Question about 1999 Honda Accord

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AFTER CHANGING RADIATOR MY AIR CONDITION SYSTEM DOESN'T TURN ON.ELECTRIC DIAGRAM I DON'T HAVE, SO I AM BEGGIN YOU TO SEND ME ONE!

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You may have snapped the a/c compressor lines that run into the transmission radiator( they are aluminum and very maliable). more information wouold really help for a more detailed answer.

Posted on Aug 20, 2010

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What could cause my 93 Chevy Cavalier to overheat? I just put in a new water pump and a new thermostat but it still tends to overheat and now has a leak from the thermostat intake hose.


We need rule out a few basic things to properly diagnose the overheating problems.
Step 1:Do you think?there is enough antifreeze in the radiator? Don t just look inside the plastic overflow bottle only, you should remove the radiator cap and then look inside the radiator.We should see the fluid level whether it is at its proper level or not. Most cars and trucks will hold a mixture of coolant and water .You should have the cooling system pressure tested for a leak if you have to add more than a pint of fluid .If we see any obvious fluid loss in the engine compartment or on the ground , we should also have the system tested.
Step 2:If you don not see any coolant leak or low fluid level , then you should determine when the overheating problems occurred.If the engine overheats only at a stop or idle ,Most front wheel drive cars will use an electric cooling fan motor located in front or behind the radiator. The existence of function of the cooling fan is to improve airflow across the radiator at stops and low speeds.The fan is controlled by sensors,it regulates the engine temperature and additional load that might be placed on the engine.The cooling fan is required by the air conditioning compressor to operate at idle when the compressor is on.It is a quick way to check the cooling fan operation to turn on the air conditioner.
Also the cooling fan should come on with the air conditioner compressor. Some automobiles will have two electric fans, one is the air conditioner condenser fan and the other is for the radiator .It will have a belt driven fan blade and fan clutch if your vehicle does not have an electric cooling fan on the radiator . This fan should be pulling a large amount of warm and hot air across the radiator onto the engine to keep it cool.The radiator fan is usually closer to the middle of the radiator. The radiator fan is responsible for cooling of the engine, while the condenser fan is responsible for increasing air conditioning efficiency at idle and low speed.If there is ample airflow across the radiator at idle. The radiator is responsible for the primary heat exchange for the engine, and airflow is crucial at this time.
Step 3:Again, we have ample airflow across the radiator, so we must inspect the proper antifreeze circulation.If there is a restriction in the system , it will produce the same affect.Water calcification can accumulate in the radiator and then drastically reduce the flow of coolant at a very high speed. Removing the radiator from the vehicle are the only two real cures for a clogged radiator.It be a waste of time and money trying to correct a restricted radiator when you use a can of radiator flush additive. Of course there are more technical issues that could produce an overheating problems, but the check list described above will identify the most common.Anything you can do to help the mechanic to deal with the problem will probably result in less diagnostic charges, and it might help insure a proper diagnosis of the problem at once of your 1993 Chevrolet Cavalier.
Step 4:You must inspect an electric motor cooling fan ,it will start with ignition key switch off, it has failed and needs to be replaced if the 1993 Chevrolet Cavalier fan motor does not spin freely . The electrical system operates the fan needs to be tested,If the fan motor "freewheels" that . Start the engine and then turn the air conditioner to the coolest setting, if your automobile does not have an air conditioner skip this step.The car air conditioner will operate the 1993 Chevrolet Cavalier cooling fan should activate within five minutes , the fan motor fuse must be checked first and the fuse condition is good the remainder of the electrical system must be checked.
Step 5:A wiring schematic is needed to further troubleshoot this problem ,which is located in a repair service manual. You may use the wiring schematic to trace the circuit through the fuse and relay components, if everything of 1993 Chevrolet Cavalier tests fine, the fan motor has failed and needs to be replaced. The most common repair is the cooling fan motor failure.
This isn't only theory. You can take these steps into practice.You can deal with the 1993 Chevrolet Cavalier overheating problems yourself.

Jul 18, 2016 | Cars & Trucks

1 Answer

Can I get a diagram of how to remove the heater core


In order to remove most heater cores involves discharging the air conditioning system, draining the radiator fluid , disconnect blower motor, disconnect the air-conditioning lines, special tools are needed for most models. Remove PCM ( COMPUTER ) LABEL AND DISCONNECT electrical connectors, disconnect vacuum hoses. Hope this helps, but really should be done by qualified mechanic.

Dec 18, 2015 | Cars & Trucks

1 Answer

99 ford mustang 6 cylinder. Recently i had to add antifreeze to my car couldn't find the radiator drain to take some of the water out so i loosened the lower coolant hose to drain some out after...


replace any soft hoses.
collapsed hoses cause water flow constriction
.that increases temp fast

to bleed air out of the system . if no air bleeder as such
with heater on full .-engine running
loosen the bypass pipe for the closed thermostat till only coolant flows no air bubbles
check if
the engine cooling fan spinning fast enough
the water pump in good condition
the interior directional flaps motors or actuators working

Apr 01, 2017 | 1999 Ford Mustang Cobra

1 Answer

Replaced thermastat but still overheating


OK, you have addressed the first possibility. There are a few more, each progressively more expensive to fix. First, are the radiator electric cooling fans operating? If you find the vehicle runs ok on the highway, but overheats around town in stop-and-go traffic, it could be that the fans are not running. Quick check for the fans - with the ignition on (the engine doesn't need to be running), move the cooling control to the A/C position. If the fans come on, they are good, but you could still have a fan-related cooling problem. If the fans don't work, you have a problem. If the fans worked, the car runs fine at highway speed but not in town, then suspect the coolant sensor that engages the fans. If the fans work and the car overheats in all conditions, then a system blockage is possible. Blockages occur usually one of two ways: Radiator rust/corrosion, and collapsed radiator hoses. Radiator corrosion will require radiator replacement; if it is blocked badly enough to overheat, flushing it is a waste of effort, and could cause more problems with all the **** you circulate into the engine. If the system is low on water (air in system) it can rise to the top radiator hose and cause it to collapse partially or fully, restricting flow. Some engines have water jackets that extend higher than the radiator cap, so they can trap air. These cars have bleeder ports at these locations to remove to trapped air. Check to see if that is the problem.

Dec 17, 2011 | 2001 Chevrolet Lumina

2 Answers

2002 Mini Cooper overheating when idling with the airconditioning on. Initially the air is cold and as the car engine temperature heats up the air conditioning gets warmer. Also, the radiator overflow cap...


Most cars have an 2 electric fans on the radiator. One will run when the coolant gets hot and the other will run when there is more cooling demand OR it will run when the AC is turned on. My guess is, the second fan is not running when your AC is. Your AC system creates heat of its own. The heat is removed through the condenser (radiator-like coil) which is usually located in front of your engine radiator. Without a fan the heat is transferred into your engine radiator causing it to over heat. This would explain why it overheats while idlling and not while driving. While driving, air is flowing through the radiator and condenser. to provide the necessary cooling. In short, check to see if both fans are running when the engine is hot and the AC is turned on.

Sep 02, 2011 | 2003 Mini Cooper

1 Answer

Cooling fan burned up


Get a new fan motor and blade from GM or from an aftermarket supplier.

GM parts are usually better than the aftermarket ones, though for fit and functioin.

May also look into checking the relays and harness. If the terminals of the fan show they are getting current, then the motor will have to be replaced if not turning or obviously burnt.

Good luck on this repair.
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Inspect/Replace

CAUTION
The fan that draws cool air across the radiator can be driven by either a belt or electricity. Rotating fans can be dangerous. Some are controlled by an automatic switch and can start unexpectedly. When working on electric fans, keep in mind that electric cooling fans should be disconnected when working around them.
When replacing a radiator fan motor, always refer to the vehicle's service manual. The following is a general guide for cooling fan replacement.

  • Disconnect the negative battery terminal at the battery. This is necessary on vehicles using electric fans, but some vehicles may require the relocation of the charging system components.
  • Drain the cooling system.
  • Loosen or remove the hose clamps, then remove the upper and lower hoses from the radiator.
  • Disconnect the transmission cooling lines and plug them off, if equipped.
  • Disconnect the electric fan motor connector, if equipped.
  • Remove the fasteners attaching the fan module to the radiator.
  • On some vehicles equipped with air conditioning systems, it may be necessary to discharge the system. This is the case if the radiator and condenser can not be separated in the vehicle.
  • Remove the upper radiator cross member or mounts.
  • Disconnect and plug the air conditioning lines at the condenser, if needed.
  • Remove the radiator and fan module as one unit if possible.
  • Separate the fan module from the radiator.
  • If required, separate the radiator from the condenser.
  • Remove the old fan module.
  • Install the new fan module onto the radiator.
  • Reattach the fasteners attaching the fan module to the radiator.
  • If equipped, connect the electric fan motor connector.
  • Reinstall the radiator.
  • Refill the cooling system.

Oct 29, 2010 | 1997 Chevrolet Cavalier

2 Answers

Not sure what the actual name of the fan is, but its the electric fan that blows the radiator. Changed the relay and hooked direct 12 volts to it and it works. Something has stopped sending power to...


If the coolant level is low,or there is air in the cooling system,the sensor will not send a signal to turn the cooling fans on,if the cooling system is full,and no air present,then change the coolant temp sensor,not the sending unit for the light,or gauge,

May 30, 2010 | Dodge Durango Cars & Trucks

1 Answer

The engine over heat unless air conditioning is on


from memory the electric fan runs constant when air conditioning is turned on i would suggest the thermal control for the electric fan monted to the radiator is not functioning correctly is normally mounted to a flat spot on radiator

Dec 10, 2009 | 2000 Pontiac Grand Am GT

1 Answer

Temperature goes up when air conditioning is turned on


your car has two electric cooling fans one is specifically for the added heat load the A/c puts on the system. . This fan isn't turning on...check your fuses and the fan relays

Apr 04, 2009 | 1999 Honda CR-V

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