Question about 1994 Pontiac Sunbird

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Heater fan and rad fan are not operating both have been replaced no voltage to either

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Replace fuses and relays

Posted on May 12, 2009

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Car overheated, we filled all fluids, replaced wires and plugs and acabin filter..now there is no heat


Did you re-fill radiator when engine cool, rad cap off and heater turned on? If not, do it with heater turned on and allow engine to get up to operating temperature and rad fan comes on once or twice, indicating coolant returning to rad for cooling . Keep an eye on coolant level and top up as required, then after fan has come on and off a couple of times, put your rad cap on properly and top up coolant return bottle to proper level. This should bleed out the air and get heater working properly again.

Feb 22, 2011 | 2001 Daewoo Nubira

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1996 Legacy Overheating It has coolant and both fans are working. Overheats after about 10 min of driving. Checked oil was a little low put 1 liter in. Radiator has pressure, opened when hot and coolant...


Costs nothing to try this, just in case coolant level was low when or after bottle changed, and you got an airlock. Start car when cold, rad cap off and heater on. Now let in run until it comes up to normal operating temperatures and rad fan(s) kick on and off, 2 or 3 times, and add coolant to proper level in rad if it goes down during process. Then after that, put rad cap back on, fill coolant return bottle to proper level and try it. Quite often when re-filling an engine cooling system, people forget to turn on heater to get coolant circulating through the heater core.

Nov 06, 2010 | 1996 Subaru Legacy

2 Answers

Changed thermostat and added coolant but 1997


could be waterpump?
i was going to say rad fan,but if so heater would be hot.
lack of coolant will make heater core to blow cold,if engine heats up with full coolant,usually means poor or no circulation.
water pump?
run engine with full coolant,at operating temp.with rad cap off and look in rad cap hole and see if there is movement of water inside rad.
[rad fan will not come on if water is not circulating through rad water pump?]

Dec 20, 2009 | 1997 Chrysler Cirrus

2 Answers

New heatercore but no heat flushed system out but still no heat the dash gets hot but very little heat comes out when on for awhile the fan works just blows cold air


Did you run engine from cold, with heater on when you refilled the system? Try again, rad cap off, with heater on, and let engine get up to operating temperature, make sure you have good flow through rad ,leave cap off, until rad fan comes on to cool returning coolant to rad at least twice. Give engine a little extra rev, for 5 seconds or so, every once in a while to make sure flow getting through heater core, and add coolant as necessary. See if that helps, as it may just be an airlock in system. If your cooling system has any bleed screws incorporated, crack them once in a while as well.

Nov 05, 2009 | 2000 Oldsmobile Bravada

2 Answers

2001 mitsubishi over heating i have replaced the radiator,thermostat and car still heats up unless i turn on the heater so the fans will run , should the fans be on at all times what else should i check.


Did you make sure to have heater (not defrost) running while you refilled cooling system after repairs ? If not, try refilling with cap off rad, and heater on, and allow coolant to get to operating temperature, where cooling fan at rad should come on. I usually allow fan to come on at least 2-3 times before I put rad cap back on, to insure all air is out of the system. If rad fan doesn't come on when it should, you may have found your problem. If still heats up after that, get back to us and we'll assist further on diagnosing problem. Let us/me know how you make out.

Oct 20, 2009 | Mitsubishi Galant Cars & Trucks

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

2 Answers

2002 Dodge Intrepid Radiator Fans Not Working


CHECK YOUR SPEED FAN RELAY ONE SIDE IS FOR YOUR AIR CONDITIONING YOU HAVE HI AND LOW RELAYS

May 23, 2009 | 2002 Dodge Intrepid

3 Answers

Overheating and no hot air from heater.


Leave rad cap off when starting from cold, turn heater(not defrost) on, and top up coolant in rad as you go, to about an inch or 2 from top of rad. Let engine run with cap off until your rad fan comes on & off 3 or 4 times. Every once in a while, rev engine slightly for 5-10 seconds to help bleed air out faster. After about 3 or 4th time fan comes on, you should be o.k. to put cap back on all the way & fill bottle to proper level. Heat should be there now. Give it a try & let me know how it goes.

Mar 29, 2009 | 1998 Ford Contour

1 Answer

I get all cold air / no heat when using defrost and all heaters


It is possible that you may have an air lock in the system. You need to drain the rad again and remove the upper most heater hose from the heater core and raise the hose up high . Fill the rad until coolant comes out of the heater core pipe. Carefully reattach the heater hose. Fill the rad slowly allowing trapped air to escape.This may take a while. Once the rad is full put a catch basin on the floor under the rad filler neck.Start the car and let it run to operating temperature.Allow the expanding coolant fall into the basin.Once you see circulation in the rad you can slowly top the rad off.once you do this replace the rad cap and fill the reservoir bottle 3/4 ways to the top. Shut the car off and let it cool off filling the bottle as necessary.Hopefully this will cure your problem. Good luck :-)


Dec 13, 2008 | 1994 GMC Sierra

2 Answers

99 DODGE STRATUS RADIATOR OVERFLOW BOTTLE


Sounds to me you either needs a theromstat or water pump. Its one of the two.

Jul 31, 2008 | 1999 Dodge Stratus

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