Category Archives: Car

The Parking Pawl

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What is a parking pawl?
parking-pawl
A transmission parking pawl is a metal pin or lever that engages the transmission’s output shaft when the transmission shifter lever is placed in the “Park” or “P” position. When the transmission pawl is engaged it restricts the output shaft (and drive wheels) from turning in either direction.parking pawl

Contrary to common thinking, the primary purpose of the transmission’s “Park” position (and parking pawl) is to keep the engine’s power from reaching the drive wheels when the engine is running, not to keep the vehicle from rolling when parked – this is the job of the parking brake (or e-brake). In fact, relying solely on the transmission’s “Park” position and the parking pawl to keep the vehicle from moving when parked places undue stress on the parking pawl, which can lead to premature failure of the pawl.

Signs that your parking pawl is worn out or broken
If your vehicle rolls forward or backward an inch or two after placing the shifter in the Park position, the parking pawl is worn out and weak. If your vehicle rolls freely when the shifter lever is in the Park position the parking pawl is broken.

Parking on an incline
When parking on an incline, undue stress is placed on the parking pawl unless the e-brake is set before the shifter lever is moved to Park. If the shifter lever is placed in Park before setting the e-brake, the parking pawl is holding the weight of the vehicle, not the parking brake. Overtime, when the parking pawl is used in this way, it becomes weak and can break.

If the parking pawl fails while the vehicle is parked and unattended, the vehicle is free to roll as gravity dictates. This is why you should never rely solely on the transmission’s Park position to secure a parked vehicle – always set the e-brake.

IMPORTANT TIP:
Replacing a worn or broken parking pawl is expensive. To prevent premature parking pawl failure always set the parking brake before you place the transmission shifter lever in the Park “P” position. Doing so insures the weight of the vehicle is being held by the brake rather than the parking pawl. Following this tip will help keep your automatic transmission in top shape saving you both time and money.

Source: http://myautomatictransmission.com/the-parkiing-pawl.htm

Absorber Mounting & Aircond Service

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Went to service my car tyres balancing & alignment, the mechanic told me both absorber mounting need to be replaced. Hopefully can claim warranty from Perodua.

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Myvi anti rust

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Have you done your yearly application of undercarriage compound recently for your Myvi? Is it a mandatory application or does it depend on service centre recommendation.

On 02/10/2013, receive reply from Perodua, check out below.
On 28/10/2013, finally done the anti rust. No need pay anything except for RM33 labour charge but need to bear the anti rust smell which is like burnt object.

scan0001 scan0002

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Warm up car engine before driving myth

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SHOULD I SHUT OFF THE MOTOR WHEN I’M IDLING MY CAR

HERE’S THE RULE OF THUMB: If you’re in a drive-through restaurant/business line or waiting for someone and you’ll be parked and sitting for 10 seconds or longer… turn off your car’s engine.

Why??

For every two minutes a car is idling, it uses about the same amount of fuel it takes to go about one mile. Research indicates that the average person idles their car five to 10 minutes a day. People usually idle their cars more in the winter than in the summer. But even in winter, you don’t need to let your car sit and idle for five minutes to “warm it up” when 30 seconds will do just fine.

But you’re not going anywhere. Idling gets ZERO miles per gallon.

The recommendation is: If you are going to be parked for more than 30 seconds, turn off the engine. Ten seconds of idling can use more fuel than turning off the engine and restarting it. And when you start your engine, don’t step down on the accelerator, just simply turn the key to start.

An alternative to idling is to park your car, walk inside, do your business and then go back to your car.

Here are some other Myths associated with idling.

Myth #1: The engine should be warmed up before driving. Reality: Idling is not an effective way to warm up your vehicle, even in cold weather. The best way to do this is to drive the vehicle. With today’s modern engines, you need no more than 30 seconds of idling on winter days before driving away.

Myth #2: Idling is good for your engine. Reality: Excessive idling can actually damage your engine components, including cylinders, spark plugs, and exhaust systems. Fuel is only partially combusted when idling because an engine does not operate at its peak temperature. This leads to the build up of fuel residues on cylinder walls that can damage engine components and increase fuel consumption.

Myth #3: Shutting off and restarting your vehicle is hard on the engine and uses more gas than if you leave it running. Reality: Frequent restarting has little impact on engine components like the battery and the starter motor. Component wear caused by restarting the engine is estimated to add $10 per year to the cost of driving, money that will likely be recovered several times over in fuel savings from reduced idling. The bottom line is that more than ten seconds of idling uses more fuel than restarting the engine.

Source: http://www.consumerenergycenter.org/myths/idling.html

Some Idiot Driver WKV6243

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This driver almost graze my car while forcefully cut into my lane from behind. Also the driver is staying at Metroview Condo Wangsa Maju, Kuala Lumpur.

[youtube http://www.youtube.com/watch?v=WlRvmcMCvXI]