SVX Network Forums Live Chat! SVX or Subaru Links Old Lockers Photo Post How-To Documents Message Archive SVX Shop Search |
IRC users: |
#16
|
||||
|
||||
Re: ECU-Frequent Failures
Quote:
Or, just the boot -- but, since they don't sell them separately, they'll just have to put another whole coil on it. And, tell your dealership to have their Select Monitor checked out. It's possibly on the fritz! BEST OF LUCK!
__________________
Randy Johnson 3rd Registered Member 02-21-2001 First Member to Reach 10,000 Posts First to arrive at the very first Reading Meet Subaru Ambassador 1992 SVX PPG Pace Car Replica 110+k 1993 White Impreza L 240+K miles 2001 Legacy Outback Limited Sedan 250+K miles 2013 Deep Indigo Pearl Legacy 3.6R 49+K miles "Reading is my favorite Holiday" Mike Davis -- at Reading VI |
#17
|
|||
|
|||
Light
Hi Vexed, Although it sounds like you have found your problem, everyone always looks at the hot side. Make sure you have a good ground. Rust and corrosion will give weird results without telling you whats going on. Take care, BOBB
|
#18
|
|||
|
|||
ECU-Frequent Failures
The latest, for what it's worth:
The dealer acknowledged that perhaps his SVX scanner cartridge was faulty. They tried a Jaguar (another car they service and sell) scanner and did access the computer (finally!) but found no trouble code. They claimed to have checked cylinder #2 (per the Autozone scanner) but found no problem. And the CE light is still out. However, the slightly rough idle persists, soooooooo ....... I intend to add Techron to the next tank of gas on the theory that possibly the injector(s) are a little dirty. If anyone knows if this will cause any harm, please let me know. Thanks to all of you for your input! PS. They also said that Subaru "central" might finally be getting curious - they have recently asked the dealer for data regarding the last 3 repairs. Supposedly, they have never told the dealer what they have found wrong with the returned ECUs (assuming they made the attempt). |
#19
|
|||
|
|||
ECU-Frequent Failures
Bobb,
The ground connection at the battery looks good; however, I cannot readily see where or to what it connects. Any suggestions? |
#20
|
|||
|
|||
If the ECU is detecting misfire at cylinder #2, this could be a result of an ignition problem as others have said. The way to know for sure is to replace the spark plug AND THE COIL at cylinder #2.
Additionally, it could be a result of a fueling issue at that cylinder, or any of a list of other reasons. And as BOBB said, your ECU failures could certainly be the result of a grounding problem. The primary ground by the battery is one to check certainly, but there are many other grounds throughout the wiring harness which are critical to the proper operation of the vehicle and the health of its various electronic components. All of these grounds should be disconnected, cleaned, and refit to ensure proper grounding at each point. Even a properly connected ground can develop oxidation that leads to ground lift and thus problems that are VERY difficult to diagnose. The "grounding mod" that many here have ridiculed as hogwash is quite effective in older vehicles for this very reason. |
#21
|
|||
|
|||
Ground
Hi Vexed, Sorry I didn't get back to you till now as my wife and I just got back from the Reading meet. What Porter told you is the way to go. Follow the grounds starting at the battery and working your way out. Most grounds are just the wire and a sheet metal screw into the unit body of the car. Some times the screw is very hard to remove because of corrosion etc. in those cases I would replace the screw and clean up the groung wire connector with a fine grit sand paper and re=tighten. Remember, what ever it is can't hide forever. Take care, BOBB
|
#22
|
|||
|
|||
Re: ECU-Frequent Failures
Quote:
SOA doesn't usually tell the dealer what they found wrong with warranty parts, if that makes you feel any better Dave |
#23
|
|||
|
|||
ECU - Frequent Failures
The latest-latest:
After a little over 200 miles (not driving it much at the time), the CE light reappeared. Using the Jaguar scanner module again, the dealer pulled the code to replace the EGR valve. After a delay waiting for the part, the job is done and the light is out for now. Prior to this, I used a bottle of Techron which seemed to improve but not eliminate the rough idle. Since the EGR replacement, the idle is 99% smooth (perhaps as good as ever - I have become so sensitive that I am instantly aware of the slightest skip!). I haven't yet attempted to trace the grounds but will at least try. So ............ here's hoping! Thanks again to everyone for their help and support! |
#24
|
||||
|
||||
Yay, always glad to hear of long term problems getting resolved!
__________________
David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#25
|
||||
|
||||
I can't help that my intuition tells me that you have a faulty fuel injector ... (the voices tells me so )
All your problems summed up points me in that direction! /Sonny
__________________
Internal name: "SuperSonic" -92 ebony black with 170k KM *** -Stress is when you wake up screaming & you realize you haven't fallen asleep yet. *** |
|
|