CEL appear and disappearing

Green7mgte · 04-28-2012, 03:00 AM

http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

the black box is sort of hard to break unless one goes dicking with it.. trying to "clean" it's optics by spraying something in there and wiping it off.. most likely cause is a faulty wire. I'd start there.

helping to rule things out.. your ecu is not the culprit.. those things don't generally break.. So that just leaves.. your afm. or your afm circuit.. the box or its wires.. check the voltage and you have your answer

cre · 04-28-2012, 03:29 AM

Quote:

Originally Posted by Green7mgte

the black box is sort of hard to break unless one goes dicking with it.. trying to "clean" it's optics by spraying something in there and wiping it off.. most likely cause is a faulty wire. I'd start there.

My turn.... ROTFLMAO, I believe...

He's got an N/A which means he's got a VAFM (Vane AFM).... They are a wear component and do wear out.

But really 20+ years of vibration and bouncing around can take a significant toll on the KVAFM as well. Regardless, the issue here is most likely the AFM or the harness.

Green7mgte · 04-28-2012, 03:38 AM

missed that..
touche

agreed on the years of vibrations.
I always found it interesting that in the lexus the kvafm wires are held in place more securely then the poor supras..

cre · 04-28-2012, 03:50 AM

Quote:

Originally Posted by Green7mgte

I always found it interesting that in the lexus the kvafm wires are held in place more securely then the poor supras..

Can't say that I've witnessed that. They're just newer and more elastic.

Green7mgte · 04-28-2012, 12:57 PM

the one I have of a ls400 has a nice rubber boot over the connector instead of just the hard plastic the 7m has. also has a secure point directly to the side of the connector to stop wobbles.. they just look beefier. =)

cre · 04-28-2012, 07:17 PM

We're getting further and further off topic. I'd be interested in seeing pictures comparing the two though. Perhaps PM me or post a thread about it? I'm sure replacement plugs are still available for the Lex and it may be worth it to hunt down the part numbers for the connector, boot and pins for those who want/need to replace their worn out connector.

Joefishizzle · 04-30-2012, 02:48 AM

Well my question is with all these codes at once, doesn't that kinda hint to the ecu? I mean I replaced the gasket on the O2, checked the connector and wiring and still the code 21. I checked the connector on the afm, i also checked the resistance on the tps and afm and all values were off.

04-28-2012, 03:00 AM	#1
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx the black box is sort of hard to break unless one goes dicking with it.. trying to "clean" it's optics by spraying something in there and wiping it off.. most likely cause is a faulty wire. I'd start there. helping to rule things out.. your ecu is not the culprit.. those things don't generally break.. So that just leaves.. your afm. or your afm circuit.. the box or its wires.. check the voltage and you have your answer __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : Last edited by Green7mgte; 04-28-2012 at 03:04 AM.

04-28-2012, 03:38 AM	#3
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	missed that.. touche agreed on the years of vibrations. I always found it interesting that in the lexus the kvafm wires are held in place more securely then the poor supras.. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

04-28-2012, 12:57 PM	#5
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	the one I have of a ls400 has a nice rubber boot over the connector instead of just the hard plastic the 7m has. also has a secure point directly to the side of the connector to stop wobbles.. they just look beefier. =) __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

04-28-2012, 07:17 PM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	We're getting further and further off topic. I'd be interested in seeing pictures comparing the two though. Perhaps PM me or post a thread about it? I'm sure replacement plugs are still available for the Lex and it may be worth it to hunt down the part numbers for the connector, boot and pins for those who want/need to replace their worn out connector. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-30-2012, 02:48 AM	#7
Joefishizzle 3" Exhaust Join Date: Mar 2012 Location: California Posts: 105	Well my question is with all these codes at once, doesn't that kinda hint to the ecu? I mean I replaced the gasket on the O2, checked the connector and wiring and still the code 21. I checked the connector on the afm, i also checked the resistance on the tps and afm and all values were off.