So my ECU took a shit. What would you suggest?

[terrets]

So I bought an EMU used from someone on 3si and I knew I should have fucking checked the wiring. Well I didnt. UGH IM STUPID.:mad: I wanted to get it hooked up and running. Well I set everything to stock on it about 3 days ago. I started my car and let it warm up for the pure purpose of data logging. I couldnt drive it because my slave cylinder leaks to bad. So I was going to fix that just now and I started the car to pull it in the garage. Well I let it idle for 20 seconds and I opened the door to listen to the motor. Well fuckin it died and then saw a bit of smoke and smelled electrical burning. Well I pulled the ECU and this is what happened.

Looks like a resistor or diode.

Do you guys think I should just move onto AEM Series 2 or get a new ecu and keep EMU. Or if this is fixable(I doubt it). I am new to tuning and wanted to learn on EMU first but I wouldnt mind getting AEM.

ps. Please dont flame. I know Im a dumbass.:mad:

[Mikes2nd]

emu? we have emu?

[CoreyB]

Wow thats pretty bad. What was wired wrong to cause that ?

[beepbeep]

I think whether you move on to the AEM or stick with what you have/are learning should be based on what you eventually want from your car. I have no idea if your current ECU can be fixed. Sorry, man.

[Emilie@GZP]

What do you have done to your car now? AEM EMS is overkill for the majority of set-up's people run on these cars, especially if your car is daily driven, and you aren't looking to push your car to the breaking point of your set-up.

[Atrosity]

What do you have done to your car now? AEM EMS is overkill for the majority of set-up's people run on these cars, especially if your car is daily driven, and you aren't looking to push your car to the breaking point of your set-up.

This is what a lot of us in socal are saying. EMS seems best for "Race" cars, the cars that every tiny little detail matters on the track you do not even need it as this was proven as well.

For the price of an EMS you can have a fully rebuilt ecu and a greddy e-manage blue/ultimate plus left over funds for more mods to be faster some how. If you get an EMS, think about it...you are stuck being a shop car. You can't have a friend with knowledgeable experience street tune your car you need to be on the dyno to be tuned and if you change anything you need to go back to the dyno to retune again and all this costs a lot!

[mh3kgt]

I say get a good rebuilt ECU and run a piggyback so you can learn to slowly tune it yourself. I used to have an Arc2, and it was great and can be had for ~$400 or so, as well as Maft-pro, which is what I run now. I love that I was able to go speed density with the Maft-pro, and the tuning of it can be a handfull at first, but once you learn all the pages and tables it's not bad. I've never messed with Emanage tho. Your choice, but really only a handfull of members here could realistically use an EMS to it's full potential. Remember that a simple setup is more often than not a more reliable system since there are less variables involved. Going overkill on a lot of stuff just causes headaches in the long run, not to mention wasted $$$

[terrets]

emu? we have emu?

Emanage Ultimate. Yes :D. Its pretty rocking from what Ive been reading and learning...not that Ive used it for anything except logging yet >_<


Wow thats pretty bad. What was wired wrong to cause that ?

Havent had time to check yet.



Yes I know AEM EMS is overkill now because I am stock. I will be running a T70 with E85 after this winter though. I was quoted at GZP for $250 for one that was tested and one new cap :0. I guess it would be cheaper than AEM. :/ I guess Ill have to look around. I wanted to drive my car for one more month and get logging and tuning on 93 and E85 before I build this beast, but I dont know if thats going to happen :(.

beepbeep: I do not believe its fixable either. The board looks shot. Almost separated and like the resistor/diode exploded :/

Astrosity: I have no tuner friends >_<. I am the most knowledgeable on cars of anyone I know :/.

[Hammer]

Emanage Ultimate. Yes :D. Its pretty rocking from what Ive been reading and learning...not that Ive used it for anything except logging yet >_<



Havent had time to check yet.



Yes I know AEM EMS is overkill now because I am stock. I will be running a T70 with E85 after this winter though. I was quoted at GZP for $250 for one that was tested and one new cap :0. I guess it would be cheaper than AEM. :/ I guess Ill have to look around. I wanted to drive my car for one more month and get logging and tuning on 93 and E85 before I build this beast, but I dont know if thats going to happen :(.

beepbeep: I do not believe its fixable either. The board looks shot. Almost separated and like the resistor/diode exploded :/

Astrosity: I have no tuner friends >_<. I am the most knowledgeable on cars of anyone I know :/.

I am not sure if our cars can be properly tuned for E85 without something like an AEM EMS. Because you need to be able to adjust and control timing as well.
Or add it up several other devices to do the same job cost as much as the AEM. E85 is the deciding factor. Plus if you go to E85 Then get boost control as well because you can crank those 9b's all the way up to the max on E85. You did not disclose this in your first post and it does change the game a lot. Aem also lets you run 2 tunes if you want to switch back and forth between 93 and E85. But you pay more to have both tunes set in the Aem as well.

[terrets]

Sorry I left out the E85 part. Well I really dont want to spend all the money to have it dyno tuned though. :/. I do have a Greddy MAP sensor and A/F harness and will be tuning with these. I should have put that in my post also. I have a MBC currently.

Cant I adjust and control timing with EMU? With stage 2.5?

Im looking at the wiring now....Could a wrong jumper be the cause?

[Hammer]

Sorry I left out the E85 part. Well I really dont want to spend all the money to have it dyno tuned though. :/. I do have a Greddy MAP sensor and A/F harness and will be tuning with these. I should have put that in my post also. I have a MBC currently.

Cant I adjust and control timing with EMU? With stage 2.5?

Im looking at the wiring now....Could a wrong jumper be the cause?

Well there is a lot more to this. Like to max out 9b's on E85 will require 600cc or 650cc injectors. A stronger fuel pump. Then if you dual tune the larger injectors will advance timing way too far on 93 pump gas. So you need to adjust timing not just hmm it might be nice to do, this becomes a must do for a dual tune. If you have it set in an Aem it is easy to switch back and forth for a dual tune. Other systems might be very cumbersome to adjust a dual tune back and forth. On 93 you will also have to pull boost back to about 12 psi but you can run max boost on E85.

Something else if you do not want to spend the money to do this right then I would suggest do not do it at all. Just run it stock and buy a new/rebuilt ECU.

[terrets]

I know, Ive got a walbro rewired, 680cc injectors. I dont plan on maxing out the 9b's unless I dont hit knock. One of my other posts I also mentioned Im going T70, I can not run stock.

And why cant I dual tune with having two different setups saved on my PC that I just have to export to EMU everytime I switch between 93 and e85? I dont plan on running 93 ever after I get on e85 unless I have to for long trips.

I just checked the wiring with the EMU thread on 3si. Everything seems to be fine for the wires listed there. Im working on the ones not listed, with my manual. I just dont get why it fried the SECOND I opened my passenger door turning on the dome light.

I found jumper 18 was suppose to be 1-2 for add fuel trim only and it was open for add/sub which can only be done with stage 3 wiring. Could this be the problem?

[Hammer]

And why cant I dual tune with having two different setups saved on my PC that I just have to export to EMU everytime I switch between 93 and e85? I dont plan on running 93 ever after I get on e85 unless I have to for long trips.

Its your car you can do what ever you want.



I just checked the wiring with the EMU thread on 3si. Everything seems to be fine for the wires listed there. Im working on the ones not listed, with my manual. I just dont get why it fried the SECOND I opened my passenger door turning on the dome light.



This is why I would suggest you have it done at a shop. Trial and error especially the ERROR part will get far more costly as you go down this path. It is very possible that you will wind up spending far more on your setup trying to do it yourself and the oops that happen along the way as opposed to spending on doing it the right way the first time.
But that is just my observation, and you did ask for input. That is what I suggest. Your track record so far does not do you any favors in this do it yourself method.

[terrets]

Im doing it myself because I want to learn. I want to tune. I want to say I did EVERYTHING myself on this car. Not pay someone else to do it. I understand mistakes can cost money and I am completely ok with that. Im fine with the error part. I did ask for input from everyone and I thank you for your input. The only time I might pay for a tune is to get the absolute max out of my set up on WOT and max boost. So that will only be in the end once I have my own tune set up. I dont mind if MY tune isnt the max I can get.

So the wiring looks correct. It must have been that jumper, or coincidence(i doubt).

[Mean Green]

If you turned the dome light on and it fried your ecu, then YOU wired something wrong or crimped some wires together unknowingly. From what I can see on your ecu, the only time you actually get burns like that is if you have an electrical short of some sort. I wouldn't even try to salvage that ecu...get another and despite how much you want to learn, let someone do it for you and watch them do it. Sometimes you have to sit back and watch to learn or else it may cost you more than it's worth. Just ask on here, I am sure someone lives near you and is willing to at least help you.

[mh3kgt]

I am not sure if our cars can be properly tuned for E85 without something like an AEM EMS. Because you need to be able to adjust and control timing as well.
Or add it up several other devices to do the same job cost as much as the AEM. E85 is the deciding factor. Plus if you go to E85 Then get boost control as well because you can crank those 9b's all the way up to the max on E85. You did not disclose this in your first post and it does change the game a lot. Aem also lets you run 2 tunes if you want to switch back and forth between 93 and E85. But you pay more to have both tunes set in the Aem as well.

Actually, he can solve all of his tuning issues with a simple Maft-pro all for around ~$450. This is what I use, and I have full control over my fuel, boost, and timing. Plus I am now speed density so that boost leaks do not affect my tune and I'm not dead on the side of the road if a coupler pops off or something. I just simply can't build positive boost, but the car is still perfectly driveable. I'd say a $450 solution is a lot less headache than a $2000 EMS. Also, you can have other tunes for 93 or E85 saved on your laptop or wherever that takes about 5seconds to upload to the Maft-pro. I have a base tune that I used for a long time to just drive around town at wastegate on the 15g's and recently uploaded a different tune so that I can up the boost and my afr's are rock steady all the way to WOT. I still need to mess with my timing to maximize the power and spoolup on the 15g's tho. Just takes some time, lots of datalogging and a simple laptop to get everything where you want it to be.

[terrets]

If you turned the dome light on and it fried your ecu, then YOU wired something wrong or crimped some wires together unknowingly. From what I can see on your ecu, the only time you actually get burns like that is if you have an electrical short of some sort. I wouldn't even try to salvage that ecu...get another and despite how much you want to learn, let someone do it for you and watch them do it. Sometimes you have to sit back and watch to learn or else it may cost you more than it's worth. Just ask on here, I am sure someone lives near you and is willing to at least help you.

So tell me, what could I have wired wrong?? All my gauges and stuff has been fine for months....I didn't touch the wiring on the EMU and its a boomslang harness...I checked all the wiring and its FINE. And Im not going to watch someone do whatever your saying, because like I stated before, I am the most knowledgeable person on cars I know. And Ive had Multiple electronics courses such as DC1, DC2, AC1, AC2, residential wiring, electromagnetic fields, and some computer hardware classes. Oh and I was top of the class and always way ahead of and faster then everyone else at everything in these classes. Also I know the ECU is SHOT. I stated that in one of my posts. The board basically expanded/exploded. It is NOT fixable in anyway.

Again, what do you think is wired wrong? Sorry I feel like your calling me dumb lol.



I did notice when I ran it the first time with EMU (without opening my door) that my voltage hit 13....not sure if this is ok or not as I know our Chevy truck its 14 sometimes. Maybe my voltage regulator is shot....

Im getting a new ECU and going to run it without EMU a bit. Then quite possibly try again, paying more attention to whats going on. lol.

Thanks mh3kgt.

[Mean Green]

So tell me, what could I have wired wrong?? All my gauges and stuff has been fine for months....I didn't touch the wiring on the EMU and its a boomslang harness...I checked all the wiring and its FINE. And Im not going to watch someone do whatever your saying, because like I stated before, I am the most knowledgeable person on cars I know. And Ive had Multiple electronics courses such as DC1, DC2, AC1, AC2, residential wiring, electromagnetic fields, and some computer hardware classes. Oh and I was top of the class and always way ahead of and faster then everyone else at everything in these classes. Also I know the ECU is SHOT. I stated that in one of my posts. The board basically expanded/exploded. It is NOT fixable in anyway.

Again, what do you think is wired wrong? Sorry I feel like your calling me dumb lol.



I did notice when I ran it the first time with EMU (without opening my door) that my voltage hit 13....not sure if this is ok or not as I know our Chevy truck its 14 sometimes. Maybe my voltage regulator is shot....

Im getting a new ECU and going to run it without EMU a bit. Then quite possibly try again, paying more attention to whats going on. lol.

Thanks mh3kgt.


No need for an apology, I was basically calling you dumb. lol

Try just throwing an N/A ecu in it just at idle while you try to diagnose the electrical problem. That way it's significantly cheaper to replace than a TT ecu. Don't drive it with the N/A ecu though, it will run lean.

[terrets]

I didnt know I could run an N/A ecu. I actually have an N/A shell here.. WOOOOT. Wait. Its a 94 and I have a 91. :/ It wont work will it?

[Hammer]

I know, Ive got a walbro rewired, 680cc injectors. I dont plan on maxing out the 9b's unless I dont hit knock. One of my other posts I also mentioned Im going T70, I can not run stock.

And why cant I dual tune with having two different setups saved on my PC that I just have to export to EMU everytime I switch between 93 and e85? I dont plan on running 93 ever after I get on e85 unless I have to for long trips.

I just checked the wiring with the EMU thread on 3si. Everything seems to be fine for the wires listed there. Im working on the ones not listed, with my manual. I just dont get why it fried the SECOND I opened my passenger door turning on the dome light.

I found jumper 18 was suppose to be 1-2 for add fuel trim only and it was open for add/sub which can only be done with stage 3 wiring. Could this be the problem?

I missed this T70 also. I am not familar with the T70 turbo. How much power are you shooting for? My guess is that the 680 injectors you have will be way to small for the T70 turbos on E85. Maybe about right for 93 pump gas but too small for E85.

[Mean Green]

No, the 94 won't work. All other 1G ecu's will work.

[terrets]

Your right about the injectors being to small...I will be upgrading to 1000cc injectors. Along with two walbros and everything else necessary including LSDs and other drivetrain stuff. The 680cc would be perfect for 93. Im shooting for atleast 500 but more for 600 :D. And a TON of torque

[terrets]

No, the 94 won't work. All other 1G ecu's will work.

Ok looks like Ill be calling junkyards. Or getting one here. Maybe lol.

[Mean Green]

Ok looks like Ill be calling junkyards. Or getting one here. Maybe lol.

www.car-part.com

I've had great luck using that site.

[terrets]

Thanks

[terrets]

Ive pretty much decided on AEM EMS :D. Well Im posting up my EMU for sale.

[terrets]

Good news guys! I finally got an N/A ecu to hook up and I do not have wiring issues. It must have been just a leaky capacitor. Thanks for all the help. I think Im going to sell my T70 kit and rebuild it and get everything on the car perfect before I start upgrading turbos. I probably will keep my EMU so I can learn tuning. Now I just need to find a TT 91-93 ECU. :D

[mh3kgt]

Sweet deal man, glad it wasn't a wiring issue, those sound like a bitch to trace out

[terrets]

Any Emange guys think I could wire my A/F wideband in and use the A/F correction map with this N/A ECU?

[blindmist]

Any Emange guys think I could wire my A/F wideband in and use the A/F correction map with this N/A ECU?

Probably, but you will still probably be running into a 100% IDC problem with a NA ecu.

Keep your Emanage, I am starting to fall in love with mine.

[terrets]

I am pretty much planning on it. I still cant believe no one wants a complete T70 kit :(. I probably shouldnt have bought it in the first place :lol: It was kind of spur of the moment hahaha.

[ver fer]

I'd keep the EMU too. The 680's may be a little big for 9b's and e85 though.

[terrets]

Thats ok.>..It looks like no one wants that kit so I guess Im keeping it. If my car isnt up and running as soon as I wanted Ill just be sad.

[99 vr4]

Did you look over at the other thread . . . fully flashable ECU . . . http://www.3sgto.org/showthread.php?1820-99-Montero-ECU-92-Stealth-TT

[terrets]

Yes sir I have been reading up on it. But, no one wants to buy my EMU. I think Im going to go find a Montero ecu this week :D

[99 vr4]

Yes sir I have been reading up on it. But, no one wants to buy my EMU. I think Im going to go find a Montero ecu this week :D

Send me a PM . . . I can help here

[steve]

It must have been just a leaky capacitor.

It sure looks like it was a dried out original capacitor that shorted.

Just another reminder that if you still have original caps on your ECU your just waiting for something like this to happen. Get them changed.

[terrets]

Is that reminder for me steve?? Because I dont have an ECU anymore :lmao:

[ver fer]

If you want I could look at the ECU to see if it is repairable.

[terrets]

:lol: if you really want. But it looks like the bottom of the board exploded out a bit >_<

[steve]

Is that reminder for me steve?? Because I dont have an ECU anymore :lmao:

It's a reminder to everyone since failures like this are avoidable and it's not like their are making more 3S ECUs.

[terrets]

Ahhh yes yes..