Rocky88 Posted December 1, 2008 Share Posted December 1, 2008 Last week during a cruise on a freeway my R32 (RB20DET) all the suddenly started to sound like WRX - it got really deep sound, kinda like truck. and it became noticeably slower and its shaking like hell (there's no rattling noise or anything like that though)... First thought was faulty spark-plug, but then all the suddenly it fixed itself... It was alright for a while but then it started doing it again... It's alright at the moment but it's still happening at times, usually after driving for a while... Should replacing spark plugs fix the issue or is it something I should be concerned about? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/ Share on other sites More sharing options...
blind_elk Posted December 1, 2008 Share Posted December 1, 2008 More likely a failing igniter module - they don't like lots of heat after a while. Could also be a leaking injector flooding the spark plug. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4294833 Share on other sites More sharing options...
ClutchBurndout-:( Posted December 2, 2008 Share Posted December 2, 2008 have you checked your exhaust is all tight and no loose bolts etc? my car did the exact same thing when my cat started to disconnect from the front pipe Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4295318 Share on other sites More sharing options...
RustyR32Gtst Posted December 2, 2008 Share Posted December 2, 2008 Coil ??? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4296277 Share on other sites More sharing options...
CRoNic... Posted December 2, 2008 Share Posted December 2, 2008 Check coil packs, plugs, etc. And cross your fingers!! Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4296522 Share on other sites More sharing options...
Rocky88 Posted December 7, 2008 Author Share Posted December 7, 2008 coils were alright... it was sparks. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4304957 Share on other sites More sharing options...
Rocky88 Posted December 9, 2008 Author Share Posted December 9, 2008 hmmm... too early to celebrate. Today my car started making the same sound but only briefly. While servicing the engine I spotted 3 studs have snapped off the manifold. I'm planning to get studs fixed and replace gasket on the manifold as soon as I can afford... I just want to know if that might be reason for the weird wrx sound and temporary loss of power. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4308843 Share on other sites More sharing options...
PUDZ 32R Posted December 9, 2008 Share Posted December 9, 2008 an exhaust gasket that is gone will make that noise but it will almost certainly be all the time,, not only every now and then. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4308877 Share on other sites More sharing options...
Rocky88 Posted December 9, 2008 Author Share Posted December 9, 2008 an exhaust gasket that is gone will make that noise but it will almost certainly be all the time,, not only every now and then. yea... that's pretty much what I thought. And gasket is still in fair condition and manifold is not causing any problems at the moment eithers. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4308903 Share on other sites More sharing options...
Rocky88 Posted December 11, 2008 Author Share Posted December 11, 2008 So it got much worse and it's pretty much doing it all the time now... It's really annoying so I want to fix it asap. I came to decission that's it's probably stuffed coil packs. Just cant afford to spend $600 on splitfires so I wanted to know what are more affordable options out there. 2nd hand stock coil packs? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4312765 Share on other sites More sharing options...
Luciano Posted December 11, 2008 Share Posted December 11, 2008 Like blind elk said, try swapping your ignitor with a friends, Rok. Still, you can't rule out the coils like you say. I found that the standard coils are actually pretty tough - mine were scorched, melted, and hammered - they weren't performing their best, so I taped them em up for a temporary fix, and they performed a lot better - got rid of some slight misfiring through rev range. I bought a brand new set of superspark coils, installed, and found that they really don't perform a hell of a lot better (as they claim), than the standard ones taped up... I reckon rule out the ignitor before you spend $ on coils Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4313482 Share on other sites More sharing options...
shepo Posted December 11, 2008 Share Posted December 11, 2008 i garantee it will be the coil packs. it will be hard to find which one it is, but it will start getting worse and worse. what you can do is pull the cover off, let the car run until it starts to miss fire. then disconnect the coil packs one by one. with each one you disconnect the idle should get even rougher, until you disconnect one and the idle doesnt change. then you have found your faulty coil pack. same thing has hapend to me with both my skylines. with my old gts-t i just replaced them one at a time as they went. but with my gtr i lashed out and got a set of splitfires. i can highly recomend the splitfires. ive never had a problem with them. hope this has been a help. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4313566 Share on other sites More sharing options...
Rocky88 Posted December 12, 2008 Author Share Posted December 12, 2008 Like blind elk said, try swapping your ignitor with a friends, Rok. Still, you can't rule out the coils like you say. I found that the standard coils are actually pretty tough - mine were scorched, melted, and hammered - they weren't performing their best, so I taped them em up for a temporary fix, and they performed a lot better - got rid of some slight misfiring through rev range. I bought a brand new set of superspark coils, installed, and found that they really don't perform a hell of a lot better (as they claim), than the standard ones taped up... I reckon rule out the ignitor before you spend $ on coils Yea... aftermarket coil packs making more hp than stock ones is pretty much just a myth from what I heard from many people. And as long as maintained properly stock ones should also last longer than aftermarket. The only exception is probably splitfires but even they are probably not much better than stock ones. i garantee it will be the coil packs. it will be hard to find which one it is, but it will start getting worse and worse. what you can do is pull the cover off, let the car run until it starts to miss fire. then disconnect the coil packs one by one. with each one you disconnect the idle should get even rougher, until you disconnect one and the idle doesnt change. then you have found your faulty coil pack.same thing has hapend to me with both my skylines. with my old gts-t i just replaced them one at a time as they went. but with my gtr i lashed out and got a set of splitfires. i can highly recomend the splitfires. ive never had a problem with them. hope this has been a help. Thanks man. I'll try disconnecting them when I get time to see which one is stuffed and I'll replace it with stock one for now. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4314082 Share on other sites More sharing options...
buggor34 Posted December 15, 2008 Share Posted December 15, 2008 possibly afm. Good idea to give it a good clean with some co-contact cleaner. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4319370 Share on other sites More sharing options...
jnr_chin Posted December 15, 2008 Share Posted December 15, 2008 that happens sometimes because of slack connection. the result would be the firing of only 5 coils firing. the car will drive but with less power and the subi sound. the engine will become unbalanced hence unstable causing vibration 1. slack connection on the air flow meter. pins not making contact etc. 2. slack connection on one of the injector plug on 3. slack connection on the right hand side of the igniter (the end going to the plugs) because current is flowing from pin to pin sometimes if not connected properly when the car shakes too much, it will happen and act back normal because of the arcing of the current flowing. the best bet is when this is happening fly the bonnet and check connections one by one to see which one stops it. if you are able to use a 12 volt tester you can also check the connection to the coils itself. dont rule out any parts but i doubt those are any trouble. the muffler has nothing much to do with how the engine reacts in this situation. without the muffler the engine can feel and sound very smooth. Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4319543 Share on other sites More sharing options...
Rocky88 Posted December 17, 2008 Author Share Posted December 17, 2008 today i finaly had time to take off the engine cover and check the coil packs... after running the car and disconnecting one after another i found a faulty one, so its definitely a coil pack thats gone. the only problem is that the replacement one I bought has different connector that ones found in my car. coil packs in my r32 are mcp-300 with three horizontal pins, while the one i got is mcp-200 with three vertical pins... which skyline uses ones with vertical pins? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4323326 Share on other sites More sharing options...
Rocky88 Posted December 18, 2008 Author Share Posted December 18, 2008 replaced coil and its still doing it... and i have 2 hours till vehicle inspection to clear defect... can i pass vehicle inspection with car misfiring??? what is it if its not coil? loom? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4325193 Share on other sites More sharing options...
arbess Posted December 18, 2008 Share Posted December 18, 2008 have you considered a compression test on your engine? Electrical issues, such as coil packs, may occur else where around the engine along the wiring. If you have read any of my post you will see my frustration in trying to find my WRX issue. Good luck Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4325331 Share on other sites More sharing options...
Rocky88 Posted December 29, 2008 Author Share Posted December 29, 2008 so the problem just got even weirder... the last possible suspect was fuel injector... so i had my mechanic to take it out and clean it. after that i started car and it was running perfectly. but then after 5 minutes it started missing badly again... so i unplugged the injector to check contacts, plugged it back in and car ran smoothly again so i took it for a spin again and after driving for couple of minutes it started missing again. usually starts in 2nd gear after 2,500 revs, but not while idling, no matter how high revs... so i unplugged it, plugged it back in and again car ran perfect for short time. After plugging injector usually car runs smoothly in 1st gear, in 2nd gear it starts stuttering a bit at 2,500 revs, and then same in 3rd and 4th and then after minute or two it starts misfiring badly again. i just dont get it cause injector connector is firmly secured with the staple-looking thing...there doesnt seem anything wrong with connection because i tested it with multimeter... Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4339145 Share on other sites More sharing options...
CRoNic... Posted December 30, 2008 Share Posted December 30, 2008 Have you done a compression/leak down test yet on the engine? Link to comment https://www.sau.com.au/forums/topic/247304-my-r32-sounds-like-wrx/#findComment-4341197 Share on other sites More sharing options...
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