bcool Posted October 6, 2006 Share Posted October 6, 2006 I recently picked up a GL-10 TurboAWD as a small project. It has been sitting for a while and it looked like that last person that worked on it didnt know what the hell they were doing, they were just blindly throwing parts at it as it appears (AFM's, MAPs, Injectors, Injector resistors, etc) Anyways, the injectors are getting proper voltage to them its just that the ECU isnt grounding them to fire. I'm pulling a code 21 out of the ECU (engine coolant temp) my question is, is this a critical sensor that wont allow the engine to fire? I just wanted to find out before i replace the ECU. -Brendan Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 6, 2006 Share Posted October 6, 2006 No. Check your fuel pump. GD Quote Link to comment Share on other sites More sharing options...
bcool Posted October 6, 2006 Author Share Posted October 6, 2006 I'm getting fuel pressure, I also put a Noid light on the injector clip and i'm not getting anything. I dont have any testing proceedures to look at for ECU checks, so i may have to bite the bullet and get another ECU; so if anyone has a FSM on hand maybe give me a rundown of what the troubleshooting guide says i should do next. Unfortunetly theres about 20 or so ECUs for just this year and model. I'm open to any more suggestions before i have to pick up another one. Thank you. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 6, 2006 Share Posted October 6, 2006 Just about any EA82T ECU should work - as long as it's for the right type of MAF (hot wire or flapper door). But if you are pulling codes, the ECU is probably ok. They don't usually fail unless someone connected the battery backwards (instant failure). GD Quote Link to comment Share on other sites More sharing options...
86ruguy Posted October 6, 2006 Share Posted October 6, 2006 i'm not sure if you are aware of the fact that the ecu gets it's signal to fire the injectors from the same place the coil gets it's signal to fire the sparky bolts, but it does. it all runs off the distributor signal so i would check to see if the ignition is working properly before you go replacing the ecu. just my 2cents dave Quote Link to comment Share on other sites More sharing options...
bcool Posted October 6, 2006 Author Share Posted October 6, 2006 Yes, i should have mentioned in my previous post that the car is getting spark. I've had it running off starting fluid before. So i imagine that the trigger pickup is good. I'm just curious to know if the FSM has any testing procedures for the ECU at this step. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 7, 2006 Author Share Posted October 7, 2006 Just about any EA82T ECU should work - as long as it's for the right type of MAF (hot wire or flapper door). But if you are pulling codes, the ECU is probably ok. They don't usually fail unless someone connected the battery backwards (instant failure). GD Well i'm curious to know if the injector drivers somehow failed. Although in an RX-7 ECU when i've seen one driver fail the others are still on board. I'm leaning towards your guy's opinion on this one, but it seems to be the last link. Quote Link to comment Share on other sites More sharing options...
BoostedBalls Posted October 7, 2006 Share Posted October 7, 2006 I recently picked up a GL-10 TurboAWD as a small project. It has been sitting for a while and it looked like that last person that worked on it didnt know what the hell they were doing, they were just blindly throwing parts at it as it appears (AFM's, MAPs, Injectors, Injector resistors, etc) Anyways, the injectors are getting proper voltage to them its just that the ECU isnt grounding them to fire. I'm pulling a code 21 out of the ECU (engine coolant temp) my question is, is this a critical sensor that wont allow the engine to fire? I just wanted to find out before i replace the ECU. -Brendan I have an 86 EA82t ECU for $40 shipped, PM me if interested. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 7, 2006 Author Share Posted October 7, 2006 I have an 86 EA82t ECU for $40 shipped, PM me if interested. Thank you for the offer, local wrecking yard has them for $45 dollars a pop. Quote Link to comment Share on other sites More sharing options...
rguyver Posted October 7, 2006 Share Posted October 7, 2006 how long has the car sat ? i have seen several EA engines with dead injectors and yes ALL 4 and ALL 6 on an XT6 change one injector and try to start the car if it fires at all its got dead injectors i dont know what causes it to happen but i had a 86 turbo car that one day miss fired on one side then i changed the ingector , and a day later the one right next to it dyed and i changed it and its 5 years later and still good ! I also changed an XT6 engine with one i had sitting for 3years and and tryed to start it but all 6 injectors would not fire so swaping all of them out from the orignal engine fixed it , they could have stuck from sitting with bad gas and would not free up ? Quote Link to comment Share on other sites More sharing options...
bcool Posted October 7, 2006 Author Share Posted October 7, 2006 I had thought of that as well, thats why i put a noid light on the injector clips. So i know the ECU isnt trying to fire the injectors. Quote Link to comment Share on other sites More sharing options...
BoostedBalls Posted October 7, 2006 Share Posted October 7, 2006 Thank you for the offer, local wrecking yard has them for $45 dollars a pop. Ok, OK, $35 shipped...? It's already boxed up because I had it on ebay, they killed my auction because they said I was spamming. I only had 820 keywords on the auction! haha Quote Link to comment Share on other sites More sharing options...
bcool Posted October 8, 2006 Author Share Posted October 8, 2006 Ok, OK, $35 shipped...? It's already boxed up because I had it on ebay, they killed my auction because they said I was spamming. I only had 820 keywords on the auction! haha As long as it will work for my motor i'll take it. I'm curious though, it was flashing a code 22 at me while cranking (2 long light pulses followed by 2 short ones), looks like a knock sensor circut problem. Also someone said that it picks up the trigger from the same place the spark does. I'm wondering if theres a good way to test to make sure that the ECU is getting the trigger signal. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 9, 2006 Author Share Posted October 9, 2006 Alright, i got to work on it a bit today, i was testing to make sure there was no resistance/open in the wires from the ECU to the injectors and sure enough, they had an open. I followed the harness down a bit and tackled it down to the big harness connecter by the battery. I pulled it apart and cleaned it out, now i'm getting a good signal on the noid light. Looks like i'm back in business. If this pesky fuel pump wasnt holding me up i could have had it started by now. Quote Link to comment Share on other sites More sharing options...
daeron Posted October 10, 2006 Share Posted October 10, 2006 if you do a search through the archives (go to search, and click advanced search, its mush easier to use and you get better results) and look for ford fuel pump, you can find information on a very common swap to a very common, inexpensive, and simple to swap in fuel pump.. i dont know the details, but I've read the threads. If you want, ive got two adobe acrobat files that contain the engine/electrical section of the FSM.. its a chunk that floats around here. i could email them to you.. i downloaded them but i didnt bookmark it, someone here has them on the webpage. not a complete FSM but alot of thorough information, the tough stuff that you need to have data on to fix the FI system etc.... send me a private message with your email address, and let me know if you can take a ten megabyte attachment in your email.. otherwise ill ship one at a time, so to speak.. i got em for free, its very useful data, the least i can do is pass it along. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 10, 2006 Author Share Posted October 10, 2006 if you do a search through the archives (go to search, and click advanced search, its mush easier to use and you get better results) and look for ford fuel pump, you can find information on a very common swap to a very common, inexpensive, and simple to swap in fuel pump.. i dont know the details, but I've read the threads. If you want, ive got two adobe acrobat files that contain the engine/electrical section of the FSM.. its a chunk that floats around here. i could email them to you.. i downloaded them but i didnt bookmark it, someone here has them on the webpage. not a complete FSM but alot of thorough information, the tough stuff that you need to have data on to fix the FI system etc.... send me a private message with your email address, and let me know if you can take a ten megabyte attachment in your email.. otherwise ill ship one at a time, so to speak.. i got em for free, its very useful data, the least i can do is pass it along. Yes, please send them this way, bcool@cableone.net it would be very much appreciated. After having a full FSM for my RX-7 going back to Chiltons manual is like reading a kids book, its the only real section i use anyways. I'll take a look into the ford fuel pump setup. Quote Link to comment Share on other sites More sharing options...
daeron Posted October 10, 2006 Share Posted October 10, 2006 email being sent. incidentally the ford fuel pump is probably a great swap for almost any FI automobile with an expensive pump... its WAY overkill but not in a manner that should cause a problem with a properly maintained fuel system, the pressure regulator just routes excess back to the tank. the second section includes alot of diagnostics on all the little FI components, too.. they can be exhausting but it never hurts to verify anything you might have cause to question. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 10, 2006 Author Share Posted October 10, 2006 Yeah, it shouldnt be too much for this system. Looking at stock FPR's the outlet's are about as small as a pen head. If i had a fuel pressure gauge on hand i wouldnt mind seeing if you make a jump in fuel pressure at idle or not. Above stock pressure could give you a rich condition. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 10, 2006 Author Share Posted October 10, 2006 Thanks a bunch for sending that, i got it. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 11, 2006 Author Share Posted October 11, 2006 Sweet! The suprises never end, no sooner do i figure out the harness issue i come to find out that 2 or possibly 3 injectors are frozen up. Does anybody know the stock CC's on these bad boys? They look like a typical bosh injector but with a bit of a twist with the rubber sealer ring in the middle. i'm pretty sure i could retrofit a set of standard bosh injectors in there if i can figure out what the stock flow rate on these bad boys are. Quote Link to comment Share on other sites More sharing options...
daeron Posted October 11, 2006 Share Posted October 11, 2006 i dont know the CC, but i know 280ZX turbo injectors are an upgrade.. so if you could get ahold of some of them it could be done :- ) the search function can be your friend Quote Link to comment Share on other sites More sharing options...
bcool Posted October 12, 2006 Author Share Posted October 12, 2006 I dont know why you'd need to limit yourself to to just 280zx injectors. All i had laying around my house were Denso TurboII injectors out of an RX-7. 550cc's might drown the poor roo haha. I dont want to buy an SAFC for the car yet but I might have to with the injectors i picked up, i have no clue what they are off of, just as long as they're less CC's then what i had i think i'll be okay. I was going to get some 240cc honda injectors but the body is all wrong to transfer all the subaru components over to them. I can always get an SAFC and pull the wideband from my RX-7 and tune it. I'll post some finalized pictures of my injectors tomorrow. Quote Link to comment Share on other sites More sharing options...
daeron Posted October 12, 2006 Share Posted October 12, 2006 a common upgrade was my meaning.. good luck and be sure to post what you wind up using, it always helps the next guy. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 13, 2006 Author Share Posted October 13, 2006 Alas, the roo runs! I'm getting the injector pictures up right now. It runs pretty pig rich and starts stumbling at around the 4K rpm mark while driving. Looks like an SAFC, possibly my rx7 turbo, and a ghetto frontmount setup are in order. Quote Link to comment Share on other sites More sharing options...
bcool Posted October 13, 2006 Author Share Posted October 13, 2006 Heres some pictures of the injectors. I stopped by a local speed shop and they had a box o' injectors. I picked through them and found 4 or the same type they charged me 10 dolla. New injectors basicly cost me around 15 dollars total. Stockers The new specimens of unknown CC's 1st finalized injector All 4 almost ready to go. Quote Link to comment Share on other sites More sharing options...
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