| Author |
Message |
    
Brian Friend (Brianfriend)
| | Posted on Thursday, December 19, 2002 - 03:55 pm: | 
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I swas just sitting here thinkging. You can push start a std, but you can't a auto. Just wondering why. Both std and auto reduce and transmit engine power to the axles. Anyone feel like giving explaining to me?
Who knows maybe someone can find a way to make this question into a flaming post at the same time. That would be economy of effort. |
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, December 19, 2002 - 04:02 pm: |
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hehe. when I was growing up, you could start an auto by pushing it.
Starting Engine By Pushing Car. In case the engine fails to start in the normal manner, it may be started by pushing. This is preferred to towing because there's a possibility of damaging the towing car when the engine starts.
To push-start the engine, turn the ignition key "on" and depress the accelerator pedal slightly. After the car has been pushed to a speed of about 15 m.p.h., push the "1" button and the transmission will turn the engine over to start it.
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James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, December 19, 2002 - 04:03 pm: |
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not much luck today
 |
Dave_Lucas (Dave_Lucas)
| | Posted on Thursday, December 19, 2002 - 04:44 pm: |
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Wow I am having a flashback,
The first car I ever drove had a push button transmission. |
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, December 19, 2002 - 04:47 pm: |
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yeah, same here. thats probably why it stuck in my mind.
Jaime |
Brian Friend (Brianfriend)
| | Posted on Thursday, December 19, 2002 - 05:04 pm: |
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Where can I get some of those push buttons?
And also-----why can't I push start my auto 97d1? |
Brian Friend (Brianfriend)
| | Posted on Thursday, December 19, 2002 - 05:05 pm: |
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BTW..Dave,
I have your brush bar on my roof rack, I will be in the denver area next week I think. |
James F. Thompson Jaime (Blueboy)
| | Posted on Thursday, December 19, 2002 - 05:10 pm: |
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 |
Peter Matusov (Pmatusov)
| | Posted on Thursday, December 19, 2002 - 05:18 pm: |
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Brian,
you need a rear-mounted pump in the transmission for it to happen. it's probably been 30 years since this option disappeared from most if not all automatics.
peter |
muskyman
| | Posted on Thursday, December 19, 2002 - 05:24 pm: |
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the torque converter when driven from the engine side compreses fluid and forms a viscous coupling that then drives the mechanical part of the automatic ••••••.
when the motor isnt running it lacks this coupling to transfer torque.
because the torque in a push start comes from the drivline back to the •••••• and there is no coupling the motor then does not get turned over
happy holidays |
Trannyman
| | Posted on Thursday, December 19, 2002 - 06:41 pm: |
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no rear pump is the correct answer!
auto trannys have to have pressure to work,
& the pump that does the job is driven by the engine running at speeds over 500rpm.
the rear pump (driveshaft driven)trannys disappeared in the mid 60's,
push starting usually burnt up the clutches
when tried 2-3 times!
2 pumps wernt worth the cost to make,
or fix under warrantee.
that bottom line thing came into view.
A/T 101 |
Brian Friend (Brianfriend)
| | Posted on Thursday, December 19, 2002 - 09:57 pm: |
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Cool,
I have often wondered why. The viscus coupling makes sence now. So, are there any emergency push starting technics that can be used on a modern auto. |
Brian (Rover_Wannabe)
| | Posted on Friday, December 20, 2002 - 09:33 am: |
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My educated guess is that yes there is a way to push start all modern automatics! All you have to do is put the vehicle in Neutral, and push it until you find someone that can start it with cables.
Brian |
Brian Friend (Brianfriend)
| | Posted on Friday, December 20, 2002 - 10:45 am: |
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Ah yes, Brian. I knew there had to be a way |
Greg French (Gregfrench)
| | Posted on Friday, December 20, 2002 - 12:55 pm: |
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MIne barely starts using the key most of the time! |
Peter Matusov (Pmatusov)
| | Posted on Friday, December 20, 2002 - 01:32 pm: |
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Greg,
upon much though on how to push-start the auto, the only idea i came upon is to wind the rope around the torque converter, and to yank the bastard (outboard-style). There's got to be an access plate somewhere.
come to think of it, it can even start...
peter |
Brian Friend (Brianfriend)
| | Posted on Friday, December 20, 2002 - 02:20 pm: |
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Peter,
You may be on to something there. I guess I need o dig out the service book and take a look at that. Seems like it would be a plausible solution. Kind of like starting a lawn mower. |
Peter Matusov (Pmatusov)
| | Posted on Friday, December 20, 2002 - 02:28 pm: |
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LOL, that's just what it is.
you need to make sure you rope doesn't stick there when the engine starts
peter |
Leslie N. Bright (Leslie)
| | Posted on Friday, December 20, 2002 - 04:08 pm: |
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Use the hand crank..... oh wait, we're talking Discos, not Series.....
-L |
Ken Dunnington (Ihwillys)
| | Posted on Friday, December 20, 2002 - 04:13 pm: |
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trannyman has it. The four-speed Hydramatic in my '55 has two pumps, one in the rear that gets driven by the driveshaft in the case of a 'push' start.
It's not because of the VC. If the internals of the trans were being driven by the driveshaft the pump would quickly fill up the VC(if it leaks down while off) and varoom. As it is on modern autos, the driveshaft is turning and the rear output shaft of the trans is turning but without a pump back there, no action gets through the trans to the pump(or VC for that matter) because there is no pressure for the solenoids to engage the bands.
Ken |
Blue (Bluegill)
| | Posted on Friday, December 20, 2002 - 04:52 pm: |
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stop, you're bringing back nightmares of solo flat-land push starts |
Peter Matusov (Pmatusov)
| | Posted on Friday, December 20, 2002 - 05:11 pm: |
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what four-speed Hydramatic in your 55?
there ain't four speed THMs that i know about (they sure didn't make 4L80 in 55).
always something to learn |
Keith Kreutzer (Revor)
| | Posted on Saturday, December 21, 2002 - 12:05 am: |
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AHHHHHH!!!!!!!!!!!!!
You guys are hurtin' my head!!!!!
Brian Friend you are going to be in the smoggy north part of the state sometime soon? Maybe you cold throw a cargo area cover in the back seat and i could come down to meet you both. Called you at work the other day... You took the day/week or somthin' off! Damn!... Anyway i'd like to meet up.. You sold the Wheels yet?
Keith |
Dave_Lucas (Dave_Lucas)
| | Posted on Saturday, December 21, 2002 - 12:24 am: |
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Keith,
where are you from? I am in the Fort Collins area. |
Ken Dunnington (Ihwillys)
| | Posted on Saturday, December 21, 2002 - 10:07 am: |
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Hey Dave, I'm in Fort Collins, over near Prospect and Overland Trail.
Peter, it's not a turbo hydro matic, it's a Hydramatic. It was a GM product of the 40s, 50s. Found in all sorts of things including Pontiacs such as my '55 Chieftain. Was used in some battle tanks. Was used in Bentleys. It is not an overdrive auto, fourth is direct. It has a low first gear, much lower than an auto of today because it did not have a torque converter but a simple VC as it has no stator. With no torque multiplication a low first gear was used to get things going. It shifts out of first very quickly. And it's HEAVY, the body is cast steel, not Al.
Ken |
Brian Friend (Brianfriend)
| | Posted on Saturday, December 21, 2002 - 11:41 am: |
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Yup,
I will be heading to the aurora area on chrismass eve. I've got a ton of family things going on but I might be able to make it work. I've got a brush bar on top of my roof rack right now and I can throw the cover in the back.
I still have the wheels.
brian |
Keith Kreutzer (Revor)
| | Posted on Saturday, December 21, 2002 - 05:29 pm: |
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Brian/Dave/Ken and all the rest of you front range folks...I'm in the middle... Longmont to be exact...
Brian I understand about the Christmas eve thing and it's cool if we don't hook up... I may be in the middle of a Discoproject that early in the week... Depands on how things go as to whether or not I can get free on Tuesday. Tommorow I'm slippin' in a detroit a TT and some 4.10 gears, changing the swivel ball seals. Monday i'm supposed to install Jump seats.
All of us that live on the front range (or in the state for that matter) should figure out a simple way to hook up for fun and four wheeling... I mean i don't know if anyone is interested in how to change the diffs in one of these trucks but if you want to drop by have a beer and watch... It's good comradery
It would be fun to set up a spring trip to Moab... We go every year at least once, this'll be the first time for the Disco |
Keith Kreutzer (Revor)
| | Posted on Saturday, December 21, 2002 - 05:34 pm: |
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I should buy those wheels....
How much now? |
Brian Friend (Brianfriend)
| | Posted on Tuesday, December 24, 2002 - 09:57 am: |
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Keith,
I usually wheel on sundays and lots of wed and I usually post in the trails section. I will be hitting moab this year, dont know dates yet.
I will be installing 411 gears down the road, hopefully this winter.
It is going to be real hard to hook up until after the holidays but as soon as I am back from my trip I will be up and running and hitting trails again.
The wheels.....that is the hard part. I still have them and I am still struggling. I think I should probably get about 300 for them but I am not real motivated to sell them. I keep thinking that I will use them someday.
Hope every one has a great christmass and that all your rover dreams come true. |
Gerald Parker
| | Posted on Sunday, January 05, 2003 - 08:12 pm: |
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As to pushing any car to start it I have several problems as follows:
1) My wife isn't strong enuf to push my Disco
2) My mother-in-law is (she could push start a Kenworth) but I don't let the bitch in my Disco
3) I bought an Automatic so that in case it needed to be push started I had a technical reason not to let my mother-in-law in the car thus avoiding a confrontation with my wife about her mother.
GP |
Peter Matusov (Pmatusov)
| | Posted on Monday, January 06, 2003 - 12:25 pm: |
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ROTFLMAO |
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