Kristian_Wraae Posted August 2, 2016 Share Posted August 2, 2016 I had a strange experience yesterday. I have a 2JZ-GTE med an Apexi Power FC standalone and suddenly the check engine light came on. Checking the hand controller I could see that it was warning of massive knock even at idle. The car drove completely normal. I then drove home slowly and after 10 mins or so when I was stopped at a traffic light the knock warning stopped and all was normal. During the knocking the timing was 10 degrees. No other sensors were strange. AFR was 14.7 and EGT around 430 C. When I came home I put it in neutral and reved it a few times to 6000 rpm and there was a little activity from the knock sensors as normal (so I could verify that they were still giving out a signal) What could cause this apart from maybe a failing sensor/wiring? Quote Link to comment Share on other sites More sharing options...
mellonman Posted August 3, 2016 Share Posted August 3, 2016 Maybe not actually knock/ det but maybe a crank pulley or someother knocking sound like a loose bolt Quote Link to comment Share on other sites More sharing options...
David P Posted August 3, 2016 Share Posted August 3, 2016 (edited) Maybe an injector is sticking and running one pot lean. The 14.7 reading could be the ECU adjusting an average out of all 6 keeping the O2 sensor happy. Edited August 3, 2016 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
Kristian_Wraae Posted August 3, 2016 Author Share Posted August 3, 2016 Maybe an injector is sticking and running one pot lean. The 14.7 reading could be the ECU adjusting an average out of all 6 keeping the O2 sensor happy. Do you think that it will make it knock at idle? Quote Link to comment Share on other sites More sharing options...
David P Posted August 3, 2016 Share Posted August 3, 2016 Check the plugs and see if one shows evidence of under fuelling. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 3, 2016 Share Posted August 3, 2016 Do you think that it will make it knock at idle? No, very unlikely, would need to be loaded up. Does the PFC read both stock knock sensors or just one of them? If just one try swapping them over. I would imagine you would hear, and feel in how the engine was running, if you *REALLY* had massive knock. Anyway, without my glasses I initially thought the thread title was massive knockers, so i am bored with it now Quote Link to comment Share on other sites More sharing options...
Annabella Posted August 3, 2016 Share Posted August 3, 2016 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 3, 2016 Share Posted August 3, 2016 I'm disappointed too, Anyway knock sensors do fail and also wear with age, so can generate spurious signals, also with a modified and/or worn engine, some things can generate noise and a frequency that is the same as the knock sensors listen for. Quote Link to comment Share on other sites More sharing options...
Guest Dexter max Posted August 8, 2016 Share Posted August 8, 2016 I also had massive knocking sound from2jz-ge engine. Before that i have overhaul my engine head after that i was riding for a test ride, suddenly that sound come from the engine and come back to home. I have checked timing its perfect. can any one help me to fix this. Do i have to do a full overhaul or whats shell i do ??? Quote Link to comment Share on other sites More sharing options...
Dnk Posted August 8, 2016 Share Posted August 8, 2016 I also had massive knocking sound from2jz-ge engine. Before that i have overhaul my engine head after that i was riding for a test ride, suddenly that sound come from the engine and come back to home. I have checked timing its perfect. can any one help me to fix this. Do i have to do a full overhaul or whats shell i do ??? My first advice would be start your own thread which will then focus replies to your problem and to the forum Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 8, 2016 Share Posted August 8, 2016 And Top Secret is not very useful as a location if you want someone local to you to offer to help. Are you not English? Or are you using one of those devices that thinks it knows what you want to type, and makes you look like English is not your native tongue? Quote Link to comment Share on other sites More sharing options...
David P Posted August 8, 2016 Share Posted August 8, 2016 And Top Secret is not very useful as a location if you want someone local to you to offer to help. Are you not English? Or are you using one of those devices that thinks it knows what you want to type, and makes you look like English is not your native tongue? Dick licks it. Quote Link to comment Share on other sites More sharing options...
chrispot Posted August 10, 2016 Share Posted August 10, 2016 Dick licks it? I could not reed or right so I had some daily sex lessons, not quite what I expected but fcuking good fun. Quote Link to comment Share on other sites More sharing options...
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