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  #4633  
Old 07-02-2013, 04:36 AM
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Re: 2014 Grand Cherokee information - Australia

If you're going to the shop 1km away, if its not raining, you should walk or pedal a bike!

This small thing will make you happier and live longer ( as long as you keep out of the way of buses)
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  #4634  
Old 07-02-2013, 04:38 AM
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Re: 2014 Grand Cherokee information - Australia

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Originally Posted by Pharmaboy View Post
If you're going to the shop 1km away, if its not raining, you should walk or pedal a bike!

This small thing will make you happier and live longer ( as long as you keep out of the way of buses)
I think he is looking for excuses to take it for a drive lol.


I saw a car sticker somewhere once that said "I don't leave a carbon footprint..... I drive everywhere !
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  #4635  
Old 07-02-2013, 05:15 AM
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A question. In the past with diesels I was always told to leave the engine running between short stops etc. Also to run the engine for a while before driving. I also have two trucks and on the 16 tonne truck with the turbo charged diesel engine my mechanic advises that I should always cool the engine down a little prior to turning the motor off. Apparrently turning my truck engine off after coming to a quick stop is not good for the turbo. Just wondering. Do any tech heads know the answers. With modern diesel motors like on our Jeeps. 1. Should they be warmed up a little prior to driving off?. 2. Should they be cooled off a little before turning the engine off to prevent any harm to the turbo? 3. With my trucks, when loading, unloading etc I have often been advised by mechanics to leave the engine running as diesels just love running and will run all day....the longer the better. What is the case with modern motor car diesels? Are they different to trucks?..and last one...N0.4. Any harm in jumping in our CRD Jeeps to duck down for a litre of milk just a kilometre or two away or should I be using my "electric" bicycle?

You may have read I have a Truckie mate who has driven Semi's most of his life. Bert reckons that you need to idle the engine after a trip down the highway, this is to allow the turbo to cool down a little by allowing engine oil to circulate. Otherwise I don't think it matters a great with modern diesels if you pre warm them, unless of course maybe during winter.

All engines petrol and diesel do benefit by a slight warm up and easy use of the throttle until the engine has reached operating temperature, this equals better engine life and less fuel used. My Nissan Patrol turbo diesel ( soon to be sold) has a warm up switch which when activated ups the revs a little when on idle. I have always followed the above and my Patrol has clocked up over 300,000 km and the engine is still like new, I get good economy and the engine oil never needs topping up.

Lastly, all you prospective and owners of Jeep CRD's please be sure to change your oil on or before it's required, diesels are very hard on engine oil because the oil structure breaks down much quicker than a similar petrol engine. A lot of this is due to the much higher stresses and piston gas blow by which affects your oil, nothing wrong with using the manufacturers standard recommended oil, just change it often.

( I don't pretend to be a big diesel expert, but I was for many years a member of the Institute of Automotive Mechanical Engineers and my mate Bert is a wizard when it comes to fixing big diesels).

Hope this has been of some assistance.
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  #4636  
Old 07-02-2013, 05:47 AM
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Re: 2014 Grand Cherokee information - Australia

webber to answer your question.
Yes you should warm up the car before you drive and allow it to idle for a few minutes before shutoff, but many wont.
Modern diesels are designed to start and go and then stop without any cool down.

A 800hp truck is very different to the CRD, in both design and operation.

All I do is start the car and let it idle for about 60sec while I put my crap in the correct places (phone/wallet/briefcase) then drive away. I will also always idle down the car for 30 seconds before shutoff. This will just allow the turbo to spin down while the motor is running.
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  #4637  
Old 07-02-2013, 06:03 AM
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Re: 2014 Grand Cherokee information - Australia

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Originally Posted by ENFORCER View Post
webber to answer your question.
Yes you should warm up the car before you drive and allow it to idle for a few minutes before shutoff, but many wont.
Modern diesels are designed to start and go and then stop without any cool down.

A 800hp truck is very different to the CRD, in both design and operation.

All I do is start the car and let it idle for about 60sec while I put my crap in the correct places (phone/wallet/briefcase) then drive away. I will also always idle down the car for 30 seconds before shutoff. This will just allow the turbo to spin down while the motor is running.

Thanks Enforcer. However, you do leave question marks hanging there. You start off with stating that you SHOULD be allowing car to warm up and cool down, which is your practice and mine with my trucks BUT then on the next line you confirm that "modern diesels are designed to start and go and then stop without any cool down". Being a creature of habit I am doing what you do but is it really necessary? If the manufacturer is confident the modern diesel does not require this treatment then why are we wasting fuel and polluting the atmosphere (No, the last thing I am not is a wacko "greenie". As they say, the more you surround yourself in concrete and ashphalt the greener these pseudo greenies get) However, we would like to think we are real greenies in our business growing trees. Sorry to bounce this back to you, just being the devils advocate here.
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  #4638  
Old 07-02-2013, 06:07 AM
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Just new to this site wanted some info on new JGC I will repost with my questions in 4 weeks once I have read this thread so I don't ask Any stupid questions lol
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  #4639  
Old 07-02-2013, 06:17 AM
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Re: 2014 Grand Cherokee information - Australia

Work backwards rain13. Grumpies can remember what was asked last week, but have no hope for Something asked in April, so they ll happily provide the answer for that

Webber, you got it: what's good for the engine and what's good practice is completely different to what the average driver will do. While cummins can inform the owner of the 300,000 km one year old engine that its farked, and you should let it cool after hauling so hard; consumer law would say, tough shit mr multinational , you can't expect soccer mum to have a working knowledge of Diesel engines, so you better make sure it doesn't need all that extra care to survive until the warranty expires .......
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Old 07-02-2013, 06:19 AM
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Re: 2014 Grand Cherokee information - Australia

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Just new to this site wanted some info on new JGC I will repost with my questions in 4 weeks once I have read this thread so I don't ask Any stupid questions lol
I envy you Speed Readers
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  #4641  
Old 07-02-2013, 06:21 AM
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Re: 2014 Grand Cherokee information - Australia

Anyone interested in attending the Leo Muller Group 2014 Grand Cherokee Launch? I have two tickets but unfortunately my plans have changed and can't make it.

4th July , 6pm, Albion Chrysler Jeep Dodge, 75 Sandgate Road Albion QLD .
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Old 07-02-2013, 06:41 AM
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Re: 2014 Grand Cherokee information - Australia

Webber, ENFORCER is basically correct in what he is saying.
However, unless you are a boy racer, and if you drive "normally", you should not be concerned with having to let the engine idle before switching off. You probably only need to do that if you are on a freeway and come to a quick stop, or just climbed a hill. Basically, the turbo should not be that hot with town driving. Most people spend the last 60seconds of a drive at less than 20kph, like when the pull into a driveway.
Regarding starting in the morning, the old school thinking was to warm the engine prior to driving. Modern approach is that you do more damage idleing a cold motor that if you drive it. Driving will give the engine a shorter time to reach operating temps, and get the oil circulating better. Again, if you are a boy racer, warm the engine first.
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Old 07-02-2013, 06:44 AM
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Old 07-02-2013, 06:47 AM
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Re: 2014 Grand Cherokee information - Australia

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We all know Webber is a boy racer.
LOL.
I heard he asked the guys who installed the 3M, whether they had 3M flames, for the hood.
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