Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
2.216VTurbo
Gary, how do I check for that feedback voltage you mentioned, which pin *shouldn't* have that feedback?
I know some wideband setups will provide a "narrow band" output for stock computers, what if it is kicking out more than 0-1 volts? Watch the O2 sensor input going into the module.
Doubt it is the issue but better to double check.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Had a smec do this that was running for months then just up and quit while driving. Shut it down to pull over and any time you would turn on the car it would to the asd and tach needle mess. Replacement smec has been running fine since. No other changes to the car. Well except a new battery just after that event.
Quote:
Originally Posted by
A.J.
When I first started socketing boards, the first one I did caused the ASD relay to click on and off like crazy and the tach needle to jump all over the place. The Logic Module board ended up being bad. I don't know what caused it, my technique in removing the chip, static electricity, who knows. There's been other times I'd burn a chip and the data getting corrupt and causing the same issue. If the ASD relay is clicking I'd say you have a bad Logic Module this time or a bad chip.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Bad chip or chip connection might do it. Try removing and reinstalling the chip.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
I guess I'm pulling the battery, and the SMEC-again:o May as well add another ground strap to the fuel rail as well.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
2.216VTurbo
Brian the shoulder blade thing is called subscapular pain, classic spinal stenosis/herniated disc symptom.
The lower back is a herniated disc. I've seen my mri from 2013. That's manageable with proper low back support and posture.
This new one is weird. It's manageable too but if i hold something out in front of me with my left hand I can feel the muscles right next to my spine on the left side fall asleep.
If I lean forward slightly as if to wash dishes or something, both sides begin to hurt and the muscles knot up. Somethings getting pinched
Brian
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
2.216VTurbo
No Fx, just old man spine with degenerative changes:(
So If I am gonna just add a chassis ground to the SMEC, which pin/color wire should should I tap into?
There is a lotta red paint under the main negative cable ground under the batt tray so I'm gonna make it clean and shiny like Gus always said to:D
Adding a second chassis ground for the SMEC is a bad idea for reasons I said in my first post. The ASD relay clicking does sound like a bad ground. Try back probing your grounds with a test light to trouble shoot.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Stupid question but are you getting any codes out of the SMEC???
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Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
mock_glh
As for the injectors, our systems run low impedance. Hi impedance injectors are easier on the drivers and will run just fine.
How is running more resistance on a circuit easier on the drivers? I've never heard this before.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Because it lowers current given the same voltage according to ohms law. So less heat.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
marc
Adding a second chassis ground for the SMEC is a bad idea for reasons I said in my first post. The ASD relay clicking does sound like a bad ground. Try back probing your grounds with a test light to trouble shoot.
OK, I went back and reread all posts, I missed that part of your first Marc(Vicodin helps the pain but not great for clear thoughts:() I should be able to dig in with and confirm the grounds and other tips here in the next hour or so. Pathetic part is if I get it running tonight, I can't even drive it with the meds and inabililty to work the 568:(
Thanks to everyone that chimed in:grouphug:
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Turns out powder coated fuel rails look awesome! But don't act as much of a good ground. Removed the ground, scraped a little of the pretty black coating, reinstalled the bolt, fired right up. To bad it's too late to rescue that other power module board from the outgoing trash. Oh well. Curious how RedBox made it 1900 miles before said ground didn't conduct negative electrons...
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
2.216VTurbo
Turns out powder coated fuel rails look awesome! But don't act as much of a good ground. Removed the ground, scraped a little of the pretty black coating, reinstalled the bolt, fired right up. To bad it's too late to rescue that other power module board from the outgoing trash. Oh well. Curious how RedBox made it 1900 miles before said ground didn't conduct negative electrons...
Great news! Could you do me a favour now that it is working and check one of your old "bad" driver boards? A bad ground on a fuel rail will not "fry" a board, in fact, a transistor acts as a switch and turns the grounds on and off to the injectors to pulse fuel. I agree that grounds are tres important but the lack of a ground on your fuel rail did not fry your board. I would guess current overload and/or lack of cooling to the board kill them, if they are dead. I assume you have no active air flow through the SMEC casing
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Does no one ever use those grounding star washers that bite into the metal when they ae connecting grounds wires? They are in those drawers at hardware stores. They bite down to metal through paint.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
I had a breakdown about 6 months ago due to that ground on my Spirit. I figured it out AFTER towing it home and felt a little dumb, but the fact that i had to figure it out just proves it was a needed refresher. :p
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
I replace the screws with a JL audio ground stud and then bolt the ground to that. very secure is an understatement.
Quote:
Originally Posted by
wheming
Does no one ever use those grounding star washers that bite into the metal when they ae connecting grounds wires? They are in those drawers at hardware stores. They bite down to metal through paint.
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
going4speed
I replace the screws with a
JL audio ground stud and then bolt the ground to that. very secure is an understatement.
Looks very serious!
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
FARK! I give up:mad: Spritz, sprayed, detailed, armor all'd tires all with just one arm working and then figured I deserved a lil test drive for my efforts. 5-6 miles into my 'test loop' around the hood, running well then dead again, no spark, no fuel, ASD clicking like mad:( Ugh:faint:
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
R&R'd the battery, SMEC, and chip, checked grounds, added another from firewall to other side of fuel rail with no effect. No spark/fuel and clicky clicky from ASD. Anyone have a match:banghead:?
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
2.216VTurbo
R&R'd the battery, SMEC, and chip, checked grounds, added another from firewall to other side of fuel rail with no effect. No spark/fuel and clicky clicky from ASD. Anyone have a match:banghead:?
So Sorry to hear. did you have a moment to test voltages at the Pins I list above when cranking?and when the ignition is on? That will help to find the root cause
Re: ??!! Burned Out 2 SMEC's In 10 Miles !!??
Quote:
Originally Posted by
chromguy
So Sorry to hear. did you have a moment to test voltages at the Pins I list above when cranking?and when the ignition is on? That will help to find the root cause
I didn't because I *thought* it was solved, I will tho because I'm back to square one-ish, Thanks for the suggestions. So the harness needs to be connected and during cranking to get those values you listed, and I'm checking the back side of the connector(harness side?) then? I can pull a motor but electrical is my Achilles:(