Hi Guys (and Dolls)
My Check Engine light started coming on a while back
Took it to my nearby ex factory Sube mechanic and he showed me how to
connect that little wire under the dash and read the code flashes
I was getting a Code 22 - Knock Sensor
And he had a convenient factory knock sensor which I bought
Well, I managed to get the old one out after removing only a couple
of vacuum hoses
Then, stupidly, I tried installing the new sensor, after attaching it
to the wire from the ECU which was already pretty brittle, but I
promised myself I would be careful...I didn't want to try connecting
the wires in the limited space I would have after installing the
sensor
Well the damn wire from the ECU broke right smack at the connector
attachment...nothing to splice to
So my mechanic gave me a free ticket into Ecology Auto Wrecking (pic-
a-part), and I found a couple of Legacys that had my wire, so for a
grand total of two dollars, I was ready to rumble.
So without much room to work with I spliced the new old junkyard wire
to what was left of my wire coming out of the firewall to the ECU.
Now this little wire is actually a mini coax, and I was careful to
check out how the factory installation was done because on my car the
outer wire seemed like it was broke off and just hanging out in the
air.
But sure enough, on both the junkyard cars, that wire goes nowhere,
and my factory service manual shows the wire terminating at the ECU
into two plugs, but the outer wire called the shield, goes nowhere,
not even to ground, so I guess it's a radio interference thing.
So I tried to be real careful, when I spliced the two wires (actually
four wires), to keep the inner and outer wires separated with heat
shrink tubing.
But when I got done the C.E. light was still on...shit
So I plugged in the code flasher wire under the dash and NOW it's
going crazy and I'm getting the following sequence;
22 - 11 - 14 - 15 - 16 - 17 - 22 - 11 - 14 - 15 - 16 - 17 - 22 -
repeat
Ideas anyone?
Larry ssspoon Witherspoon
92 Turbo Legacy
562-982-7720
310-439-4269
Witherspoon Seeks ECU Code Flash Advice
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Witherspoon Seeks ECU Code Flash Advice
Larry Witherspoon
ssspoon@aol.com
Torrance (Los Angeles)
92 Turbo Legacy Wagon
310-429-4269
ssspoon@aol.com
Torrance (Los Angeles)
92 Turbo Legacy Wagon
310-429-4269
Wow...check all the ECU plugs, make sure all 3 are in tight.
Re. the shielding; those shields are only connected at one end, to provide a single path to dissipate any energy. Those are very low-voltage signals carried by those wires, so any outside interference (ignition, mostly) will screw up the signals.
Re. the shielding; those shields are only connected at one end, to provide a single path to dissipate any energy. Those are very low-voltage signals carried by those wires, so any outside interference (ignition, mostly) will screw up the signals.
Jerry
'04 Passat GLS 4Motion 5MT (Subaru by VW)
'86 Vanagon Syncro Camper Garage Queen
'04 Passat GLS 4Motion 5MT (Subaru by VW)
'86 Vanagon Syncro Camper Garage Queen
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- Location: Torrance (Los Angeles), California
Witherspoon Seeks ECU Code Flash Advice
Thank you JC I will recheck
Ssspoon
Ssspoon
Larry Witherspoon
ssspoon@aol.com
Torrance (Los Angeles)
92 Turbo Legacy Wagon
310-429-4269
ssspoon@aol.com
Torrance (Los Angeles)
92 Turbo Legacy Wagon
310-429-4269
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Who is this Larry Witherspoon guy? He's got a really old join date but I have never seen him post before?
Welcome back Larry. As mentioned, I would clear the ECU and see what happens...
![Razz :P](./images/smilies/icon_razz.gif)
Welcome back Larry. As mentioned, I would clear the ECU and see what happens...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
He's a nooobMatt Monson wrote:Who is this Larry Witherspoon guy? He's got a really old join date but I have never seen him post before?![]()
![Razz :P](./images/smilies/icon_razz.gif)
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm