Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #1  
Old 03-21-2009, 06:51 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default 3FE - Codes 12 and 41

So I finally got my Check Engine Light wired into the Pig and now that I can check codes, I find it showing 12 and 41.

Code 12 is for the RPM Signal (Distributor)
-No NE or G signal to ECU w/in 2 seconds after engine has cranked

Code 41 is for the Throttle Position Sensor
-Open or short circuit in throttle position sensor signal

Wow, I thought my issue was lying with fuel pressure...

My underlying issue was that the idle would break down once the engine got nice and heat soaked. I did an ignition system tune-up and advanced the timing. PO had it set retarded, I got a lot more power out of it, but idle issue remained. I thought maybe the computer really wants dizzy set for 7* BTDC, otherwise it throws code 12. So I re-set timing dead-on the BB and took it for a drive, re-check codes - first check showed all good. I switched off the key and checked again; 12 and 41.

TPS tested bad when I had the throttle body off, so I replaced it with one from parts store. I installed using FSM procedure, and then tested using procedure in FSM. I could not get the resistance values that I should have.

I guess it never hurts to look at actual data!

I have access to a 11/88 FJ-62 for parts. As far as I know, I can purchase dizzy and TPS from this rig.

I imagine a 11/88 62 is technically a '89?

My 3FE is an early '88, based on block #.

Does anyone know if '89 dizzy and TPS will fit a '88 3FE?

TIA,
Attached Images
  
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #2  
Old 03-21-2009, 07:07 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default

PS: is it common for 3FE dizzy to go bad?
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #3  
Old 03-22-2009, 12:27 AM
Uncle Ben's Avatar
Uncle Ben Uncle Ben is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Louisville, Colorado
Posts: 13,162
Send a message via AIM to Uncle Ben
Default

Quote:
Originally Posted by PabloCruise View Post
PS: is it common for 3FE dizzy to go bad?
Only if it's in a Piggy!
__________________
KUBN
Kevin
TLCA #3007
Northside!

Colorado Trail Patrol
Stay on the Trail!
I'm the God-fearing, gun-toting, American flag-waving, conservative you were warned about!
Quote:
Originally Posted by AxleIke View Post
I need an FJ40....
Quote:
Originally Posted by Red_Chili View Post
Cruisers are superior
Reply With Quote
  #4  
Old 03-22-2009, 12:46 AM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default

That's not funny!
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #5  
Old 03-22-2009, 10:00 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default

The FSM lists resistance specs for terminals NE and G of 140 to 180 ohms

My NE reading was 300 ohms - so clearly out of spec, but not by much?

Has anyone rebuilt their dizzy to fix NE or G signals?
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #6  
Old 03-22-2009, 11:35 PM
Chris's Avatar
Chris Chris is offline
Hard Core 4+
 
Join Date: Mar 2006
Location: Front Range
Posts: 970
Default

Quote:
Originally Posted by PabloCruise View Post
PS: is it common for 3FE dizzy to go bad?
TJ, my dizzy failed not long ago with no warning at all. ran to the store, all was well. Went out a bit later, nothing - code 12. The dizzy was dead. So, yes, it happens.

My research showed it's easier to replace than rebuild. $25 - $50 on 'mud.
Reply With Quote
  #7  
Old 03-23-2009, 06:44 AM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default

Chris, did you check resistance values on your original?

Did the parts store warranty the one you bought from them?
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #8  
Old 03-23-2009, 09:09 AM
Chris's Avatar
Chris Chris is offline
Hard Core 4+
 
Join Date: Mar 2006
Location: Front Range
Posts: 970
Default

I did and one of the checks came back with a zero reading, can't recall which so mine was obvious unlike yours appears to be. Rob (MaxsDad) gave me one he had so I just replaced it rather than rebuild or buy. Like I said you can pick one up on Mud for $25-$50 which is the way to go.

I have one that's my back up that you could borrow to see if that's your problem, you're welcome to pick it up if you're down this way. Since the last failure I decided it's good to carry a spare so it would just be a loaner though.
Reply With Quote
  #9  
Old 03-24-2009, 11:01 PM
PabloCruise's Avatar
PabloCruise PabloCruise is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Northern CO
Posts: 1,766
Default

Thanks Chris, I am working on lining up a replacement.

Hopefully this and TPS will solve my issues.
__________________
TJS

1978 FJ-40
1974 FJ-55 w/ 3FE

TLCA #10713

CO/WY Horsetooth 4 Wheelers Cruiser Club - Click Here!
Reply With Quote
  #10  
Old 03-24-2009, 11:05 PM
Crash's Avatar
Crash Crash is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Denver
Posts: 1,915
Default

Oleg at Irbis Off Road probably has one if you want to find a used dizzy locally.
Reply With Quote
Reply

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


All times are GMT -6. The time now is 11:11 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.