Trouble With Codes

naadomail · 10-09-2007, 03:24 PM

As many of you know, I have recently invented/equipped the "Yellow Hose Of Texas" mod on my runner. In the process I accidentally started my truck without the MAF sensor plugged in. Problem is, I cannot get the codes to clear. I pulled the EFI relay and left it out for 15 minutes, put it back in and they were still there. I left the EFI relay out for 2 hours, still there. Any ideas??

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fillsrunner4 · 10-09-2007, 03:26 PM

undo the battery and turn the key a few times and plug the battery back up. try that

olharleyman · 10-09-2007, 03:34 PM

Quote:

Originally Posted by fillsrunner4

undo the battery and turn the key a few times and plug the battery back up. try that

x2 undo the battery and rub the cables together then hook battery back up Rubbing the cables together should clear all power and inturn clear the codes stored. It will also make your truck relearn your driving style and adjust the computer to it.

n4ynu1010 · 10-09-2007, 03:37 PM

Maybe you have a bad wire or MAF Sensor and every time you key the thing it is regenerating code , EFI removed for 30 secs should be enough , and battery disconnected for a few minutes as well , may prove worthwhile to try the "Turn on Ign Key" I guess for GP but ahould have cleared

mr toytech · 10-09-2007, 05:32 PM

you should remove the efi fuse, not the relay.30 sec should do it unless there is an actual problem.

naadomail · 10-09-2007, 05:59 PM

Ended up touching the battery cables together. Worked fine codes are clear and we'll see if they pop up again. Thanks all. Also the driving dynamics did change a little, barely noticable. Not sure if it was for the better or worse, but different none the less.

thook · 10-10-2007, 12:01 AM

Bear in mind, sometimes if one is messing the AFM harness a lot...taking it on and off.....the wires/terminals can work themselves loose from the connector and not get a connection when you plug the connector back in. So, if ever in doubt, it's a good thing to check for.

n4ynu1010 · 10-11-2007, 07:33 PM

Quote:

Originally Posted by thook

Bear in mind, sometimes if one is messing the AFM harness a lot...taking it on and off.....the wires/terminals can work themselves loose from the connector and not get a connection when you plug the connector back in. So, if ever in doubt, it's a good thing to check for.

Very few take the time to suspect that "King of Illusion" .............the broken wire within the insulation hidden and all the while they pull their hair out and check all the controls again for the 3rd time

.

Targetnut · 10-11-2007, 07:52 PM

Do you have a capacitor installed for your stereo?

If so it will store enough charge to keep your ECM memory alive with the battery disconnected for quite some time. Touching the cables together would have discharged it.

n4ynu1010 · 10-12-2007, 06:01 AM

Quote:

Originally Posted by naadomail

Ended up touching the battery cables together. Worked fine codes are clear and we'll see if they pop up again. Thanks all. Also the driving dynamics did change a little, barely noticable. Not sure if it was for the better or worse, but different none the less.

Well when you reset the ECM it will go into a re-learn mode for a while so the motor running/idling should improve over a bit of time driving , hope your code free !!

10-09-2007, 03:26 PM	#2 (permalink)
fillsrunner4 Registered User Join Date: Jun 2004 Location: Sammamish, wa Posts: 2,687	undo the battery and turn the key a few times and plug the battery back up. try that __________________ 94' toyota 4runner (Many a change!) purchased bone stock, NOW... SAS, 37x14" Iroks, Rear Leafs, 5.29's , Air locked front, Welded rear, 4.3L, Chevy V6 , 5spd swapped, dual T/C's MC10R10, flatbelly with custom skids, sliders, and so much more. Might as well start reading this if ya want know more Fillsrunner4 3.4crawler Build Thread Fillsrunner4.3 crawler (Part Two) build thread

10-09-2007, 03:37 PM	#4 (permalink)
n4ynu1010 Registered User Join Date: Sep 2007 Location: Richmond , Va / Henrico Co. Posts: 1,062	CEL Code Maybe you have a bad wire or MAF Sensor and every time you key the thing it is regenerating code , EFI removed for 30 secs should be enough , and battery disconnected for a few minutes as well , may prove worthwhile to try the "Turn on Ign Key" I guess for GP but ahould have cleared __________________ Guy '91 ExCab Dlx Longbed/3VZE-Fast/Stock 2WD/5spd Manual '95 GMC Jimmy SLS 4WD/4.3L Vortech/Euro Susp and Motor Package/Tow Package F.A.I.T.H. Forsaking All I Trust HIM Matthew 19,20 : 19 I say again unto you,that if two of you shall agree on earth as touching anything they shall ask,it shall be done for them of my Father which is in Heaven 20 For where two or three are gathered in my Name,there Am I in the Midst of them

10-09-2007, 05:32 PM	#5 (permalink)
mr toytech Registered User Join Date: May 2006 Location: kc mo Posts: 532	you should remove the efi fuse, not the relay.30 sec should do it unless there is an actual problem. __________________ my truck new my truck now with TRD wheels and exhaust 93 toyota 3.0 manual trans. jeeps are so cute even barbie has one!!!

10-09-2007, 05:59 PM	#6 (permalink)
naadomail Registered User Join Date: Aug 2007 Location: Texas Posts: 114	Ended up touching the battery cables together. Worked fine codes are clear and we'll see if they pop up again. Thanks all. Also the driving dynamics did change a little, barely noticable. Not sure if it was for the better or worse, but different none the less. __________________ '95 4Runner SR5 running 31x10.5's. Installed the "YELLOW HOSE OF TEXAS MOD" Stripped the running boards and evened out the rear with spring spacers

10-11-2007, 07:52 PM	#9 (permalink)
Targetnut Registered User Join Date: Jul 2005 Location: Manassas, VA Posts: 543	Do you have a capacitor installed for your stereo? If so it will store enough charge to keep your ECM memory alive with the battery disconnected for quite some time. Touching the cables together would have discharged it. __________________ Targetnut don't talk about it, just do it! Precision Import Service '93 2WD 22RE, Ported w/os valves, custom intake manifold, crane cam,Megasquirt, 295cc injctrs, Supra fuel pump, adj fuel pres reg, 70mm throttle, LCE header, V6 Taco cat, 14lb flywheel, Kevlar clutch, W58 and short shifter, 4.10 gears w/Truetrac, drop spindles and blocks, 245/50-16 Yokos on 16x8 wheels, 4WD fenders, bumper, and valence, skinned tailgate

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