Code help - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old December 13th, 2010, 08:29 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Code help

Got 48 stepper motor code. Truck has high idle. Cleaned it and soaked it in PB and it functions properly now. Still have 48 and high idle. Got the truck really, really wet recently. Ideas?

Thanks!
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old December 14th, 2010, 10:01 AM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Update. Check engine light is on. No more 48 code. No codes at all. Idles at 2000 rpms.
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #3  
Old December 14th, 2010, 10:14 AM
Hans's Avatar
Hans
Status: Offline
Hans Haase
The D-90.com Lab Rat
Member
 
Join Date: Oct 2003
Location: Long Island, NY
Posts: 2,381
Tried resetting the computer, to see if the code stays cleared now?

-Hans
__________________
My oil line fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My 100k stopped odometer fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old December 14th, 2010, 11:23 AM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Yes. Reset it a few times. I manually backed out the stepper motor until I got the desired rpms. The truck runs perfect now. Still has check engine light and code 48. Had the intake off to do injectors recently. Could a small air leak or vacuum leak throw a code 48?

Thanks
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #5  
Old December 14th, 2010, 11:26 AM
61rover's Avatar
61rover
Status: Offline
John Crouse
'93 NAS D110 (#8) / '61 Series II
Member
 
Join Date: Feb 2007
Location: Denver, CO
Posts: 1,116
Registry
Can you give a little more detail about adjusting the stepper motor? I think I have the same probem.

J.P.
Reply With Quote
  #6  
Old December 14th, 2010, 12:44 PM
Hans's Avatar
Hans
Status: Offline
Hans Haase
The D-90.com Lab Rat
Member
 
Join Date: Oct 2003
Location: Long Island, NY
Posts: 2,381
It's always possible that some kind of air/vacuum leak can cause it, if it's throwing the RPM's out of what enough. From the stuff I've found, it throws the code 48 under either of two conditions.
1: RPM below 500 with the stepper fully open.
2: RPM above 750 with the stepper fully closed.

-Hans
__________________
My oil line fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My 100k stopped odometer fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.
Reply With Quote
  #7  
Old December 14th, 2010, 01:00 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Quote:
Originally Posted by 61rover View Post
Can you give a little more detail about adjusting the stepper motor? I think I have the same probem.

J.P.
You can take the motor out and screw it in or out and it affects the idle. Now you know as much as me which is very little. lol

------ Follow up post added December 14th, 2010 12:02 PM ------

Quote:
Originally Posted by Hans View Post
It's always possible that some kind of air/vacuum leak can cause it, if it's throwing the RPM's out of what enough. From the stuff I've found, it throws the code 48 under either of two conditions.
1: RPM below 500 with the stepper fully open.
2: RPM above 750 with the stepper fully closed.

-Hans
number 2 is my problem. On top of that, I manually closed the idle crew all the way and there is no change to the way it runs. That should kill the motor. Must be vacuum or air leak to manifold....correct? Damn i wished I was smarter about this shit.
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #8  
Old December 14th, 2010, 01:17 PM
Hans's Avatar
Hans
Status: Offline
Hans Haase
The D-90.com Lab Rat
Member
 
Join Date: Oct 2003
Location: Long Island, NY
Posts: 2,381
Quote:
Originally Posted by huck1974 View Post
You can take the motor out and screw it in or out and it affects the idle. Now you know as much as me which is very little. lol

------ Follow up post added December 14th, 2010 12:02 PM ------

number 2 is my problem. On top of that, I manually closed the idle crew all the way and there is no change to the way it runs. That should kill the motor. Must be vacuum or air leak to manifold....correct? Damn i wished I was smarter about this shit.
That's what I'm thinking as well. The biggest potential leaks are in the intake tube between the MAF and the plenum. Thank goodness there aren't THAT many lines to check. Don't forget the normally-missed stuff such as the brake booster line.

-Hans
__________________
My oil line fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My 100k stopped odometer fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.
Reply With Quote
  #9  
Old December 14th, 2010, 01:55 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Quote:
Originally Posted by Hans View Post
That's what I'm thinking as well. The biggest potential leaks are in the intake tube between the MAF and the plenum. Thank goodness there aren't THAT many lines to check. Don't forget the normally-missed stuff such as the brake booster line.

-Hans
soaked everything down with a squirt bottle while running. It didn't kill the motor. No leaks.
I'll keep trying to figure it out. Your response has been much appreciated.
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #10  
Old December 14th, 2010, 02:19 PM
o2batsea's Avatar
o2batsea
Status: Offline
Bill Adams
66 109 sw 94 lwb
Member
 
Join Date: Jul 2009
Location: kensington md
Posts: 6,503
Registry
The stepper motor has absolutely nothing to do with idle, except to say that it keeps the engine from dying when you decelerate to an idle from speed. You can't really "adjust" it cuz the ECU runs it in and out as it sees fit.
You get high idle when there is a problem with a sensor. Something is giving the ECU bad info. Check for bad vacuum hoses first, check your T fitting, be sure the diz and timing didn't get moved some how.
__________________
Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
Reply With Quote
  #11  
Old December 14th, 2010, 06:21 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Quote:
Originally Posted by o2batsea View Post
The stepper motor has absolutely nothing to do with idle, except to say that it keeps the engine from dying when you decelerate to an idle from speed. You can't really "adjust" it cuz the ECU runs it in and out as it sees fit.
You get high idle when there is a problem with a sensor. Something is giving the ECU bad info. Check for bad vacuum hoses first, check your T fitting, be sure the diz and timing didn't get moved some how.
I checked everything you said and did a wet down to see if anything changed. It must be a sensor. Any guess as to how to chase that down?

I understand that the ECU runs the stepper motor but if I pull it out and give it a turn one way or the other, it is the only way I'm getting much of an idle adjustment right now.

Can the sensor to the charcoal canister have anything to do with the idle or code 48? I got rid of it a few weeks ago because I didn't want to replace the rotten lines and it has no real use.
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #12  
Old December 15th, 2010, 05:33 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Got everything fixed. Thanks for your help
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
  #13  
Old December 15th, 2010, 05:42 PM
o2batsea's Avatar
o2batsea
Status: Offline
Bill Adams
66 109 sw 94 lwb
Member
 
Join Date: Jul 2009
Location: kensington md
Posts: 6,503
Registry
What was it? Did it fix itself (have had that happen many times)?
__________________
Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
Reply With Quote
  #14  
Old December 15th, 2010, 05:50 PM
huck1974's Avatar
huck1974
Status: Offline
shane cates
94 d90
Member
 
Join Date: Feb 2007
Location: springfield mo
Posts: 890
Replacement stepper motor was bad also. Got one at the auto parts store from a 93 Chevy Astro van for $42. It fixed everything. I spent half a week over thinking the entire situation to realize I was stupid and it was what the computer said it was in the first place. I think I'll have a beer and try and kick my own ass now.
__________________
I love little baby ducks, old pick-up trucks, slow-moving trains, and rain
I love little country streams, sleep without dreams, sunday school in may,
And hay
And I love you too
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Code 17 Question loved90 Defender Technical Discussions 3 December 22nd, 2011 05:14 PM
yet another radio code question GliderKing Defender Technical Discussions 3 June 4th, 2005 05:06 PM
Code 48: Base Idle Speed? thug1313 Defender Technical Discussions 2 April 29th, 2005 11:52 PM
110 roof, ignition key code, windshield frame, etc... martym Defender Technical Discussions 7 February 24th, 2005 01:45 PM
D90 Stock Cassette Deck Security Code? Erik Defender Technical Discussions 4 December 9th, 2004 06:56 AM


All times are GMT -5. The time now is 03:18 PM.


Copyright