ShaggyZ Posted September 25, 2009 Share Posted September 25, 2009 Check it anyway. I've messed with some L28's that idled fantastic - or so it seemed - and then I found out the plug wires were incorrectly connected. Quote Link to comment Share on other sites More sharing options...
ARZ_ Posted September 25, 2009 Share Posted September 25, 2009 i dont think so...when its warm it idols extremely smooth with no hicups or anything.Don't "think so." KNOW SO!!! Check don't guess. Check it anyway. I've messed with some L28's that idled fantastic - or so it seemed - and then I found out the plug wires were incorrectly connected.I agree 100% that's why I mentioned it. When idling, an inline 6 has an amazing capacity for improper spark timing. You would be very surprised at how smooth your L motor idles if you swap 2 and 4. Don't believe me, TRY IT! PLUS!!! you did not answer my question. Did you do WOT in the video or were you easing into the throttle? 1. Dont answer all the questions. 2. Dont bother checking (for sure) the problems that people that have already done what you are doing. 3. Give extremely short responses, with no conclusion. 4. And make sure "all involved" know your not going to check that "cause you already did that when you installed it." This is the quickest way NOT to get help. Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 26, 2009 Author Share Posted September 26, 2009 In order to wire the coils backwards i would have to cut up my wiring harness and move the plugs around. the wiring harness on a 2jz is form fitted to the coils so plugging them in wrong is virtually impossible. As for the WOT question...no i was not WOT i was about 15% throttle. Don't "think so." KNOW SO!!! Check don't guess. I agree 100% that's why I mentioned it. When idling, an inline 6 has an amazing capacity for improper spark timing. You would be very surprised at how smooth your L motor idles if you swap 2 and 4. Don't believe me, TRY IT! PLUS!!! you did not answer my question. Did you do WOT in the video or were you easing into the throttle? 1. Dont answer all the questions. 2. Dont bother checking (for sure) the problems that people that have already done what you are doing. 3. Give extremely short responses, with no conclusion. 4. And make sure "all involved" know your not going to check that "cause you already did that when you installed it." This is the quickest way NOT to get help. Quote Link to comment Share on other sites More sharing options...
stony Posted September 26, 2009 Share Posted September 26, 2009 There should be an area in the computer that you set your firing order that's what I think we are talking about. If you know it's right then not sure what to tell you Quote Link to comment Share on other sites More sharing options...
garvice Posted September 26, 2009 Share Posted September 26, 2009 Can the AEM test outputs? I can test all my Motecs outputs. I.E. I can tell which cylinder is firing/injecting without starting the car. Very good for double checking your wiring before you fire the car up for the first time. You also said that you couldn't have wired it wrong because the loom is fitted to the coils, but didn't you splice in an AEM Loom? Couldn't you have spliced the wrong cylinder wires in? If your computer doesn't support the testing of outputs, then remove your crank angle sensor (or get a second one) and spin it by hand while watching the spark plugs fire. Quote Link to comment Share on other sites More sharing options...
garvice Posted September 26, 2009 Share Posted September 26, 2009 Or do a continuity test from ECU output plug to coil plug to determine which output is which. Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 27, 2009 Author Share Posted September 27, 2009 the aem system is plug and play so the only things i had to splice in were a map sensor and a air temp sensor Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted September 28, 2009 Share Posted September 28, 2009 What crank sensor are you using? I tried using the OEM crank sensor with TEC II and it failed miserably with similar symptoms. If you are not using the OEM setup, make sure the air gap is correct for the diameter of the trigger wheel. Since you are having RPM-related issues, that is where I would put the focus. garvice is on the right track but I would go one step further and have someone put a scope on the crank sensor circuit. Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 28, 2009 Author Share Posted September 28, 2009 there is another option then an oem crank sensor? all my sensors are stock with stock wiring harness..... Ya i think a scope is a good idea..at this point i have to bring it to a seriously skilled mechanic any suggestions around here??? im just north of san Francisco california. Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted September 28, 2009 Share Posted September 28, 2009 Not familiar enough with the AEM to tell you. The TEC II comes with a magnetic pickup that can be used with various diameter trigger wheels. Electromotive advertised a mod that could be done to the OEM trigger wheel to use the OEM pickup but it did not work. Engine would fire up and idle fine but break up badly as RPMs increased. Went to a 7" external trigger wheel and ran fine. You could have a bad OEM pickup and trying another should be easy. I would go to supraforums and see who has a great rep for working with AEM, contact that person offline, and see if they can help. Start off by offering to pay for the service and see where it goes from there. You do not want to get into an open forum technical discussion there like you can do here. Quote Link to comment Share on other sites More sharing options...
Vette Powered Posted September 29, 2009 Share Posted September 29, 2009 I have a SC300 with a AEM standalone setup. I'm a long ways from you but I know the guys a Boost Logic. They built my SC. Anyway, if you would like to call them and talk a bit they will be a huge help. They are very well known and advertise on the Supra/Lexus Forums. Let them know you talked to Tad and I said they might be helpful. Just tell them I have the white Lexus. http://www.boostlogic.com/ Quote Link to comment Share on other sites More sharing options...
garvice Posted September 29, 2009 Share Posted September 29, 2009 Do you still have the factory computer? Could you plug that in and see if it still revs (I know your engine is a lot different then stock, but it should still rev past 2500rpm with the factory one). That will eliminate the computer or sensors. Quote Link to comment Share on other sites More sharing options...
stony Posted September 29, 2009 Share Posted September 29, 2009 Not with 1000cc injectors installed. Quote Link to comment Share on other sites More sharing options...
garvice Posted September 29, 2009 Share Posted September 29, 2009 Good point, I retract my previous statement. Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 29, 2009 Author Share Posted September 29, 2009 today hopefully im going to try a buddys supra aem box and see what happons Quote Link to comment Share on other sites More sharing options...
Meph Posted September 30, 2009 Share Posted September 30, 2009 Im running a 1jz on the stock 12 tooth trigger wheel with my Haltech system and it seems to be working fine, so I think it would all be fine. Try a second ecu, thats how i cured my 2 month no-start issue Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 30, 2009 Author Share Posted September 30, 2009 Yesterday i was able to barrow a friend of mines supra aem ems. Plugged it into my car..did not change anything...and it revved to over 3500 rpms then started limiting...so at this point im almost positive its just tuning!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted September 30, 2009 Author Share Posted September 30, 2009 Quote Link to comment Share on other sites More sharing options...
stony Posted September 30, 2009 Share Posted September 30, 2009 Christ go pay 300 bux and get it on a dyno!!!! and be done with it. Quote Link to comment Share on other sites More sharing options...
Overkill Z Posted October 1, 2009 Author Share Posted October 1, 2009 LOL STONY..... out here 300 bucks is prob 3 hours of dyno time and then you have to pay the tuner 100 bucks an hour on top of that Quote Link to comment Share on other sites More sharing options...
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