brenden Posted May 25, 2021 Share Posted May 25, 2021 Hi, I am on the hunt for an ORI file for this BA XR8, the editor does not show an ORI for the tear tag A3AK & PCM MODEL ABU-251, or is there another SW version that is the same I can use ??? long story short, I'm having issues with this customers car after he attempted to knife edge his throttle body..... we have replaced the throttle body and still having the same issues as it come in with, wont idle right and keeps throwing 2 DTC's - Code: P1270 - Engine RPM or Vehicle Speed limiter reached -Code: P2110 - Throttle Actuator Control System - Forced Limited RPM it has been tuned with an STC tuner and has had the PCM replaced by another shop witch iv tried to correct, not I'm not sure on the ORI file that was used and I want to rule out the "ORI" file that's on the PCM being the issue. any help would be great! I have attached the file that car come in with. ORI AS ARRIVED.tec Quote Link to comment Share on other sites More sharing options...
brenden Posted May 25, 2021 Author Share Posted May 25, 2021 (edited) this is what its doing, idle is normally a lot worse then this IMG_2269.MOV Edited May 25, 2021 by brenden Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 25, 2021 Share Posted May 25, 2021 There is a file for HABN9K3 available in our file repository. This is one of a few that is a read out of a vehicle and not a true stock file from Ford however as the PHF for this strategy is not available. You can tell as there is a VIN within this file. Looking at your file it is identical to our "stock" file though. So I would be reasonably confident it is indeed stock. To view this file use the following. There are 3 other stock files you can also compare against as well. HABN9A3 - Auto (uses different injectors to yours) HABN9L2 - Auto (same injectors as yours) HABN9M2 - Manual Quote Link to comment Share on other sites More sharing options...
brenden Posted May 25, 2021 Author Share Posted May 25, 2021 Love your work roland! cheers! ill have a look and see what I can do, I'm not 100% convinced it is the file on the car but we are running out of ideas and tests to do as everything is testing ok haha Quote Link to comment Share on other sites More sharing options...
brenden Posted May 25, 2021 Author Share Posted May 25, 2021 another thing we found is if we remove the MAP sensor from the manifold and block the hole for it its doesn't fail......... everything is testing like it should with our scope and we have replaced it just incase Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 25, 2021 Share Posted May 25, 2021 Datalog the map pressure and see if its in a fault status. If it is it will read barometric pressure of 101kpa or 29 inHG What is the spark timing when it is struggling to idle? If you have a large air leak it will peg at min timing eg -5 degrees. If the idle continues to increase with the spark pegged it will kill fuel to stop the engine over revving. This usually results in what sounds like a supercharger lope idle. I would be betting on an airleak personally. Smoke test the intake with the throttle blade open. The fact it has been off/modified and its an old BA you probably have a split/torn seal or hose clamp somewhere. Can you attach a datalog including spark/map/TPS etc. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 25, 2021 Author Share Posted May 25, 2021 ba xr8.fsl here's a log from forscan Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 25, 2021 Share Posted May 25, 2021 Can you log it with the editor? Quote Link to comment Share on other sites More sharing options...
brenden Posted May 25, 2021 Author Share Posted May 25, 2021 iv got the intake manifold off it and looks like it may have blown a seal.. once its back together ill log it with PCMtec Quote Link to comment Share on other sites More sharing options...
brenden Posted May 26, 2021 Author Share Posted May 26, 2021 Iv replace all intake seals from the head's to the throttle body. iv attached a log below. We don't no what or where to go from here, everything seems to be testing ok both sensor's and wiring. thank you for your help and time ! BA XR8 ENGINE DATA LOG.teclog Quote Link to comment Share on other sites More sharing options...
brenden Posted May 26, 2021 Author Share Posted May 26, 2021 also the MAP is reading 99-101 KPA with KOEO witch is spot on for where we are Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 26, 2021 Share Posted May 26, 2021 Was the motor on a stone cold start? You are idling at -10 deg timing. If it was warm you 100% you have an airleak. You need to do a proper smoke test. If it was cold get it warm and do a proper log then showing the symptoms as that log wasn't jumping around too bad. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 26, 2021 Author Share Posted May 26, 2021 yeah that was a 1st start up for the day, ill get it to temp and relog. If there is an air/vac leak.... its got us stuffed where it is as we smoke tested it this morning after resealing the intake and can not find anything Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 26, 2021 Share Posted May 26, 2021 Was the throttle open when you did the smoke test though? Quote Link to comment Share on other sites More sharing options...
brenden Posted May 26, 2021 Author Share Posted May 26, 2021 yeah we did the smoke test twice, once with it open and again with it shut, its running around 17 in/HG manifold vac at the idle its running (900rpm or so). BA XR8 ENGINE DATA LOG RUNNING TEMP.teclog Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 26, 2021 Share Posted May 26, 2021 Spark is still at ~0 to -5 deg and your idle is 900rpm. Must be an air leak somewhere still. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 26, 2021 Author Share Posted May 26, 2021 We have replaced all VAC lines, blocked the brake booster (incase of an internal leak), new PCV, when we had the manifold and everything off we inspected it for crack's though none found, if there is a leak me or 2 of my other tec's can not find it lol. I'm sitting here with a mate from another work shop and beer's of cause (5:30pm) lol going through all we have done and getting a 2nd set of eyes to go over it and see if he comes up with something. as I said we have run out of idea's and have nothing more to test electrically or mechanically that we can think of. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 27, 2021 Share Posted May 27, 2021 Could an injector be leaking in air? Wouldn't necessarily show up during a smoke test. Also what about the fuel line vents? They don't open unless the engine is running. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 28, 2021 Author Share Posted May 28, 2021 Its' not ideal but i just hit the hole engine bay with our fire hose while it was idling and made no difference, I'm pretty sure if there was a leak we would of found it then. I'm gonna burn this thing hahaha Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 28, 2021 Share Posted May 28, 2021 Put a fuel pressure gauge on it. I'd also pull all the injectors and have them plus the rails cleaned. Seen a few 5.4s that sat in a shed for 3-4 years and rusted out internally blocking 3 injectors. Can also try removing the O2 sensors so it runs in open loop and see what happens. If you have one bank fighting the other they do weird things. Also check the cam timing hasn't jumped a tooth. Clutching at straws but the negative timing and high idle is 99% of the time an air leak. I've seen leaks which don't open up until the engine starts rocking and lots of weird things. That is probably the best I can suggest remotely. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 28, 2021 Share Posted May 28, 2021 I should have checked this first but your fuel source is cylinder cut. Can you add torque source to the log as well as actual throttle angle. You most likely have an ETC fault triggering the cylinder cut out. I would be betting money on the air leak theory. The customer had the throttle off and everything points to this. Could the throttle be damaged or the wrong throttle? Have you tried jamming the throttle shut and seeing if it still idles? They don't have an IAC valve, so it should stall, if it doesn't then it confirms the air leak theory. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 28, 2021 Author Share Posted May 28, 2021 start up with and with out throttle .MOV playing with throttle plate.MOV ba xr8 data log with no throttle on start up.teclog ba xr8 data log with throttle on start up.teclog Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 28, 2021 Share Posted May 28, 2021 So that begs the question if the throttle is shut how is it not stalling? I mean I've never done it on a v8 without an idle problem to compare, but it doesn't sound right that sucking/hissing sound. It sounds like something is sucking open. Quote Link to comment Share on other sites More sharing options...
brenden Posted May 28, 2021 Author Share Posted May 28, 2021 so we fixed it!!! we replaced the brand new FOMOCO perfectly testing throttle body and fixed!!!! i tested both the one that was on it and the new one and there identical.... its got me stuffed hahaha electrically there identical Quote Link to comment Share on other sites More sharing options...
brenden Posted May 28, 2021 Author Share Posted May 28, 2021 just wanna thank you Roland to, you didn't have waste your time back and forth, we really appreciate it ! keep up the great work, your a legend side note, can you guys add a "diagnostic's" part to the forums ? stuff like this may help a lot of people in my situation, someone may have an idea that may help or seen the problem before. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted May 29, 2021 Share Posted May 29, 2021 17 hours ago, brenden said: just wanna thank you Roland to, you didn't have waste your time back and forth, we really appreciate it ! keep up the great work, your a legend side note, can you guys add a "diagnostic's" part to the forums ? stuff like this may help a lot of people in my situation, someone may have an idea that may help or seen the problem before. No worries. When I need a break from programming and all the other stuff we do I don't mind coming on here for something different, the fact you could include logs and videos makes it something worth answering, sometimes we don't get a reply at all or people don't include logs and videos which usually makes it impossible to solve remotely. If I had all the time in the world I would be happy to do more support like this as I like solving problems, issue is we rarely do have the time. Good idea about the forum section. I'll look at adding something. Quote Link to comment Share on other sites More sharing options...
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