onefine,fivedime Posted February 11, 2013 Report Share Posted February 11, 2013 hows it going guys! so im running a single cam ka, and have been successfully for a year now (woo!) . but one of the main issues I have, that im not sure where to start looking is, when im in 5th gear on the fwy, if I hit 3500 rpm, I cant accelerate further until it drops back down to 3100... If I creep past it i can go all the way to whichever . but the second i get on that gas even a little harder it cuts and wont let me till 3100.. any ideas?? i have no egr system, but didn't remove the butterflies from the intake manifold. but after taking apart my extra motor i found that they are stuck open if you leave the little actuator attached ( like i did)... i have no lower harness to my trans,,. . speed sensor?? (speed sensor circuit is one of the codes in throwing) anyone else have one hooked up? (and how).. umm... that's all i can really think of at the moment. i appreciate any help given! id like this thing running with no flaws =) 1 Quote Link to comment
jesusno2 Posted February 11, 2013 Report Share Posted February 11, 2013 need a #11 ecu or #14 automatic ecu. 1 Quote Link to comment
DeviousPsycho620 Posted February 11, 2013 Report Share Posted February 11, 2013 Mine does that on accusation. Mine appears to be the maf sensor. My pig tail is shot. Check your maf . Also i was told to tap on it lightly before you start it. Hope this helps. 2 Quote Link to comment
datzenmike Posted February 11, 2013 Report Share Posted February 11, 2013 The 5 speed ECUs have a rev limiter and need speed sensor input. Without it it acts all goofy. I guess this is so it won't over rev on a missed shift. An automatic ECU does not have or need the rev limiter. Post your ECU number and I can tell you if you have the wrong one. 2 Quote Link to comment
onefine,fivedime Posted February 11, 2013 Author Report Share Posted February 11, 2013 that all makes complete sense! .. my ecu is a #14.. does that means it is an auto?.. also.. i just remembered that my motor and ecu were from one car, and harness from another. can that pose a problem? i believe my harness is an 89 because its missing the air intake temp sensor. pigtail (which is another code im throwing) 1 Quote Link to comment
datzenmike Posted February 11, 2013 Report Share Posted February 11, 2013 The other number like A11-B0G349 auto S13 '89 1 Quote Link to comment
jesusno2 Posted February 11, 2013 Report Share Posted February 11, 2013 Ya might have some other issues then. I had both #11 ecu and #14 in my 12v wagon. both worked the same. as far as the codes I could not tell a difference with AIT sensor and without it. It threw a code with a new one hooked up to a auto ecu anyways. But i did hook up the throttle switch side of the tps which some have said were for automatics only. 1 Quote Link to comment
FiveSeventyZee Posted February 11, 2013 Report Share Posted February 11, 2013 wow, mine's been doing this for months....I have an #11 auto ecu lying around in my room too....I knew in the back of my head it was supposedly better for the 510 swap but I couldn't figure out why....well, I feel dumb, time to go test that 2 Quote Link to comment
onefine,fivedime Posted February 11, 2013 Author Report Share Posted February 11, 2013 The other number like A11-B0G349 auto S13 '89 oh gotcha! my bad :a11-b17g13 1 Quote Link to comment
datzenmike Posted February 11, 2013 Report Share Posted February 11, 2013 California 1989 5 speed S13. 1 Quote Link to comment
onefine,fivedime Posted February 11, 2013 Author Report Share Posted February 11, 2013 The other number like A11-B0G349 auto S13 '89 so I need this get this one^^ ? you think itll get rid of my problem? (well, sounds like it will!) 1 Quote Link to comment
Icehouse Posted February 11, 2013 Report Share Posted February 11, 2013 I've always used the 11 ECU, the others had the cut out problem. I even went as far as trying to figure out what I could jumper on the other ECU's to get the problem to go away. I couldn't figure it out so I just use the 11's now. Good thing single cam shit is cheap. None of the other engines have this problem which is weird to me. 1 Quote Link to comment
onefine,fivedime Posted February 12, 2013 Author Report Share Posted February 12, 2013 I've always used the 11 ECU, the others had the cut out problem. I even went as far as trying to figure out what I could jumper on the other ECU's to get the problem to go away. I couldn't figure it out so I just use the 11's now. Good thing single cam shit is cheap. None of the other engines have this problem which is weird to me. got it! thanks a lot!, im in process of hunting one down. even though you all know the outcome I shall post my results here! (I am throwing a few other codes, wonder if those will go away too) ... air intake temp sensor circuit is one of them... does that mess with performance at all? when I took it to get dynoed (125 hp and 139 lbs ft of torque by the way!! not bad for a tired single cam) he said it was running super rich. intake temp mess with that? 1 Quote Link to comment
datzenmike Posted February 12, 2013 Report Share Posted February 12, 2013 Most of the sensors are needed to bring the a/f ratio as close as possible to the stored fuel map in the ECU. This gives the best economy/emissions and performance. Of course the performance takes a back seat to the first two. The O2 sensor gives feedback so the ECU can fine tune the a/f ratio. Warn air would be less dense so less gas needed... but it's a very small amount and would still run when the motor is warmed up. Everything in total gives the best a/f ratio. 2 Quote Link to comment
jimmer84 Posted February 12, 2013 Report Share Posted February 12, 2013 that all makes complete sense! .. my ecu is a #14.. does that means it is an auto?.. also.. i just remembered that my motor and ecu were from one car, and harness from another. can that pose a problem? i believe my harness is an 89 because its missing the air intake temp sensor. pigtail (which is another code im throwing) We had a similar problem with my rallycar. had a harness from a truck and sensors/engine from a car. I had 2 problems. One was the the wiring to the MAF was different then the pins on the MAF itself. Had to rewire the harness and that fixed the running rich and some stumbles it had. The other was the 5-speed/auto ecu thing. With the 5.13 differential, it would only go 80mph. I went on car-part.com and found an auto ecu. been running great for 3 years now... 2 Quote Link to comment
FiveSeventyZee Posted February 19, 2013 Report Share Posted February 19, 2013 not sure if youve found a proper ecu yet but if not just an FYI, if you pop the clutch in (dusengage the tranny) and tap the gas you'll get power back immediately without having to wait for the revs to drop back down below 3kish. that's what I've been doing lol 2 Quote Link to comment
onefine,fivedime Posted February 22, 2013 Author Report Share Posted February 22, 2013 not sure if youve found a proper ecu yet but if not just an FYI, if you pop the clutch in (dusengage the tranny) and tap the gas you'll get power back immediately without having to wait for the revs to drop back down below 3kish. that's what I've been doing lol haha! really?!? im getting my ecu today but im gonna have to try that! lol ...dammit if it works!! x) 1 Quote Link to comment
onefine,fivedime Posted February 22, 2013 Author Report Share Posted February 22, 2013 California 1989 5 speed S13. hey datzenmike, im getting the correct ecu today but was wondering if you wouldn't mind telling me which this is for? a11-a43-g42 .. stilltwisted is going to use it in his swap, and was going to let me borrow it to try it out , but obviously there isn't a point in doing so since the numbers are way off. thanks! 1 Quote Link to comment
onefine,fivedime Posted February 23, 2013 Author Report Share Posted February 23, 2013 Ok guys, bad news. I finally got a hold of the #11 ecu and put it in. It didn't work :( everything else. Is working great nut as soon as I come up on 3500. It shuts me down.... any ideas?? Thanks 1 Quote Link to comment
datzenmike Posted February 23, 2013 Report Share Posted February 23, 2013 hey datzenmike, im getting the correct ecu today but was wondering if you wouldn't mind telling me which this is for? a11-a43-g42 .. stilltwisted is going to use it in his swap, and was going to let me borrow it to try it out , but obviously there isn't a point in doing so since the numbers are way off. thanks! A11-A43-G42... '89 S13 KA24E 9.0 compression California manual trans. 1 Quote Link to comment
jesusno2 Posted February 23, 2013 Report Share Posted February 23, 2013 does it have a BIG #11 on it I thinkthey all say A11 blah blah blah on them. 1 Quote Link to comment
onefine,fivedime Posted February 23, 2013 Author Report Share Posted February 23, 2013 It does! Big 11 1 Quote Link to comment
onefine,fivedime Posted February 25, 2013 Author Report Share Posted February 25, 2013 I was wrong!... not sure how 0_o its a big 14.. auto im guessing.. need an 11,,:( 1 Quote Link to comment
datzenmike Posted February 25, 2013 Report Share Posted February 25, 2013 does it have a BIG #11 on it I thinkthey all say A11 blah blah blah on them. There can be a Large #11 or #14 on the outer case followed by a smaller part number like A11-B17-G04 They don't all say A11-???-??? on the part number, only some '89s do, but yeah the vast majority have the A11 prefix. 1 Quote Link to comment
DottiBlue Posted March 11, 2014 Report Share Posted March 11, 2014 Found this. Going through the same issue. http://jimwolftechnology.com/wolfpdf/ecu-id.pdf 1 Quote Link to comment
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