Killtodie Posted August 12, 2011 Author Report Share Posted August 12, 2011 (edited) k, I unplugged the knock sensor, no difference. What does this mean? Here is the bad looking sensor in question http://img171.imageshack.us/img171/7661/knockx.jpg Edited August 13, 2011 by Killtodie Link to comment Share on other sites More sharing options...
Indiana Posted August 13, 2011 Report Share Posted August 13, 2011 You have a volt meter and a FSM? Look in section for the ECI checker chart and it will tell you the voltages to the ECU caused by the knock sensor. Whether or not that causes a drop in timing depends on how severe the signal is seen as. You have separated with wires and you got rid on those metal strap things that separate the wires that could be causing this? Stock were molded plastic over a metal arm not something that can cause a short. Did you replace ALL the wires? If you described this again, the first thing someone would say is the secondary injector is sticking open or its in the wrong position or its spray angle is really wrong or fuel pressure is off. Low fuel pressure will cause an injector to spray more fuel because it can't spray it, it sort of steams it. You have any idea what your fuel pressure is? http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/262972_1480831478942_1778479606_741568_2139358_n.jpg http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc6/283466_1480832398965_1778479606_741571_5760443_n.jpg Link to comment Share on other sites More sharing options...
Killtodie Posted August 13, 2011 Author Report Share Posted August 13, 2011 (edited) Fuel pressure is 41 at idle, dont have a way to view it under load. I replaced the first 3 wires with a spare set I had, I did not have a 4th wire but I replaced it with a temp accel wire I had, made no difference. The metal straps are from NGK, they came with the wires. Why would they give you a part that can cause problems? I've seen quest owners who have their ignition wires zipties together all twisted and have no problems. Im going to go buy another set of NGKs and then warranty replace the current ones using the recent purchase. Edited August 13, 2011 by Killtodie Link to comment Share on other sites More sharing options...
Caliber308 Posted August 13, 2011 Report Share Posted August 13, 2011 Fuel pressure is 41 at idle, dont have a way to view it under load. I replaced the first 3 wires with a spare set I had, I did not have a 4th wire but I replaced it with a temp accel wire I had, made no difference. The metal straps are from NGK, they came with the wires. Why would they give you a part that can cause problems? I've seen quest owners who have their ignition wires zipties together all twisted and have no problems. Im going to go buy another set of NGKs and then warranty replace the current ones using the recent purchase. Link to comment Share on other sites More sharing options...
Caliber308 Posted August 13, 2011 Report Share Posted August 13, 2011 (edited) Fuel pressure is 41 at idle, dont have a way to view it under load. I replaced the first 3 wires with a spare set I had, I did not have a 4th wire but I replaced it with a temp accel wire I had, made no difference. The metal straps are from NGK, they came with the wires. Why would they give you a part that can cause problems? I've seen quest owners who have their ignition wires zipties together all twisted and have no problems. Im going to go buy another set of NGKs and then warranty replace the current ones using the recent purchase. Toadie, How many times have different members told you to install a Wideband ? And how to go about taping a Fuel Pressure gauge to the windshield to read your FP on boost? We are trying to give you advice but your not following it !!!! Bill Edited August 13, 2011 by Caliber308 Link to comment Share on other sites More sharing options...
Indiana Posted August 13, 2011 Report Share Posted August 13, 2011 Why is fuel pressure so high? Remove the metal wire straps and get the injectors cleaned. If new OEM plug wires can misfire under boost and they even have a specific orientation for them why would you ignore it and wrap them all together in a metal strap on purpose? Link to comment Share on other sites More sharing options...
Killtodie Posted August 13, 2011 Author Report Share Posted August 13, 2011 I ordered new wire plugs. wideband will come when i have the money getting the fuel gauge to the window also take money. those hoses and fittings are not cheap Link to comment Share on other sites More sharing options...
Indiana Posted August 13, 2011 Report Share Posted August 13, 2011 When you get some cleaned properly flowing injectors too it will run great. Link to comment Share on other sites More sharing options...
Caliber308 Posted August 14, 2011 Report Share Posted August 14, 2011 (edited) getting the fuel gauge to the window also take money. those hoses and fittings are not cheap A three foot piece of Fuel hose, some brass fittings from Ace Hardware and a couple pieces of Duct Tape will break you?????COME ON Bill Edited August 14, 2011 by Caliber308 Link to comment Share on other sites More sharing options...
Killtodie Posted August 14, 2011 Author Report Share Posted August 14, 2011 and fittings. yes, i know its cheap. but those parts are overpriced here. its gonna be like $15 for $2 worth of material. In other news, I bought a new set of NKG wires, put them in, found one of the stock wire holders, cleaned it up and installed it. I'll be driving the car later and see if it made any difference. Link to comment Share on other sites More sharing options...
Indiana Posted August 14, 2011 Report Share Posted August 14, 2011 Well that was about 3 1/2 hrs ago I hope you're not broke down somewhere. Link to comment Share on other sites More sharing options...
Killtodie Posted August 14, 2011 Author Report Share Posted August 14, 2011 I had a change of plans and didn't go out tonight. So I haven't bothered to start the car, its also wet and I don't want to track dirty ally water into my recently cleaned garage, I'll go tomorrow. Link to comment Share on other sites More sharing options...
Killtodie Posted August 14, 2011 Author Report Share Posted August 14, 2011 New ignition wires and stock wire management clips did not solve this issue. Link to comment Share on other sites More sharing options...
wrngwae Posted August 14, 2011 Report Share Posted August 14, 2011 have you pulled the mixer top off and see if the screens that filter before the injectors are dirty? if so you can blow compressed ari backwards thru it to clean it out. do not remove those screens either. just a thought. Link to comment Share on other sites More sharing options...
Killtodie Posted August 15, 2011 Author Report Share Posted August 15, 2011 I'm going to swap injectors with a local when I get a chance and inspect all the screens. -Swap injectors-get a new knock sensor-Replace high pressure fuel filter-get a new fuel pump-buy a wideband when I can afford the $200 Link to comment Share on other sites More sharing options...
Indiana Posted August 15, 2011 Report Share Posted August 15, 2011 Just send the injectors off to be cleaned. Link to comment Share on other sites More sharing options...
Blue Posted August 15, 2011 Report Share Posted August 15, 2011 Just send the injectors off to be cleaned.http://witchhunter.com Link to comment Share on other sites More sharing options...
Indiana Posted August 15, 2011 Report Share Posted August 15, 2011 No matter what, that's the first thing that should be done when anyone buys one of these cars. Get it over with immediately its the source of MANY issues. The one thing the ECU controls to dispense metered fuel and people think that just because they spray they are fine and 99.9% of the time they are not. Link to comment Share on other sites More sharing options...
Killtodie Posted August 23, 2011 Author Report Share Posted August 23, 2011 I wont be able to afford a wideband till mid september or so. in the meantime, the car seemed to have improved a bit. I do notice a cloud of dark smoke out the exhaust when it missfires, it's currently back to just doing one missfire/fuel cut like event rather then the farting out of the exhaust. Had no time to try any more troubleshooting. No luck on finding a replacement knock sensor but I dont think its causing any problems, it might still be bad though. Link to comment Share on other sites More sharing options...
Technology Posted August 23, 2011 Report Share Posted August 23, 2011 I doubt it's the knock sensor. if it doesn't change anything when unplugged, then it's not the issue. knock sensors are peizo electric devices. generate voltage when they detect sound (within a certain range, tuned for it's application) like a phone. Link to comment Share on other sites More sharing options...
Killtodie Posted August 27, 2011 Author Report Share Posted August 27, 2011 I turned my boost down to about 11psi and it wont missfire. i can floor it all day long. no problems. but as soon as I take it above 15 it starts to missfire. this cant be normal. what does this narrow the problem down to? Link to comment Share on other sites More sharing options...
Indiana Posted August 27, 2011 Report Share Posted August 27, 2011 DIRTY INJECTORS Link to comment Share on other sites More sharing options...
Killtodie Posted August 28, 2011 Author Report Share Posted August 28, 2011 I'm going to try to swap em out with someone at the All Mitsu Meet and see if that makes any difference. Link to comment Share on other sites More sharing options...
polarisman14 Posted August 28, 2011 Report Share Posted August 28, 2011 As long as you find someone who has just gotten them cleaned, then that'll be a worthwhile change. Otherwise you're just trading with someone who may have the same issue you're having provided they were running 15+psi. Link to comment Share on other sites More sharing options...
Shelby Posted August 29, 2011 Report Share Posted August 29, 2011 (edited) Raspberries? http://www.starquestclub.com/forum/public/style_emoticons/default/unsure.gif Does the sound sound like a shrieking noise? If so, you have a loose exhaust manifold fastener(s), loose fasteners at the turbo to exh manifold or the fasteners holding the down pipe to the waste gate casting are loose. It could also be the exhaust housing volute/waste gate to the turbo cartridge attachment clamp's nut is loose. For What It's Worth. KEN this nose is being cause'd by an air leak , two primary places that are the normal cause is the 90 degree rubber hose on the ic out and the connector at the inj houseing to OVC pipe and of course any of these cheaper couplors you buy on ebaythe hose splits and pressure causes them to open and make the noise the loss of air volume causes the ecu to over run the fuel mix and fuel cut is the result Edited August 29, 2011 by Shelby Link to comment Share on other sites More sharing options...
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