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Vehicle
Clinic |
Is your vehicle sick? Click here for doctors opinion. |
SOUNDS THAT SHOULD CONCERN YOU( FROM THE TYRES)
HUMPTHUMP THUMPTHUMP THUMPTHUMP
Where: From one or more tires.
When: At low speeds, especially in the morning. Speeds up with car.
What: Flat-spotted tire. As the tire rotates the flat spot thumps on the ground. Nylon-cord tires will flat-spot overnight and make this sound until they warm up. It`s usually worse in colder weather. You can permanently flat-spot the tires by locking up the wheels, grinding massive amounts of rubber off the tread in one spot.
Urgency: Nada.
Fix: Replace your nylon tires with steel-belted tires. If you`ve ground down your tires like a pencil eraser, you can either live with the vibration until wear reduces the flat-spotting, or buy new tires.(MSN LIFESTYLES)
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SOUNDS THAT SHOULD CONCERN YOU (FROM THE ENGINE UNDER THE HOOD/BONNET)
FFFFffff ttttFFFF ffff ttttFFFFffff tttt
Where: Under the hood.
When: Most noticeable at idle.
What: An exhaust manifold gasket has failed, venting hot exhaust gases to the air.
Urgency: It`s not getting better on its own. The blowtorch of corrosive gases will eventually damage the manifold. Carbon monoxide from the leak may make you drowsy or cause death.
Fix: Replace the exhaust manifold gasket before the leak eats a hole in the manifold.
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HOW TO CHANGE AUTOMATIC TRANSMISSION FLUID
Place your car at a level surface. Start the engine. Set transmission lever to the parking position, and let the engine idle Dry the dipstick with a lint free clean rag or tissue. Then set it back carefully all the way down into its place.
Pull again and check the fluid level. If the engine is cool, it should be at the upper end of the COLD mark. If the engine is hot, the level should be at the upper end of the HOT mark. If its lower, you should add some amount of automatic transmission fluid. Check the fluid condition also If its too black and has a burnt smell - your transmission is not going to last. Normally it should be clean and transparent, as in the image. Its color may be different, from red to brown. Wipe the dipstick with clean white paper and look at the paper. Normally there should be no black deposits, no metal particles, no dirt left on the paper.
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ANTI LOCKING BRAKING SYSTEM-ABS
The system uses onboard computers linked to individual wheel sensors to automatically `pump the brakes` at a rate faster and more precise than human reflexes can duplicate. Anti-lock brakes also apply pressure selectively, by sensing which wheels are close to lockup at any instant and then lowering braking pressure to those wheels until they rotate properly. ABS works only in hard panic stops and does not engage in normal braking situations.
Changing tire sizes may affect ABS performance because a different size tire will rotate at a different speed. This will affect the operation of the wheel sensors. For more information, consult the owner`s manual for the vehicle or find out from the agents.
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SOUNDS THAT SHOULD CONCERN YOU (FROM UNDER THE CAR TOWARDS THE REAR)
Ticktickticktick
Where: Under the center of the car, toward the rear.
When: While in motion and varying with road speed.
What: U-joint (rwd or 4wd only). A U-joint in your drive shaft has finally run out of grease, is getting loose, and is about to fail.
Urgency: That is really just an urban legend about cars pole-vaulting over broken driveshafts when U-joints fail at speed, right?
Fix: Replace all the U-joints and keep the new ones greased regularly.
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