92 Legacy SS ignition issue
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- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
92 Legacy SS ignition issue
Alright Ive got a 92 Legacy SS thats got some ignition issue. Started it up a few days ago after work, ran for a couple minutes to warm up then just died like I turned the ignition off. I tested the coilpack and ignitor, their all fine. Fuel pump is working and the filter isnt clogged. So at this point im thinking the ECU. Im getting the same voltage from both the ignitor and the coilpack, when I probe the middle wire on the coilpack the fuel pump turns on. Has anyone had issues like this? This is the second ECU Ive had in this car in the last 4 years and I find it odd that the ECU crapped out again. Please let me know if youve got an idea whats going on.
Thanks,
Grant
Thanks,
Grant
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
Hi,
When my MAF died, the car would run and then die when coming to a stop and other random times.
GL,
Td
When my MAF died, the car would run and then die when coming to a stop and other random times.
GL,
Td
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
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- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
interesting, i hadnt thought of that. i do have an extra one, ill plug it in and see if that could be it. thanks
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
I swapped out the MAF and that wasnt the issue. I really hope its not the ECU but at this point im going to flash the codes and see what I come up with. Ive been trying to avoid doing that but at this point i dont have a choice I dont think
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
Can you elaborate what you mean by "when I probe the middle wire on the coilpack the fuel pump turns on."
Are you just using a multimeter to read voltage or are you using one of those test probes that is applying 12v to things?
Are you just using a multimeter to read voltage or are you using one of those test probes that is applying 12v to things?
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
im using a test probe
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
That middle wire comes from the ignition relay and also supplies power to the ignitor, fuel pump, and a few other sensors. So if you put 12v to it with the test probe, having the fuel pump turn on would be expected.
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
thats good to know, Im 99.99% sure the ecu went bad. Is there anyway fix that issue or is the ecu just weak on these cars. Ive traced, tested and checked all the ignition wires for poor voltage and continuity and they all seem to check out.
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
That's weird....because these ECU's aren't typically known for failures.
Are you not getting spark, is that the only issue? Are you getting fuel? If it's just spark, there may be an issue with a component in your car that is frying the ECU. Is the igniter & coil pack all stock?
I can see one ECU being a fluke, but two that would point to something else that is causing them to fail.
Are you not getting spark, is that the only issue? Are you getting fuel? If it's just spark, there may be an issue with a component in your car that is frying the ECU. Is the igniter & coil pack all stock?
I can see one ECU being a fluke, but two that would point to something else that is causing them to fail.
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
I thought its weird also that 2 ecus would fail. Yeah its just not getting spark. There is a signal/voltage going to the ecu but none coming from. The ignitor and coilpack are stock but I got a new coilpack plugged it in and nothing. I also got a working ignitor and nothing so thats what leads me to believe the ecu is bad
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
the only time im getting fuel is when I probe that midde pin on the coilpack with 12v. I know the fuel pump is good, far as I know the ecu isnt giving the signal for fuel pump to turn on. I saw some corrosion on the casing of the ecu in the car, it wasnt on the actual circuit board though. Who knows how many miles the ecu had on it when it was replaced about 2 years ago
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
my battery was decently corroded though as well as some of the connectors that sit right behind the battery, I cleaned those up to eliminate the slight chance that had anything to do with it
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
Does the CEL come on when you put the key in the ON position? If so, then the ECU should still be functional. If it's not on, I would double check to see if you're getting power to the ECU.
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
no the CEL doesnt come on when the key is in the ON position, I did double check that power is getting to the ecu.
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
how does your crank and cam sensor check out? and what about your timing? if i remember right if ya belt slipped could cause no spark because the timing is off
Re: 92 Legacy SS ignition issue
If the CEL is not on with the key in the ON position and there is power to the ECU, then it's possible the ECU is dead.
Also have you checked all the fuses to ensure they're good.
Do you know what your voltage was reading at with the car running? I'm wonding if a bad voltage regulator in the alternator may be causing excessively high voltage and frying ECU's.
Also have you checked all the fuses to ensure they're good.
Do you know what your voltage was reading at with the car running? I'm wonding if a bad voltage regulator in the alternator may be causing excessively high voltage and frying ECU's.
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
I did check the cam and crank sensors and they seem to be fine. Ill pull the timing cover off so see if by some random possibilty the timing belt popped off. The timing belt was changed at the correct interval. Im not sure what the voltage reading was when it was running so you could be right about a bad voltage regulator in the alternator. Ill have a working ecu on wednesday so Ill post what I find out. Thanks for all your suggestions
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
oh I forgot that i did check the fuses and they seem to be good and apparently I didnt not check the sensors fully, I checked the resistance on them
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
alright well I got it running, there was a loost/bad wire on the cam or crank sensor I forget which one it was. Now Im not sure if the ecu I got is for a turbo or non turbo because its not wanting to get on boost. Im going to check a few more things out to make sure that the ecu is the only possibility
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
What's the ECU part #?
If the engine is running, it's more than likely a turbo ECU, because the crank & cam sensor wiring is reversed on the non-turbo engines and the engine wouldn't run.
If the engine is running, it's more than likely a turbo ECU, because the crank & cam sensor wiring is reversed on the non-turbo engines and the engine wouldn't run.
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
the part # is 22611aa694. That makes sense that the engine wouldnt run. It did run just not very well. How do you clear the codes off the ecu? My CEL is not coming on with my old ecu and there are several codes on there.
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
Re: 92 Legacy SS ignition issue
That is definitely a turbo legacy ECU.
You can clear the codes by following the info on my site.
http://www.surrealmirage.com/subaru/eng ... l#resetecu
You can clear the codes by following the info on my site.
http://www.surrealmirage.com/subaru/eng ... l#resetecu
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
-
- First Gear
- Posts: 79
- Joined: Sat May 29, 2010 7:02 pm
Re: 92 Legacy SS ignition issue
Thanks for the info
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer