 Code 14, rough idling, misfiring sub 2000 rpm, Fixed. Odd issue. |
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 Jul 21, 2009 - 11:30 PM
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 Enthusiast  Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%)  |
OK guys. I bought a 1995 ST recently. its always idled rough when warm, but when i first start it, it runs fine. well lately its gotten worse so i replaced the WHOLE dizzy w/ a known good one, plugs/wires(new toyoa), and throttle body. Helped for awhile then the issue returned. It got steadily worse till tonight where it completely died on me while driving. wouldnt start. no spark at all.. i swapped dizzys out again and it reverted back to the original random misfires.
Replaced:
So i checked the CEL codes and i pulled a code 14: Ignition Signal - no IGF signal to ECU 4 times in succesion. Not the ignitor, cant be since 2 had the same issue. i wiggled the wiring around and no changes. Resetting the ECU helps for about 20 min. Wiring or the ECU is the only other things i can think of unless there's something i missed. Any suggestions? This post has been edited by stephen_lee: Jul 30, 2009 - 1:55 PM -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Jul 22, 2009 - 1:07 AM
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 Enthusiast Joined Oct 10, '06 From Greensburg,PA Currently Offline Reputation: 27 (94%) |
so check the commons first...
plugs gapped right timing right for dizzy this is a big one... CHECK ALL YOUR GROUNDS, CHECK ALL YOUR POWER FEEDS including fuses sounds like you have a bad connection somewhere... you wouldn't throw that code if it was an ecu issue... broken wire would give you more problems than random misfires... my money is on corroded ground... start at the dizzy and work your way back... ignitor has its own ground... check it... battery ground... whole deal... make sure your fuses don't have a partial burn This post has been edited by pittfirefighter: Jul 22, 2009 - 1:07 AM -------------------- Breaking Axles...
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Jul 22, 2009 - 8:06 AM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
QUOTE (pittfirefighter @ Jul 22, 2009 - 1:07 AM)  so check the commons first... plugs gapped right timing right for dizzy this is a big one... CHECK ALL YOUR GROUNDS, CHECK ALL YOUR POWER FEEDS including fuses sounds like you have a bad connection somewhere... you wouldn't throw that code if it was an ecu issue... broken wire would give you more problems than random misfires... my money is on corroded ground... start at the dizzy and work your way back... ignitor has its own ground... check it... battery ground... whole deal... make sure your fuses don't have a partial burn plugs are supposed to be gapped from toyota, at least thats what they said when i bought it. timing is wayy advanced right now to keep it running. Weird thing is I'm a huge fan of "check your grounds first," yet i havent done so myself lol. I'll UPGRADE all my grounds tonight, and i know how/where to put some large cable lol. I'll update whether or not that helped the issue. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Jul 22, 2009 - 1:39 PM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
Grounds upgraded to 2 and 4 gauge and STILL having issues
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Jul 22, 2009 - 4:32 PM
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 Enthusiast Joined Jan 17, '08 From JB MDL, NJ Currently Offline Reputation: 30 (100%) |
K, im staring at this big ol book. Word for word here...Open or short in IGF (ignition confirmation signal.....to the ECM) or IGT (ignition signal....to the igniter) / Igniter / ECM. You could check for opens/shorts in the harness/connector on your ECM, but that probly wont be that fun. Probly the lease paingful would be to check the igniter connector and body ground (9-14 v) or the ignition coil (primary resistance cold: 0.36-0.55 ohms, hot .45-.65 / secondary cold 9.0-15.4k ohms, hot 11.4-18.1k ohms)
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Jul 24, 2009 - 12:56 PM
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 Enthusiast Joined Jan 25, '06 From MN Currently Offline Reputation: 19 (100%) |
I had the same problem and Cel code on my car turned out the NEW dizzy I bought was defective and yeah your car dieing on you while driving is not fun....
-------------------- "To Protect And To Serve The Wealthy" -POLICE
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Jul 30, 2009 - 9:16 AM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
QUOTE (Spider77 @ Jul 22, 2009 - 4:32 PM) K, im staring at this big ol book. Word for word here...Open or short in IGF (ignition confirmation signal.....to the ECM) or IGT (ignition signal....to the igniter) / Igniter / ECM. You could check for opens/shorts in the harness/connector on your ECM, but that probly wont be that fun. Probly the lease paingful would be to check the igniter connector and body ground (9-14 v) or the ignition coil (primary resistance cold: 0.36-0.55 ohms, hot .45-.65 / secondary cold 9.0-15.4k ohms, hot 11.4-18.1k ohms) Yes, I know. I was staring at the BGB too. I molested, poked, tested, and shook that harness to the point that I was afraid that I would damage the harness lol. The Dizzy(and all ignition components) was fine I know, I tested them, too. And after weeks of looking I finally found my issue. THE INJECTOR HARNESSES WERE SWITCHED AROUND. Cyl #'s 1 && 2 were switched around. The 7a does NOT use sequential injection, it fires TWO injectors at once, cyls # 1&3, then cyls # 2&4. So that caused the low RPM random misfires, bad MPG, and just rough running in general, yet at higher RPMs (above 1600-2000 RPM) it felt like it was running fine. SO my assumption is that since the fuel wasn't being sucked into the cyls the ECU expected, it evaporated and was sucked into the other cyls, causing the random misfires, and then the ECU had to over compensate to get the affected cyls(or average A/F) to the right A/F ratio, causing poor MPG. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Jul 30, 2009 - 4:44 PM
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 Enthusiast Joined Aug 2, '05 From Guam Currently Offline Reputation: 15 (100%) |
how did that happen in the first place?
-------------------- 94 Celica GT
|Toyota OEM Japan|Toyota Racing Development|Tom's|Competition Clutch|5Zigen|Apexi| |Laille/Beatrush|Magnecor|Denso|Royal Purple|Optima|PIAA|PW JDM|Megan Racing|Nitto| |Work|Greddy|Samco|Project Mu|H&R|Gates|Moog|Rota|Yokohama|Epman|1320|Upgr8 04 Celica GT |Toyota OEM Japan|Toyota Racing Development|Tein|BC Racing|Greddy| |
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Jul 30, 2009 - 10:32 PM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
QUOTE (trdproven @ Jul 30, 2009 - 4:44 PM) how did that happen in the first place? previous owners not knowing what they're doing I assume. Or a super-****ty mechanic. It runs so smooth now. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Jul 31, 2009 - 10:53 AM
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 Enthusiast Joined Dec 19, '07 From tx Currently Offline Reputation: 22 (100%) |
QUOTE (stephen_lee @ Jul 30, 2009 - 10:32 PM) QUOTE (trdproven @ Jul 30, 2009 - 4:44 PM) how did that happen in the first place? previous owners not knowing what they're doing I assume. Or a super-****ty mechanic. It runs so smooth now. Bring it up to Houston and let's get to modding  I got GT stuff everywhere and I need work done - we'll make that easy
--------------------  ENGINE: '93 RC 3S-GTE/WRC CT-20b [18-20PSI] PERF: TRD/HKS/ARP/NGK/MSD/ACT/Blitz/STRI/APEX'i/TwosRus/GReddy/Magnaflo/KOYO SUSP: Tein/Bilstein/SusTech/ INT: SS-III SEATS/Toyota Hyper Sports EXT: WRC/TRD/404 QUOTE (lagos @ Aug 25, 2010 - 10:13 AM) Its a safety feature so that people like you don't end up killing themselves or everyone around them. Slow down Paul Walker. 6GC Chat - Go there: [url="http://www.griffgirl.com/forum/chat/index.php[/url] |
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Jul 31, 2009 - 4:55 PM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
QUOTE (DEATH @ Jul 31, 2009 - 10:53 AM) QUOTE (stephen_lee @ Jul 30, 2009 - 10:32 PM) QUOTE (trdproven @ Jul 30, 2009 - 4:44 PM) how did that happen in the first place? previous owners not knowing what they're doing I assume. Or a super-****ty mechanic. It runs so smooth now. Bring it up to Houston and let's get to modding I got GT stuff everywhere and I need work done - we'll make that easythis is the ST. the GT is still not running 
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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