Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine
Sign in using an external account
Register Forgot Password?

Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 05-17-2007, 05:29 PM   #1
Senior Member
 
Join Date: May 2006
Location: Bartlesville, OK
Posts: 524
Car: 2011 Cummins HO
Engine: 350 HSR
Transmission: T-56
Axle/Gears: 3.43

Classifieds Rating: (0)
Send a message via MSN to Ricco
What happens when you turn the key?

OK, i think i have a basic understanding of how most things work (car wise) except for this.. When you turn the key to start the engine, i know the starter cranks, the fuel pump runs, the injectors open, the spark plugs spark.. etc etc.. we have life!

BUT....

What happens when you turn the key off and you want to shut down the engine? It can't just turn off the fuel pump, the car shuts down too quick for it to of run out of fuel.. it can't turn off the injectors, carbs dont have injectors..

So, the question is, what ACTUALLY happens when you turn the key to off, how does it kill the motor? EFI, Carb, Diesel (i'm guessing Diesel and EFI will prob be roughly the same?)

Ricco is offline vBGarage Page   Reply With Quote
Old 05-17-2007, 05:35 PM   #2
Senior Member
 
STEEL's Avatar
 
Join Date: Nov 2006
Posts: 279
Car: 1991 Camaro RS
Engine: LO3
Transmission: T-5

Classifieds Rating: (0)
Send a message via AIM to STEEL Send a message via MSN to STEEL
Re: What happens when you turn the key?

well, as far i know, it just stops sending electricity to the coil, but i could be wrong.

Diesel, I wonder if they just shut down the injectors.

Im not totally sure though.
STEEL is offline vBGarage Page   Reply With Quote
Old 05-17-2007, 05:52 PM   #3
Moderator
 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Rio Oro de Santa Ana, San Jose, Costa Rica
Posts: 19,819
Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

Classifieds Rating: (0)
Re: What happens when you turn the key?

On a gas engine, the power is turned off to the ignition. On fuel injected cars, the ECM, fuel pump and injectors also all lose their power.
Apeiron is offline vBGarage Page   Reply With Quote
Old 05-17-2007, 06:09 PM   #4
Senior Member
 
Join Date: May 2006
Location: Bartlesville, OK
Posts: 524
Car: 2011 Cummins HO
Engine: 350 HSR
Transmission: T-56
Axle/Gears: 3.43

Classifieds Rating: (0)
Send a message via MSN to Ricco
Re: What happens when you turn the key?

Quote:
Originally Posted by Apeiron View Post
On a gas engine, the power is turned off to the ignition. On fuel injected cars, the ECM, fuel pump and injectors also all lose their power.
So one of the relays activated by the ignition switch supplies power to the Coil?

Cheers,
Richard.
Ricco is offline vBGarage Page   Reply With Quote
Old 05-17-2007, 07:05 PM   #5
Moderator
 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Rio Oro de Santa Ana, San Jose, Costa Rica
Posts: 19,819
Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

Classifieds Rating: (0)
Re: What happens when you turn the key?

I believe coil power is switched directly through the ignition switch, not through a relay.
Apeiron is offline vBGarage Page   Reply With Quote
Old 05-17-2007, 07:05 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine

Tags
2000, car, diese, diesel, dodge, engine, ignition, key, power, ram, shuts, shutting, switch, turn, turned
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 01:52 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright © 1997 - 2012 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details