kevinhall

Great tech support thanks for the info. I'm stumped again. Got her running like a top, with a swapped out coolant temp sensor (2-wire for the ECU) and cam position sensor. Performed road warrior mega errand chores all week long with no problems. On our way down the canyon from work she just quit running, out of seemingly nowhere. after coasting the last few miles to the bottom of the canyon she fired back up again and nearly got us home but ended up being towed. I cleared the 13 and 21 codes once home. Started her up just fine the next morning to run errands, stalled her (D'oh!!!) at a stop sign and it simply would not re-start. Now I'm getting a code 22, knock sensor, no 13 or 21 codes....yet..... Still just wont fire up. Quite the mystery. What would you do? It's clear she doesn't like being stalled, but why after doing that won't it start back up? Maybe a fuel pump impact switch is cutting power? Thanks for any ideas. Regards

92 EJ22 wagon runs fine then without warning stalls after running for a while. Finally got the CE light working to retrieve codes 21(coolant temp sensor) and 13(cam position sensor no signal). Are there 2 coolant temp sensors? One for the gauge and one for the computer or just one that satisfies both functions? My hypothesis is that when warm, and after enough time that the CE lite comes on, the ECU shuts her down due to an out of range coolant temp input. Any comments or suggestions? I will next swap in another cam position sensor, but she'll start right up when cool so my bet is that sensor is either intermittent or not required for the engine to run. Stupid question, but will an EJ22 run without a cam position input to the ECU? Just wondering. After warmed up and driving a while she dies and won't re-start, until re-setting the CE lite (overnite battery disconnected) Many things on this engine and electrical connections/components have been verified good, but a glitch or two remain. The dash temp gauge reads pegged right after startup (this is new, worked before) so will check the connection and sensor(s)? next. All 4 (that I'm aware of) engine bay grounds have been cleaned, lubed and are rock solid. Obviously have timing, compression, fuel and spark but out of nowhere, without warning she shuts down and won't fire back up. Verified the fuel pump relay is good, and the brown ignition relay too. No fuses are blowing, fusible link and slow blows all good, no shorts or opens detected. Any ideas you have would be greatly appreciated. Thanks for any insight, experience, knowledge and suggestions to this puzzling problem. Best Regards

Hello, Great input, info and links to resources, thank you! My next move is to verify the ignition switch itself is good, then clean the MAF, confirm good alternator, and cam pos sensor. Already tried a different crank pos sensor swap, no change. the CE lite....I honestly don't recall for sure if it was operational or not, but "I THINK" is was. It is not working now. I swapped bulbs in the cluster to be certain theres a good bulb in there. All fuses and links check good. I verified the 4 ground pigtails (that I found....)in the motor box are all solid. Also I find it odd that with the 2 green test connectors linked, and KOEO, there are no signs of life at all, no fan cycling, no fuel pump, no solenoids clicking, nothing. This is my first ever Subaru so learning about things quickly. I do know that after this no start thing happened, the tach WAS RESPONDING during cranking, but then after a while trying to start her it now shows no movement at all. Essentially just quit working seemingly out of nowhere. Next steps are MAF cleaning, verify a good alternator, than cam pos sensor(did the crank already) if no positive results. RE-CAP of my other post: Next step is cleaning the MAF... I did swap out the cam position sensor with a salvage yard donor (not guaranteed functional) and no change. Cranks just fine but still a solid no start, no CE light, no tach response while turning over. This no tach response issue crept into the mix a good bit after she first failed to re-start. Was showing starter motor cranking speed on the tach, but out of nowhere the tach shows no response at all. Very curious....... I have a donor cam position sensor to swap in as well, but will give that a shot after MAF cleaning. I prefer changing only 1 thing at a time when attempting to chase down issues.... Thanks for your replies I greatly appreciate any input on this annoying no start issue. Regards, Rosco

Hello, Great input, info and links to resources, thank you! the CE lite....I honestly don't recall for sure if it was operational or not, but "I THINK" is was. It is not working now. I swapped bulbs in the cluster to be certain theres a good bulb in there. All fuses and links check good. I verified the 4 ground pigtails (that I found....)in the motor box are all solid. Also I find it odd that with the 2 green test connectors linked, and KOEO, there are no signs of life at all, no fan cycling, no fuel pump, no solenoids clicking, nothing. This is my first ever Subaru so learning about things quickly. I do know that after this no start thing happened, the tach WAS RESPONDING during cranking, but then after a while trying to start her it now shows no movement at all. Essentially just quit working seemingly out of nowhere. Next steps are MAF cleaning, verify a good alternator, than cam pos sensor(did the crank already) if no positive results. RE-CAP of my other post: Next step is cleaning the MAF... I did swap out the cam position sensor with a salvage yard donor (not guaranteed functional) and no change. Cranks just fine but still a solid no start, no CE light, no tach response while turning over. This no tach response issue crept into the mix a good bit after she first failed to re-start. Was showing starter motor cranking speed on the tach, but out of nowhere the tach shows no response at all. Very curious....... I have a donor cam position sensor to swap in as well, but will give that a shot after MAF cleaning. I prefer changing only 1 thing at a time when attempting to chase down issues.... Thanks for your replies I greatly appreciate any input on this annoying no start issue. Regards, Rosco

Next step is cleaning the MAF... I did swap out the cam position sensor with a salvage yard donor (not guaranteed functional) and no change. Cranks just fine but still a solid no start, no CE light, no tach response while turning over. This no tach response issue crept into the mix a good bit after she first failed to re-start. Was showing starter motor cranking speed on the tach, but out of nowhere the tach shows no response at all. Very curious....... I have a donor cam position sensor to swap in as well, but will give that a shot after MAF cleaning. I prefer changing only 1 thing at a time when attempting to chase down issues.... Thanks for your replies I greatly appreciate any input on this annoying no start issue. Regards, Rosco

Summary: -Suddenly won't run but have the basics. -ALL fuses under hood and above kick panel all good -CE light bulb good but no CE lite at all -Tach up and failed out of nowhere while cranking, now no response. SO it ran perfectly and just died and will not start back up. All basics are there, fuel, timing, spark, compression are spot on. What is odd is that out of nowhere, the tach quit responding while cranking, it had been working in the sub 600 ish range while the starter rotated the crank. Now it's just no tach response. ALSO the CE lite does not work so I can't see codes. I pulled the cluster and put known good bulbs in, also swapped the good working seat belt bulb to the CE position and vice-versa to insure the CE light is good. Now I connected the sensors/system check under dash green plugs(no CE lite came on), turned the ignition to on/run(not start) and nothing happens at all. No fan cycling, no sensors/solenoids clicking, no fuel pump operation, just nothing at all. Next, turned it off, undid the green plugs, connected the black plug, diagnostics CE test connectors and switched the ignition to on/run. As expected no CE lite so no codes and of course no hints as to why the CE light is not working. I found an ECU, guts only (condition unknown), in a salvage yard from a 93 Legacy wagon but it's non ABS and automatic trans. Before I hail mary this ECU into the car I have a few other things to try to get her to run, and of course ANYTHING you knowledgeable enthusiasts can share. There must be some elusive electrical gremlin teasing me. Perhaps a harness short or open somewhere (fuses aren't blowing) a relay gone bad, or the ECU went belly up... What would you advise next? I'm a Subaru newbie but a 50+ year mechanic and this car has me stumped. Any input is tremendously appreciated, Thank you.

Thank you for this great info, very helpful as I'm a first time Subaru owner. I found an ECU, guts only (condition unknown), in a salvage yard from a 93 Legacy wagon but it's non ABS and automatic trans. Before I hail mary this ECU into the car I have a few other things to try to get her to run, BUT, first thing is first: SO it ran perfectly and just died and will not start back up. All basics are there, fuel, timing, spark, compression are spot on. What is odd is that out of nowhere, the tach quit responding while cranking, it had been working in the sub 600 ish range while the starter rotated the crank. Now it's just no tach response. ALSO the CE lite does not work so I can't see codes. I pulled the cluster and put known good bulbs in, also swapped the good working seat belt bulb to the CE position and vice-versa to insure the CE light is good. Now I connected the sensors/system check under dash green plugs(no CE lite came on), turned the ignition to on/run(not start) and nothing happens at all. No fan cycling, no sensors/solenoids clicking, no fuel pump operation, just nothing at all. Next, turned it off, undid the green plugs, connected the black plug, diagnostics CE test connectors and switched the ignition to on/run. As expected no CE lite so no codes and of course no hints as to why the CE light is not working. Summary: -Suddenly won't run but have the basics. -ALL fuses under hood and above kick panel all good -CE light bulb good but no CE lite at all -Tach up and failed out of nowhere while cranking, now no response. There must be some elusive electrical gremlin teasing me. Perhaps a harness short or open somewhere (fuses aren't blowing) a relay gone bad, or the ECU went belly up... What would you advise next? I'm a Subaru newbie but a 50+ year mechanic and this car has me stumped. Any input is tremendously appreciated, Thank you.

Hi, I'm considering an ECU swap to fix some issues. My car has rear disc brakes and ABS. Does the ECU have anything to do with the ABS system or is that managed by a separate independent system? I sure don't want to introduce any incompatibilities or any other issues by trying this. Also this 92 wagon has a 5 speed manual trans. I assume there's nothing computer controlled with this transmission, so an ECU swap from a donor car with an automatic should not be an issue? Do you know what year range of ECU's for an EJ 2.2 liter engine will be correct? My guess is 89-93 ECU's are interchangeable so I bet a 94 ECU won't work. Please advise. Thanks!

Excellent input, fabulous suggestions and greatly appreciated. Would a 92 2.2 liter N/A motor have a crank position sensor? I did see (going from memory the car is 9 miles away from home and my last visit there a week ago) the cam position sensor on the engines drivers side just aft of the timing belt cover. I suspected that could be the issue but didn't want to just start randomly swapping out everything. Time is precious. The CE light flash codes should be a direct shortcut to determining what sensor/ECU input could be an issue. I'll diagnose ASAP, HOWEVER, the battery ground has been disconnected for days. Does that erase codes? So, there may be nothing in trouble code memory to observe in test mode??? Just wondering. Please advise. Thanks again for sharing your knowledge, experience, and recommendations to chase down this gremlin efficiently and effectively. I believe it's something very basic, yet at this point a no start that eludes me. Also this is my first Suby so I'm at the beginning of the learning curve. Thanks again! Best Regards

Hi, She turn over just fine, but will not start. Something intermittent is going on. Stalled it pulling out of gas station. Cranks no problem but Would not start. 10 minutes later fired right up drove it home no issues. Drove it normal for at least of week of daily driving, no problems. Started it on a cold morning two days ago to defrost it. BAcked out of the driveway, foot slipped off clutch and stalled it. Restarted no prob, drove her down the street, then just no power at all engine died, WILL NOT RESTART AGAIN. I HAVE: Good battery, good battery connections, Good fuel pressure, new fuel filter Good compression, good timing Good spark Oddly, the tach showed revs when cranking, but now, out of nowhere, the tack DOES NOT move at all when cranking. NOTHING was changed, it just suddenly started doing that. Any different suggestions or anything else to try? Seems like an intermittent electrical gremlin, your thoughts and ideas would be greatly appreciated. Thanks in advance for any help Ross 8016354542