My Car Heater is not providing much heat / not working. What's wrong?

It could be any of a number of problems. A heater that's working properly should blow air that's about 75 to 100 degrees F. hotter than the outside air. If it doesn't, any of the following might be at fault: 

A low coolant level (often due to a leak or weak radiator cap), but may also be the result of not getting the cooling system completely filled. If you've just recently changed the antifreeze, check the coolant level in the radiator to see if the radiator is full. An air pocket in the heater core or a heater hose may be interfering with the flow of coolant through the heater core. 

One way to tell if the coolant is circulating through the heater core is to feel both heater hoses. Both the inlet and outlet return hoses should feel hot when the engine is at normal operating temperature and the heater is on. 

Refilling some cooling systems can be tricky. Some front-wheel drive and rear-engine applications require special filling procedures to eliminate the air pockets that become trapped in the heater hoses and heater core. To help vent the trapped air, some vehicles have a "bleeder" valve (or more than one valve) on the thermostat housing and/or certain hose connections. Opening the valve(s) allows air to escape as the system is filled. The valve(s) should then be closed when coolant starts to dribble out the valve. On vehicles that lack these special bleeder valves, it may be necessary to temporarily loosen the heater outlet hose so air can bleed out as the system is filled. 

An open thermostat or one that's too cold for the application (most vehicles today require a 190 to 195 degree F. thermostat). One way to tell if the thermostat is stuck open is to start a cold engine and feel the upper radiator hose. You should feel no coolant moving inside the hose until the engine starts to get warm. After several minutes, you should feel a sudden surge of hot coolant when the thermostat opens.   

A defective heater control valve. On most vehicles built since 1970, vacuum operated heater control valves are normally open unless vacuum is applied. This allows coolant to circulate through the heater core even when the heater isn't being used. To test the control valve, apply vacuum with a hand pump. If the valve fails to close, replace it. 

 A plugged heater core. Accumulated crud in the cooling system may plug the core and block the flow of coolant. The only cure here is to replace the heater core. To prevent the problem from reoccurring, the cooling system should be flushed and refilled with a fresh 50/50 mixture of antifreeze and water. Distilled water is best since it contains no minerals). 

An inoperative airflow control or inlet door in the heater ducting or plenum. If the defrosters aren't working either, you've found the problem. Sometimes all that's needed to fix the problem is to reattach or repair a loose cable or vacuum hose. On vacuum-actuated systems, however, the vacuum motor or control switch may be defective and require replacement. 

A defective blower motor. If the blower motor doesn't work (no sound/no air), the motor may be defective. Or, there may be an electrical problem such as a blown fuse, defective power relay, heater switch or resistor, or loose wire. A blown fuse is a symptom not a cause. A fuse blows when a circuit overloads to protect the wiring and other components against damage. If the fuse is blown, therefore, find out why it blew before replacing it. Always use a replacement fuse with the same amp rating as the original. If a new fuse blows as soon as the blower is turned on, there's an electrical short in the heater circuit or motor that should be investigated. If the fuse lasts a while and then blows, the fan motor is probably running hot due to worn brushes and/or bushings and should be replaced.
The motor itself can be checked by using a pair of jumper wires. Connect one wire to ground and the other to a source of battery voltage. If the motor fails to spin, it should be replaced.

A pinched or kinked heater hose. In rare instances, you might even find mis-routed hoses if somebody worked on the cooling system recently. 

A weak water pump (one with badly eroded impeller blades), or one that doesn't turn fast enough because of a slipping drive belt. 

An electric cooling fan that remains on all the time, or a clutch fan that's locked up and overcools the radiator 

You can count on  A & A Complete Auto Repair Houston for all your Diesel & Gasoline car or truck Repair in the Houston metro Area Pasadena Pearland Conroe Deer Park Friendswood Galveston Lake Jackson La Porte League City Missouri City Sugar Land Texas City The Woodlands Angleton Bellaire Clute Dickinson Freeport Galena Park Humble Jacinto City Katy La Marque Richmond Rosenberg South Houston Stafford Alief West University Place. Call us today at 281-564-7782 or visit our shop at 12160 Bissonnet St., Houston, TX 77099 . Your Satisfaction is Our Ultimate Goal.

(original article link:http://autos.yahoo.com/maintain/repairqa/fluids_heat_air_conditioning/ques020_3.html)

The Importance of car maintenance

Your One Stop Shop For All Your Car Needs

There are several car maintenance measures that you have to do to keep your car at its best. It is important to bring your car to A & A Complete Auto Repair Houston Shop / Service Center and have it checked on a regular basis.

Have your engine checked regularly. Remember that the engine is the heart of your car; with a busted engine, your car is useless. Having your engine checked regularly will ensure that it is working properly and it is up to speed. Also, it is important to check your car transmission, otherwise you might be stuck in one of the main highways of  Houston under the heat of the sun.

Checking the brakes should also be part of your basic car maintenance. It is highly suggested that you seek the assistance of a good Auto Mechanic to have your brakes checked. Remember that maintenance of your brakes is important for safety reasons. Low brake fluid levels can cause soft brake pedals.

At the same time, dirty brake pads can cause the brakes to squeak. Having your brakes checked regularly by an Auto Mechanic can prevent these from happening and ultimately reduce the risks of accidents caused by brake malfunction.

In Houston, auto AC is as important as air conditioning in your home. A functioning auto AC provides daily comfort from the heat outside. If your auto AC emits undesirable cooling then it is time to bring your car to 

A & A Complete Auto Repair Houston and have it checked. AC repair can range from a simple cleaning of a dirty condenser to a mechanical procedure.

It is important that you take care of any minor concerns as soon as you recognize them to avoid any serious problems and an expensive car repair procedure in the future.

For a complete list of Services A & A Complete Auto Repair Houston located at 12160 Bissonnet St., Houston, TX 77099. 281-564-8872 , please visit http://www.AACompleteAutoRepair.com

Engine Knock? Low Oil Pressure?

 

 

 

Regular oil changes and maintaining the proper oil level will prolong the life of your engine. If you experience any of issues discussed in this article, bring your vehicle to A & A Complete Auto Repair Houston to have it properly diagnosed. For more information about the services we offer, please visit our website www.AACompleteAutoRepair.com 

 

 

Oil pressure light flickering? Engine knock? Both? Major repair problem or minor annoyance? Either way, you should always quickly investigate the source before it becomes an even bigger problem.

Oil pressure - or more precisely the lack of it - in certain parts of your car's engine can become a major repair nightmare.

 

All engines lose a certain amount of oil pressure over time as normal wear increases bearing clearances. But unusually low oil pressure in an engine, regardless of mileage, is often an indication that something is seriously wrong and requires immediate repairs.

 

That "tappet" noise may be only one sticking lifter but it may also indicate an oil flow problem that will eventually cause damage to at least one valve.

 

A flickering oil light is more difficult to troubleshoot if your engine is not obviously in need of major repair work.

 

Modern engines with hydraulic lifters, tight tolerance bearings and miniature oil filters require conscientious monitoring of oil pressure.

 

Diagnostic Tips

A good place to start your diagnosis of a low pressure condition is at the dipstick. Check the oil to see that it's at the proper level (not low nor overfilled). If low, the engine may be burning or leaking oil. Adding oil may temporarily remedy the low pressure condition, but unless the level is properly maintained, the problem may recur.

 

If the engine is leaking oil, try new gaskets or seals to fix the leak. If the engine is burning oil, the valve guides and seals are most likely worn, but the rings and cylinders might be bad, too. A wet compression test and/or leak down test will tell you if it's the valve guides or rings and cylinders that are worn.

 

The least expensive fix in the case of worn guides is to install new valve guide seals (if possible) without pulling the head.

 

The best fix is to pull the heads and have the guides lined, knurled, replaced or reamed for over sized valve stems. Worn rings and cylinders would call for a complete overhaul.

 

Also note the condition of the oil and make sure it's the correct viscosity for your car and climate.

Heavier viscosities, such as 20W-50, straight 30W or 40W, may help maintain good pressure in hot weather but are too thick for cold weather driving and may cause start-up lubrication problems - especially in overhead cam engines.

 

Light viscosities, on the other hand, such as straight 10W or 5W-20, may improve cold weather starting and lubrication but may be too thin in hot weather driving to maintain good pressure.

That's why most car and OE parts manufacturers recommend 5W-30 in modern engines for year-round driving.

 

If the level is okay, the next thing to check would probably be the pressure sending unit. Disconnect the unit and check the warning lamp or gauge reading.

 

If the warning light remains on with the sending unit disconnected, there's probably a short to ground in the warning lamp circuit. Likewise, if there's no change in a gauge reading, the problem is in the instrumentation, not the engine.

 

Bad sending units are quite common, so many mechanics replace the unit without checking anything else to see if that cures the problem. This approach might save time, but it's risky because unless you measure pressure directly with a gauge attached to the engine, you have no way of knowing if pressure is within specifications or not.

 

Most warning lamps won't come on until pressure is dangerously low (less than four or five pounds). So don't assume the absence of a warning lamp means pressure is okay, especially if the engine is making any valve or bearing noise.

 

If a check of pressure reveals unusually low readings, check the filter. It's possible the filter might be plugged with gunk. Replace the filter and see if that makes a difference.

 

The next step is to drop the oil pan and check the oil pump pickup screen. If the screen is clogged with debris, you've found the problem. Also, check to see that the pickup tube is properly mounted and positioned, is firmly attached to the pump (no leaks) and is not obstructed.

 

If the pump is mounted inside the crankcase, the next step might be to remove and inspect the pump. Open the pump cover and measure clearances. Also, check for scoring or other damage. A broken pump drive would tell you something entered and jammed the pump. If the pump is worn or damaged, replacement is your only option.

 

If the pump appears to be okay, the next step is to measure the rod and main bearing clearances. Check the clearances on the main bearing closest to the pump (this has the greatest effect on pressure) and clearances on the furthest rod bearing (this will show the greatest wear).

 

If the bearings are worn, they need to be replaced. But before you do so, carefully inspect and measure the crankshaft journals to check for wear, scoring, out-of-round and taper. If the journals need attention, the crank will also have to be reground or replaced.

 

Other diagnostic checks might include camshaft end play and/or pulling a valve cover or the intake manifold to check the cam bearings and lifters.

 

Remember, excessive clearances or leaks anywhere in the engine's oil supply system can contribute to low pressure.

 

Once you've identified and repaired discovered problems, your final check is to start the engine and make sure pressure is within your car's specifications. Use a mechanical pressure gauge and don't rely on the dash gauge or the warning light to verify that the repairs you've made have eliminated your problem.

One Final Warning

If you insist on driving blind and deaf to the obvious warnings coming from under your car's hood, the next sound you hear may be a rapping or knock noise from the rod bearings - which will eventually be followed by dead silence as your engine seizes and your car coasts to a dead stop.

 

 

You can count on  A & A Complete Auto Repair Houston for all your Diesel & Gasoline car or truck Repair in the Houston metro Area Pasadena Pearland Conroe Deer Park Friendswood Galveston Lake Jackson La Porte League City Missouri City Sugar Land Texas City The Woodlands Angleton Bellaire Clute Dickinson Freeport Galena Park Humble Jacinto City Katy La Marque Richmond Rosenberg South Houston Stafford Alief  West University Place. Call us today at 281-564-7782 or visit our shop at 12160 Bissonnet St., Houston, TX 77099 . Your Satisfaction is Our Ultimate Goal.  The original source of this article is: www.autohausaz.com

Starting and Charging Components in your vehicle

Having a good functioning starting and charging system is very important in making sure you are not left stranded anywhere. A & A Complete Auto Repair Houston and its experienced and knowledgeable Techs will provide you with a FREE starting and charging system check anytime. Just take a few minutes and review the information below provided by your friends at A & A Complete Auto Repair Houston, Your One Stop Shop For All Your Car Needs.

Battery:
Operation: The battery has four main functions. It supplies the energy to operate accessories when the engine is not running, it supplies the energy to crank the engine, it provides additional energy when electrical demands exceed the abilities of the charging system, and it acts as a voltage stabilizer absorbing voltage fluctuations in the system. Advice: Corroded, dirty, or loose battery terminal connections can cause problems in the charging system. If a bad battery is suspected, remove the battery from the vehicle, clean the terminal posts, top off the electrolyte levels if accessible, fully charge the battery and then load test it.


Voltage Regulator:
Operation: The voltage regulator controls alternator output by opening and closing the field circuit in the rotor. To insure that the battery stays fully charged, most regulators are set for a system voltage between 14.5 and 15.5 volts. Advice: On older vehicles the voltage regulator was often a separate part from the alternator. Most modern alternators have a built in voltage regulator. Some are accessible on the outside of the alternator, while others are internal and are usually serviced by replacing the alternator. Other than obvious burn marks on the casing, it's hard to condemn a voltage regulator without testing it. If the voltage regulator is suspected to be bad, check to ensure that it can be tested before removing it from the vehicle.

Fusible Link:
Operation: A fusible link is a fuse that resembles a short piece of wire. Sometimes there will be a rubber barrel shaped marker attached to the link to visually set it aside from the rest of the wiring. Fuses and fusible links are designed to protect the circuit that they are a part of. If the current in a given circuit exceeds the amperage that it is designed for, the fuse or fusible link is supposed to burn and stop the flow of current before damage can occur to the components in that circuit. Advice: If the charging system tests faulty on the car and the alternator and voltage regulator test good off the car, you may have a blown fuse or fusible link. Check the fuse box lid or owners manual to see if there is a charging system related fuse.

Charge Indicator:
Operation: The charge indicator is a light on the dashboard that illuminates whenever system voltage drops below a predetermined level. Advice: On older vehicles the charge indicator bulb was an integral part of the charging system circuit. If the bulb burned out, the system would not charge. Most modern systems employ a resistor wired in line with the bulb to maintain the integrity of the circuit if the bulb burns out. You can check the bulb by turning the ignition switch on without starting the engine. With the engine off and the ignition switch in the run position, the charge indicator lamp should be on.

Ignition Switch:
Operation: The ignition switch is an integral part of the electrical system. The majority of automotive system components do not receive any electrical current unless the ignition switch is on. Advice: It is possible for a faulty ignition switch to cause problems in the charging system, however if a faulty ignition switch is the cause of a charging system problem, there will probably be other ignition switch related symptoms as well.

Alternator:
Operation: The alternator is most commonly driven by either a v-belt or a ribbed or serpentine belt. Advice: A loose or glazed drive belt can slip, causing the alternator to spin slower than normal resulting in low alternator output. At the other extreme belt tension that is too tight can prematurely wear out any bearings that are involved.
 

You can count on  A & A Complete Auto Repair Houston for all your Diesel & Gasoline car or truck Repair in the Houston metro Area Pasadena Pearland Conroe Deer Park Friendswood Galveston Lake Jackson La Porte League City Missouri City Sugar Land Texas City The Woodlands Angleton Bellaire Clute Dickinson Freeport Galena Park Humble Jacinto City Katy La Marque Richmond Rosenberg South Houston Stafford Alief West University Place. Call us today at 281-564-7782 or visit our shop at 12160 Bissonnet St., Houston, TX 77099 . Your Satisfaction is Our Ultimate Goal.

Maintaining Your Engine

There are many different areas that need to be maintained on a regular basis to keep your engine running properly. Lets look at these areas and explain what and why these items need to be serviced.

Air Filter - Replace the air filter about every 15,000 miles for normal driving conditions. A dirty air filter will not cause the engine to run bad, unless it is completely plugged. A dirty filter can cause reduced fuel economy and higher exhaust emission gases.

Fuel Filter -Fuel filters become clogged with dirt and debris during normal operation and should be replaced to increase performance, extend fuel pump life, and aid in fuel economy.

Spark Plugs - Worn or faulty spark plugs can cause misfire, poor fuel mileage, loss of power, and slow or extended starting time.

Spark Plug Wires - Spark plug wires should be replaced when replacing spark plugs to get maximum performance and life expectancy of spark plugs.

Distributor Cap/Ignition Rotor - These items should be inspected/replaced when replacing spark plugs and spark plug wires, or when a "major tune-up" is called for. The distributor cap is where the other end of the spark plug wires connects to, and the ignition rotor in underneath the distributor cap. Some newer model vehicles do not have a distributor at all. These cars are designed with Distributor less Ignition Systems (DIS.), and therefore do not have these parts. All of these items need to be checked every 15,000 to 30,000 miles. Check with A & A Complete Auto Repair Houston  for the proper maintenance schedule for you car or truck.

Here at A & A Complete Auto Repair Houston, we service all Cars and Trucks, Gasoline and Diesel , Foreign and Domestic. Our specialties include: Tune ups, Brakes, Suspension, CV joints, Struts, Shocks, Rotors, Calipers, Tie rods, Control arms, Engine repair or replacement, Transmission service or replacement, Clutch for manual transmission, Cooling fan, Radiator, AC System, Ignition system, Starter, Alternator, Fuel pump and fuel delivery system, Oil change, Oil pan gasket, Head gasket , Valve cover gasket, Electrical, Major and minor mechanical repair, Car detailing and restoration. We offer Free Diagnosis with repairs and provide Free Towing services with major repairs, call for details or visit us today at 12160 Bissonnet st., Houston, TX 77099. 281-564-7782 A & A Complete Auto Repair, Your One Stop Shop For All Your Car Needs. (Original article link:www.yourautoadvisor.com)