Rising Sun Member Forums  

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

Reply
 
Thread Tools
  #1  
Old 08-31-2011, 04:46 PM
Snowrun's Avatar
Snowrun Snowrun is offline
Rising Sun Member
 
Join Date: Aug 2009
Location: Denver,CO
Posts: 450
Default 94 Fzj-80 Failed Emissions

So here is the readout. I have a long list of things to check Treeroot recommended today that may help with isolating the issue.
1. Checking the throttle position sensor.
2. 02 sensors
3. ECT (engine coolant temp) sensor.
4. Temps on the cats

If figured while I was in there I might as well ask for anymore suggestions of things I should check.

The truck is a 94 fzj 80 here are the particulars.
1. New O2 sensors 8 months
2. New head gasket (OEM) 1.5 years ago.
3. Valves all adjusted a few months back
4. Oil change that morning with mobile one 5w30 synthetic
5. Drove for 50 miles on the highway before going to the test station
6. Ran 87 octane gas
7. Ran a bottle of Lucas deep clean fuel system through on the prior tank.
8. I am currently running 33 inch Toyos
9. Recently washed the air filter

Anything to add to the test list or suggestions would be appreciated. I have been reading through all of the historical threads and I am pretty convinced it is cats, however you guys might see something different in the data.


Thanks
Attached Images
  
__________________
'94 FZJ-80 Locked
'99 LX 470
TLCA#21035
My Cruiser videos on Youtube
Reply With Quote
  #2  
Old 08-31-2011, 07:30 PM
nuclearlemon's Avatar
nuclearlemon nuclearlemon is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: denver
Posts: 5,696
Default

do people not listen to me....2 bottles of heet on a half a tank of fuel.

i was high on the same thing the first time and it was the only time i've ever gone through emissions without using heet.

of course, i was a heck of a lot closer on the ranges.
__________________
ige tlca #1431
Reply With Quote
  #3  
Old 08-31-2011, 08:15 PM
Snowrun's Avatar
Snowrun Snowrun is offline
Rising Sun Member
 
Join Date: Aug 2009
Location: Denver,CO
Posts: 450
Default

Red or yellow?
__________________
'94 FZJ-80 Locked
'99 LX 470
TLCA#21035
My Cruiser videos on Youtube
Reply With Quote
  #4  
Old 08-31-2011, 09:06 PM
treerootCO's Avatar
treerootCO treerootCO is offline
Rising Sun Member
 
Join Date: Aug 2005
Posts: 4,390
Send a message via AIM to treerootCO
Default

Red...I thought we discussed this?

You also swapped the charcoal canister

When I go to the emissions place, I over inflate the tires for less rolling resistance, change the oil, install new air filter, time the engine to spec, make sure all electrical devices are off for them to test, open all windows and sunroof(they don't throttle it as much if they can hear the engine/tires), drive a minimum of 50 miles on a new tank of gas, empty out the rear drawers, remove the spare tire, and add two bottles of Heet (Red bottle) to the tank. I also have a new gas cap sitting on the shelf because that really burns me when I pass and they fail me on the cap.
__________________
aka Mike D.----->Bio Page KDøGWY
“He who goes unarmed in paradise had better be sure that that is where he is.”—James Thurber
"Its better to be thought a fool rather than to speak up and remove all doubt." - Lincoln
pride is ego, the word I had lost was dignity. The quality or state of being worthy of esteem or respect.
Ptarmigan build thread - 95FZJ80
www.root45.com
www.risingsun4x4club.org

TLCA #14133

Reply With Quote
  #5  
Old 08-31-2011, 10:27 PM
Snowrun's Avatar
Snowrun Snowrun is offline
Rising Sun Member
 
Join Date: Aug 2009
Location: Denver,CO
Posts: 450
Default

Quote:
Originally Posted by treerootCO View Post
Red...I thought we discussed this?
Some people like ketchup on a hot dog and some people like mustard. I thought may be you didn't like mustard.

__________________
'94 FZJ-80 Locked
'99 LX 470
TLCA#21035
My Cruiser videos on Youtube
Reply With Quote
  #6  
Old 09-02-2011, 01:06 AM
Snowrun's Avatar
Snowrun Snowrun is offline
Rising Sun Member
 
Join Date: Aug 2009
Location: Denver,CO
Posts: 450
Default

Well I started the list of tests and so far I have three failures. The EGR VSV was stuck closed and the impedance was at 64 ohms instead of the 30-34 range the FSM recommends. Also the EGR vacuum modulator was not functional at all. The diaphragm will not move, of course it also failed the FSM tests. Then last and hopefully the final failure was a crunchy hose that went from a T junction into the intake manifold had a number of cracks that rendered it useless.
I should have it put back together in the AM and tested by the end of the day.
Wish me luck.
__________________
'94 FZJ-80 Locked
'99 LX 470
TLCA#21035
My Cruiser videos on Youtube

Last edited by Snowrun; 09-02-2011 at 07:09 AM.
Reply With Quote
  #7  
Old 09-02-2011, 07:14 AM
treerootCO's Avatar
treerootCO treerootCO is offline
Rising Sun Member
 
Join Date: Aug 2005
Posts: 4,390
Send a message via AIM to treerootCO
Default

Let me know if you need any help. If you have the clamshell off, test the voltage on the ECT. I would also check the TPS to make sure it is within spec. We still need to determine why your engine runs so hot as well. Did you want to redo your fan clutch? We can run the Robby test on it to see if it moves any air.
__________________
aka Mike D.----->Bio Page KDøGWY
“He who goes unarmed in paradise had better be sure that that is where he is.”—James Thurber
"Its better to be thought a fool rather than to speak up and remove all doubt." - Lincoln
pride is ego, the word I had lost was dignity. The quality or state of being worthy of esteem or respect.
Ptarmigan build thread - 95FZJ80
www.root45.com
www.risingsun4x4club.org

TLCA #14133

Reply With Quote
  #8  
Old 09-02-2011, 08:10 AM
Jacket's Avatar
Jacket Jacket is online now
Rising Sun Member
 
Join Date: Feb 2007
Location: Lafayette
Posts: 3,964
Default

Quote:
Originally Posted by treerootCO View Post
I also have a new gas cap sitting on the shelf because that really burns me when I pass and they fail me on the cap.
Yea - that happened to me last time with the 80. I passed all the emissions tests, and then he decided my gas cap wasn't sealing. Sucks to have to go back through the whole process for a stinkin' gas cap....
__________________
- Matt
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock
Reply With Quote
  #9  
Old 09-02-2011, 09:31 AM
wesintl's Avatar
wesintl wesintl is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: in da house
Posts: 7,500
Send a message via AIM to wesintl
Default

last time I got the renewal in the mail and I passed the roadside tests. Now I have to take it in this month. Not looking forward to it.
__________________
See you on the trail
WØREK
Couple o' FJ40's, BJ70, UZJ100, TDI 66FJ40,82FJ60,97FZJ80
TLCA#4180
Reply With Quote
  #10  
Old 09-02-2011, 12:31 PM
Snowrun's Avatar
Snowrun Snowrun is offline
Rising Sun Member
 
Join Date: Aug 2009
Location: Denver,CO
Posts: 450
Default

Well it failed again. (yes i used 2 bottles of red HEET). Also checked the timing and it was at 3degrees with the paper clip in.
So it looks like the VSV and vacuum module had the most effect on HC.
Being that the 94 has parallel CATS what are the thoughts on swapping out just one CAT? Also I noticed on this print out the printer shifted the red line to the left a bit.
(I will probably swap out the other after my next payday)

BTW I really like the testing station in Dacono. It has two four wheel drive lanes and the frontage road right up to the front of the building is 55 mph so you can keep your CATS hot.
Attached Images
  
__________________
'94 FZJ-80 Locked
'99 LX 470
TLCA#21035
My Cruiser videos on Youtube

Last edited by Snowrun; 09-02-2011 at 02:47 PM.
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 11:42 AM.


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