TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > AMC 6 Cylinder Engine Repair and Modifications
  New Posts New Posts RSS Feed - CeC technical information?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

CeC technical information?

 Post Reply Post Reply Page  <1 456
Author
Message
73Gremlin401 View Drop Down
Supporter of TheAMCForum
Supporter of TheAMCForum
Avatar

Joined: Mar/02/2013
Location: Stmbt Sprgs CO
Status: Offline
Points: 565
Post Options Post Options   Thanks (0) Thanks(0)   Quote 73Gremlin401 Quote  Post ReplyReply Direct Link To This Post Posted: Jun/07/2019 at 11:27am
Originally posted by MIPS MIPS wrote:


I think I mentioned it before in the thread that a working O2 sensor is ESSENTIAL, otherwise you enter closed-loop and the computer will immediately stick you in a max lean or max rich condition which makes the engine run like crap.

THIS!   So very very true.  the 02 sensor is everything.  Every time I talk with someone about how much they hate how their feedback BBD motor runs, and how they are going to tear everything off, I always ask them if they've replaced the 02 sensor.  And invariably the answer is either no, or that they insisted their motor doesn't have one, because it has a carb.  And it's just about the cheapest 02 sensor on the market - I think I paid around $5.00 for mine on Rock Auto.  yes, it's a pain in the rump to get to, but the instant I changed mine out - I immediately had a better running motor.  But trying to convince the 'I'm gonna tear everything off' guys this is like talking to a brick wall.


Edited by 73Gremlin401 - Jun/07/2019 at 11:34am
73 Gremlin 401/5-spd.
77 Matador 360/727.
80 Concord Limited 4dr. 258/904


Back to Top
tomj View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/27/2010
Location: los angeles
Status: Offline
Points: 2977
Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Jun/09/2019 at 10:12pm
73gremlin401 -- ok that makes a lot more sense -- a multi-step rod-in-jet. well within what a stepper can reasonably do.

that's a lot of interim complexity. developing EFI was difficult and slow. it's easy now that a zillion hours have gone into the software.

1961 roadster american
Back to Top
MIPS View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: Mar/11/2019
Location: Kamloops, BC
Status: Offline
Points: 48
Post Options Post Options   Thanks (1) Thanks(1)   Quote MIPS Quote  Post ReplyReply Direct Link To This Post Posted: Jun/09/2019 at 11:05pm
Just a heads up, I went back and re-read the documentation and I am wrong about how many steps the stepper motor can do by a HUGE amount.

Originally posted by AMC Mechanics Manual for 1982, page 1J-61 AMC Mechanics Manual for 1982, page 1J-61 wrote:

The motor has a Range of 100 steps, but the normal operating area is mid-range (e.g., 40 to 60 steps).


I said something like 16? That's way off. Take the number above, not the number I said back on page 4.
Back to Top
FSJunkie View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/09/2011
Location: Flagstaff, AZ
Status: Offline
Points: 3504
Post Options Post Options   Thanks (1) Thanks(1)   Quote FSJunkie Quote  Post ReplyReply Direct Link To This Post Posted: Jun/10/2019 at 4:09am
Originally posted by 73Gremlin401 73Gremlin401 wrote:

But trying to convince the 'I'm gonna tear everything off' guys this is like talking to a brick wall.


No, it's worse. I've talked to brick walls before, and at least when talking to a brick wall all you hear the sound of your own voice echoing back at you and nothing more. Walls don't say nasty things back at you when you tell them something they don't want to hear.

The key to happiness in owning 1970's and 1980's cars is not giving one single flying fack what people think, and caring even less about changing what they think.

That's just owning AMC's in general. You have to not care what Ford, Chevrolet, and Dodge people think and ignore the horrible and totally false things they sometimes say to you.
'66 Marlin: 327/T10/3.54 Twin Grip
'72 Wagoneer: 360/TH400/3.31
'73 Ambassador: 360/TF727/3.15
'77 Hornet: 232/TF904/2.73
'84 Eagle: 258/TF998/2.35
Back to Top
farna View Drop Down
Supporter of TheAMCForum
Supporter of TheAMCForum
Avatar
Moderator Lost Dealership Project

Joined: Jul/08/2007
Location: South Carolina
Status: Offline
Points: 15958
Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Jun/10/2019 at 5:28am
The stepper needles in a BBD are tapered, not stepped like Carter carb jet rods. Makes them more adjustable.

Frank Swygert
Back to Top
 Post Reply Post Reply Page  <1 456
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.063 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or