven't just got an air lock in the system.

Dec 19, 2008 | 1994 Dodge Grand Caravan

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