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Brian Posted on Dec 02, 2017
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Dimming headlights and reduced power to air conditioner

As we are driving, the headlights and air conditioning will suddenly decline in power quite significantly...the headlights dim and the air conditioner sounds like the fan was turned down. This lasts for about 5 seconds and then happens again and again every few minutes. The car has 66k miles. Could it be the timing belt?

1 Answer

Bill Boyd

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  • Hyundai Master 53,816 Answers
  • Posted on Dec 02, 2017
Bill Boyd
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Joined: Jan 04, 2013
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No
but could be the alternator drive belt slipping or about ready to break off

5 Related Answers

Anonymous

  • 87 Answers
  • Posted on Jun 09, 2008

SOURCE: 1994 Hyundai Excel Air conditioning RADIATOR´S FAN works always very fast

this not really a problem as the fan speed is controlled by the high preasure switch in the ac system the hotter it is outside the higher the preassure will be in the system as hot as its been the preasure is high already when the compressor cycles it pulls suction on one side and outputs high preasure on the other the fans cool the condenser the higher the ambient temp the faster they go so all is fine...

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Anonymous

  • Posted on Sep 06, 2008

SOURCE: cranks but wont turn over

you know. i took it to a mechanic and actually.... The timing belt cut the Crank Shaft Censor... So it was the crank shaft censor again. The wires were routed wrong from the first mechanic that "fixed" the car.

Anonymous

  • 6966 Answers
  • Posted on Dec 29, 2008

SOURCE: 2002 Hyundai Accent lost power

Hi and welcome to FixYa,

Offhand, definitely an electrical issue. Some ideas to check, consider and/or explore:

  • IGN switch - check for loose, corroded or heating connections. To test, under normal usage of the vehicle, should feel warm but not overly hot. If so, then possibly loose connection;
  • fuse/relay box - check for loose, corroded or burned terminals, holders, clips and connectors/pins. Use an electrical contact cleaner and spray. It may also be necessary to scrape to remove burnt marks/corrosion;
  • fusible link - the battery would have 2 wires connected to the + terminal. The big wire goes to the starter, the smaller of the two is the electrical systems main wire. This normally goes to the fuse/relay box. Check for frayed ends, loose connection, corroded terminals. In some instances instead of being at the battery's + terminal, it is connected to the end of the big cable down at the starter motor.
  • ALL connectors with big wires - these carry the main +12 either as always ON, ACC or IGN. If a connector has a wire bigger than the others, check them. It may be necessary to disconnect to enable you access to the inside pins/terminals. Scrape them clean.
Good luck and Thank you for using FixYa.

Anonymous

  • 57 Answers
  • Posted on Apr 17, 2009

SOURCE: need instructions on removing hyundai santa fe 01 fan belt ac

its your serpentine belt (thats what its called) and you will need a 3/8 ratchet and then find the belt tensioner. The tensioner has a spot where you need to put the ratchet into and pull or push depending on whatever way and that will releive the pressure off the belt so you can take it off.

robert wales

  • 4977 Answers
  • Posted on Feb 08, 2012

SOURCE: why does the power steering pump drive belt squeel under load when its cold on 2004 hyundai elantra.

this sounds like the belt is worn and needs replacing.when its damp and cold if the belt is worn it will slip easier under this condition than in warmer weather.also the belt tension may not be proper.if this has a belt adjuster that you can adjust then the tension may need to be tightened.if it has an automatic belt tensioner(one that adjust tension all the time)like a serpintine belt then the tensioner may need to be replaced as the spring that crates the tension do get weak over time.

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Related Questions:

2helpful
1answer

1998 Camry 4 cylinder,has lost engine power.new plugs,new wires, new air filter.Before this sometimes while stopped it would almost die.Headlights dim,power windows not working,a/c blowing low.

head lights dimming is the clue
that indicates low current from the alternator and mthat will produce all of your problems
check belt condition and tension .Have an accredited auto electrician check the complete charge circuit and have him do a load test on the battery
tip

Save cost with some precautions

Precautions to be taken in air conditioners and to save cost.

These are some useful precautions to be taken in air conditioners (A/C).Improper refrigerant charge can damage your compressor, which is the heart of your air conditioning system; this is an expensive air conditioner repair. Systems improperly charged will cause increased electric bills because this will reduce the efficiency of your air conditioning system. The proper refrigerant charge will provide longer equipment life, lower your utility bills and reduce the need for air conditioning service.
A dirty condenser coil (outside unit) will reduce your air conditioning systems ability to remove and reject heat from your home. This will cause your system to run longer and increase your electric bills. The benefit of a clean condenser coil is proper heat rejection, reduced run time and lower energy bills. A dirty air conditioning condenser can lead to system failure and the need for you air conditioner to be repaired, dirt and house dust that escapes through your air conditioning filter can cling to the cold moist coil. This will restrict the air flow through the coil reducing your air conditioning system of performance and capacity. Maintaining the evaporator coil will ensure that proper air flow is delivered to all areas of your home, increase comfort levels, provide a cleaner healthier indoor environment. Inspecting and changing your air filter on a monthly basis will help prevent air conditioner repairs.
As your air conditioning system removes heat from your home, humidity is extracted from the air. The condensation created by warmer air passing over a cold coil must be drained from your system. This is done through a condensate drain line. The drain must be checked and cleared of algae build up or foreign particles clogging the drain, which could cause water damage to the ceiling or floors of your home. By keeping your air conditioner drain line clear you will reduce the need for air conditioning service and overflow problems which can result in water damage. Proper draining will also aid in maintaining indoor humidity levels.
Cause of air flow
Dirty blower wheels can affect the air flow to your home; limit your air conditioning system's capacity and your comfort. It can also spread dust particles which irritate sinus and allergies. A clean blower wheel and fan motor will provide maximum air flow, improved comfort levels and proper cooling. Most of air conditioner repairs are caused by dirt and the lack of maintenance.
Cause of electrical panel
Your thermostat should be properly calibrated. This will ensure accurate temperature control and operating cycle. This will save you on operating cost and assure your comfort level. Moving parts in need of lubrication can cause increased electrical consumption and air conditioner repairs. This is due to additional power required to overcome the resistance in motors and drive shafts that are not lubricated. Proper system lubrication will offer smooth motor and shaft operation, extended part life and less air conditioner repairs. The electrical components on your air conditioning system should be inspected regularly for signs of wear. Faulty electrical components can lead to very expensive air conditioning repairs. A thorough inspection will reduce the need for air conditioner service if the faulty or worn parts are replaced when found.
Carrying this tips help reduce the amount of air conditioner repairs you will encounter over your air conditioning systems lifespan. If you are in need of air conditioner service make sure the company you choose is licensed and insured to do the required repair work (warranty) .



on Feb 27, 2010 • Heating & Cooling
0helpful
1answer

Car looseing power headlights dimming then quit working at traffic light altenator has been changed

Is your battery in good condition and the connections clean and tight.
0helpful
1answer

1988 s10 fuses have no tail lights

Had a 1988 s10 with the opposite problem. Had taillights but no headlights. Turns out that only part of the headlight switch had gone out. It allowed the tail lights and all other lights to work but not the headlights. replacing the headlight switch fixed the problem. Perhaps the switch on yours has went out just on the opposite side that mine did. That switch operates both head and tail lights. Check for power at the tail lights. If there is no power there, check that all the fuses are good. Replace any you find that are blown. If you still have no power, replace the headlight switch. If there is power at the tail lights, clean or replace the bulb sockets.
1helpful
1answer

Fan for heater/air conditioner quit working suddenly

its the blower motor resistor that is faulty or the blower motor resistor wire connector that has a bad connection.Wiggle the wire connector going to the resistor with the ignition switch and the fan switch in the on position and if the fan comes on then the connection is bad but, if it does'nt come on then the resistor is faulty.
0helpful
1answer

AC was running and suddenly E1 fault appeared on the screen . We switched off the AC power and again powered it on . The fault got ok . But wanted to know the reason why this fault came

Hi,

Here is a tip that gives a further explanation of that E-1 code. The causes of the E-1 code can be varied depending or the brand of your air conditioner.

Read through this tip... it will help you understand what is happening with your window air conditioning unit and give you some things to try to help you get your problem resolved.

E-1 Code on Window Air Conditioning Units

heatman101

1helpful
1answer

How do I know if compressor of my house air conditioner is turning on when I start my air conditioner? When I start my air conditioner the fan outside the house turns on, the air is blowing from the vents...

if the compressor is starting there will be a very small dimming in the house lights,if you go outside to the unit and start it from the outside disconnect when the compressor starts you will hear a whine type noise coming from the outside condenser unit that is the hermetic compressor motor operating,no cold air can be a number of issues,low on refrigerant(not likely on the new sealed systems) a bad motor start/run capacitor(quite likely) a bad contactor on the outside unit that supplies power to the compressor,one leg of the 240volts that supplies the compressor power,the fan will run on 120 volts,but the compressor needs 240 volts check the fuses.breaker in the power panel
0helpful
1answer

It just quit running and wont do anything at all.

Hello. Let me try to help you. Since it is not running at all and stopped suddenly, I would first suspect that you lost power to the unir,

Check to see if there is power getting to the air conditioner. If it is a 110-volt unit, plug a lamp or other device into the same outlet the air conditioner is plugged into. If there's no power, check the fuses or circuit breakers. If there's still no power, you will need to contact a qualified electrician to restore power to the outlet.

If there is power to the appliance but it is still completely dead there may be a problem in one or more of the following areas:


  • Wiring (Inspect for any broken or burnt wiring)

  • Thermostat

  • Compressor

  • Overload and/or relay

  • Selector switch

  • Control board

Work on these areas of an appliance may require help from an appliance repair person or other qualified technician.

Get back to me and let me know if the problem has been solved. I really do want to help you.
0helpful
1answer

Air conditioning won't work. Maybe no ground

Open your elctrical panel on your fifth wheel and make sure the wire terminals are tight comming in from the electrical power cord.

There could also be a issue with your power converter. Try turning your circuit breakers off and back on.
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