#106736, "RE: SYMTECH FCD------------CEL" In response to Reply # 1
Originally posted by turbosrule the SYMTECH FCD apparently are not play n play and have to be fine tuned.
My FCD's have to be fine tuned, but I thought theirs were just a direct wire in and go, but I never researched theirs, but I know they are different then mine.
#106738, "RE: SYMTECH FCD------------CEL" In response to Reply # 2
Originally posted by eclipse982nrRST
Originally posted by turbosrule the SYMTECH FCD apparently are not play n play and have to be fine tuned.
My FCD's have to be fine tuned, but I thought theirs were just a direct wire in and go, but I never researched theirs, but I know they are different then mine.
what s ur end voltage reading?
I have mine set at the highest I can get it 4.54 its recommend 4.70
maybe I should have just went with a missing link!?
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
#106737, "RE: SYMTECH FCD------------CEL" In response to Reply # 1
Unfortunately, every car reacts to the addition of an FCD differently. All SymTech FCD's are pre-tuned, but in some cases fine-tuning may be necessary to suppress a check engine light (CEL)/malfunction indicator light (MIL).
#106739, "RE: SYMTECH FCD------------CEL" In response to Reply # 4 Jun-24-09 06:43 PM by turbosrule
Originally posted by VelocitaPaola Unfortunately, every car reacts to the addition of an FCD differently. All SymTech FCD's are pre-tuned, but in some cases fine-tuning may be necessary to suppress a check engine light (CEL)/malfunction indicator light (MIL).
Could it be this particular unit that was sent?
I was running Hahn's for years with no CEL
I'm reading 4.54 any lower and it runs badly!?
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
#106743, "RE: SYMTECH FCD------------CEL" In response to Reply # 5 Jun-26-09 08:27 AM by turbosrule
Here's a reply I got from Symtech tech support quote~We set them to 4.58V from the factory, but 4.59V or 4.60V may be necessary to avoid a CEL.~unquote.
Now my problem is Symtech shipped the FCD with the trim screw turn up as far as it would go (pegged clockwise) which I am reading 4.54V! I can only go one way (turn it down!)
Unsure why Symtech would tell me to tune-up to increase the voltage when their FCD came out of the box turned (tuned)all the way up!?
If anyone here has had similar problems or can offer some suggestions Please do.
Other wise I will post the out came for future referents.
THANKS!!!
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
#106756, "RE: SYMTECH FCD------------CEL" In response to Reply # 6
Originally posted by turbosrule Here's a reply I got from Symtech tech support quote~We set them to 4.58V from the factory, but 4.59V or 4.60V may be necessary to avoid a CEL.~unquote. Now my problem is Symtech shipped the FCD with the trim screw turn up as far as it would go (pegged clockwise) which I am reading 4.54V! I can only go one way (turn it down!) Unsure why Symtech would tell me to tune-up to increase the voltage when their FCD came out of the box turned (tuned)all the way up!? If anyone here has had similar problems or can offer some suggestions Please do. Other wise I will post the out came for future referents. THANKS!!!
UPDATE---Symtech suggested to double check 12V source. this was coming lose and was corrected. I now can adjust voltage. I tried 4.58V,4.59V,4.60V,4.66V,4.69V to no avail NO fuel cut but once I shut her down and restart a glorious Illuminated CEL Code 14 appears!
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
#106760, "RE: SYMTECH FCD------------CEL" In response to Reply # 7
I was browsing threads and found this.
Originally posted by DarkOne Some cars, usually 96's, will get it regardless of how squeeky clean everything is. They get it because the ECU is programmed to do some weird MAP signal verification agaist some other parameters such as throttle position and engine rpm, and the SAFC can throw that out of whack.
Maybe this is my problem? Although I'm not running the sfac sold it years ago!
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
#106762, "RE: SYMTECH FCD------------CEL" In response to Reply # 9 Jun-27-09 05:04 PM by VelocitaPaola
If your +12V connection was faulty, it's very likely your other connections are too. Even connections that are overtly fine may introduce enough resistance into the circuit to throw off your PCM.
On the other hand, if you are one of the unfortunate few with a finicky PCM, no FCD, no matter the brand, can work for you without generating a CEL.
#106766, "RE: SYMTECH FCD------------CEL" In response to Reply # 10 Jun-27-09 10:15 PM by turbosrule
Originally posted by VelocitaPaola If your +12V connection was faulty, it's very likely your other connections are too. Even connections that are overtly fine may introduce enough resistance into the circuit to throw off your PCM. On the other hand, if you are one of the unfortunate few with a finicky PCM, no FCD, no matter the brand, can work for you without generating a CEL.
Thanks for the reply I believe it to be the latter.
The 12v was the only wire that was not soldered and shrink wrapped. I guess I could just ignore the CEL since I was NOT getting fuel cut this could have been a 100 towards symtech MS
Hahn,Wiseco,Eagle,MSD,TurboXs K&N,mopar,AEM,Greddy,Vortex,apexi and a bunch of other stuff..
19:22:36 ‹hazard_eclipse› btw disclaimer: I am NOT hazardeclipse 19:23:10 ‹ez› 19:14:00 ‹hazard_eclipse› i honestly hate yellow. 19:23:25 ‹hazard_eclipse› lol good you saw that 19:23:55 ‹ez› you should put that in your sig
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