-
Grand Future Air Dried Fresh Beef Dog Food
Air Dried Dog Food | Fresh Beef

Carnivore Diet for Dogs

Go Back   Automotive Forums Car Chat > Engineering/ Technical
Register FAQ Community
Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works?
Reply Show Printable Version Show Printable Version | Subscription Subscribe to this Thread
 
Thread Tools
  #1  
Old 01-07-2002, 12:13 PM
alleycat24 alleycat24 is offline
AF Newbie
 
Join Date: Jan 2002
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Question driving a 5 speed

Please help..! answer this question...everyone who drives a 5 speed.my husband insists that when driving our 5 speed 99 ford truck that when slowing down i must" downshift"..My husband gives me hell... I always step on my brake then put it in the gear according to my speed...he says to drive "properly you have to "downshift" thru all gears to slow down without using the brake....PLEASE HELP..: I was told that a transmission should not be used to stop a vechiel..Is this correct..
Reply With Quote
  #2  
Old 01-07-2002, 01:26 PM
YogsVR4's Avatar
YogsVR4 YogsVR4 is offline
Funding the welfare state
 
Join Date: Feb 2001
Posts: 17,795
Thanks: 0
Thanked 2 Times in 2 Posts
Send a message via AIM to YogsVR4
Using the transmission to stop the vehicle is not a good thing to do, but its not unusual to use it to slow down. That doesnt put much strain on it, but rapid downshifting without braking will tear up the tranny (no matter how many gears it has).













__________________
Resistance Is Futile (If < 1ohm)
Reply With Quote
  #3  
Old 01-07-2002, 02:00 PM
enginerd's Avatar
enginerd enginerd is offline
AF Enthusiast
 
Join Date: Sep 2001
Posts: 458
Thanks: 0
Thanked 0 Times in 0 Posts
With the advent of synchromesh in the late 1940's shifting through every gear to a halt is no longer neccessary. Rig drivers use compression braking very often, if your husband drives a semi-tractor I can understand his point. However, automobile brakes are more than sufficient to stop a car without using compression braking.
Reply With Quote
  #4  
Old 01-07-2002, 06:20 PM
Steel's Avatar
Steel Steel is offline
AF Fanatic
 
Join Date: Aug 2001
Posts: 4,027
Thanks: 0
Thanked 0 Times in 0 Posts
from 5th to 4th, or 4th to 3rd, is ok, but after that i just pop her in neutral and use the brakes. I dont like thinking aobut that poor clutchplate wasting away, or seeing the engine shoot up to 4500 RPM (i have a truck). But just braking is fine.
__________________
Reply With Quote
  #5  
Old 01-08-2002, 12:18 AM
Polygon's Avatar
Polygon Polygon is offline
The Red Baron
 
Join Date: Oct 2001
Posts: 7,823
Thanks: 1
Thanked 2 Times in 2 Posts
Send a message via MSN to Polygon Send a message via Skype™ to Polygon
Personally, I use both the brakes and the engine to slow the car, it does save the pads a little. But I would never just use the engine to stop the car.
Reply With Quote
  #6  
Old 01-08-2002, 02:32 PM
DravenGSX DravenGSX is offline
AF Newbie
 
Join Date: Jan 2002
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to DravenGSX
Think about it this way. What costs more to replace? Brake pads/rotors or motor/transmission? I'd rather change the brakes 10 times than have to pay for a new motor and or transmission. It is absolutely not necessary to downshift in order to slow down. There are times when it may be beneficial for you to do so (i.e. in the snow), but it is not required and is in fact undesirable.
__________________
'99 Neon (DOHC)
Reply With Quote
  #7  
Old 01-10-2002, 01:02 AM
Doctor Doctor is offline
AF Regular
 
Join Date: Nov 2001
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
There are ways you can down shift with out causing to much stress on your clutch and tranny.

Just shuffle your way down the gears and use depress your accelerator before you release the clutch so the engine and tranny has already caught up with the inertia of the vehicle. Some times you don't even need a clutch to put it in gear beacuse the engine revs and tranny are syncronised. Thats only if you know your car well!

Ben
Reply With Quote
  #8  
Old 01-18-2002, 03:03 AM
GTStang's Avatar
GTStang GTStang is offline
Stang Guy
 
Join Date: Jan 2002
Posts: 4,189
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to GTStang
Best way is to slow down in a manual is like this:

Say your going from 4th to a stop. Push the clutch in and use the brakes to stop. While coming to a stop work you way down throught the gears 4th to 3rd, 3rd to 2nd, 2nd to 1st. The reason to do this even though there is no power going to the transmission is because the synchro's in a tranny are set-up to go in order. Skipping gears will slow take there toll on the tranny's synchro's. To replace synchro takes as much works as rebuilding a manual so save yaself some $$$
Reply With Quote
  #9  
Old 01-29-2002, 04:15 PM
SaabJohan SaabJohan is offline
AF Enthusiast
 
Join Date: Nov 2001
Posts: 1,098
Thanks: 0
Thanked 0 Times in 0 Posts
There is no need to go through all gears. That is only done in sequential racing gearboxes.
The engine takes no damage by using it to brake. (only twostrokes and race engines can take damage) That is of course if you don't over rev it.

Brakes -> push down clutch -> downshift -> clutch, and don't slipper on it -> next gear if neccesary

By using the engine to brake you will get a lower fuel consumtion (with a new electronic direct injection engine it will use NO FUEL when braking).
It will also reduce wear on brakepads and discs.
Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
Speed sensor maybe transmisson???? c_evans1979 Caravan | Voyager 8 03-15-2009 01:27 PM
Missing At Driving Speeds CAPRICE LIFE Caprice 4 02-13-2006 12:19 PM
Engine cuts out and stops at driving speeds RivDoc112 Grand Cherokee | Grand Cherokee SRT8 6 09-08-2004 11:50 PM
Engine stumbles on driving speed glortiz '88 - '91 Civic | CRX | Wagon | Shuttlee 4 08-09-2002 12:18 AM

Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums Car Chat > Engineering/ Technical


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:47 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts