Kaz200 Posted April 8, 2012 Share Posted April 8, 2012 Hey guys, having an issue with my s15 (sr20det).. no idea where to start :\ similar issues seen with skylines so yeah.. Car is choking while cruising, feels like its going to stall eventually. Was fine all week until Thurs night and then got progressively worse. Seems worse at 60km/hr or low speed than 80km/hr. If I thrash it, it seems ok..? Maybe? Maybe a related issue that has been going on for a few weeks is when braking to red light, sometimes the revs drop to about 200, cpl of times it has actually stalled on the freeway in heavy traffic/freeway carpark. Have looked at every hose (I think), cannot see a vacuum hose off anywhere.. I thought AFM for the choking issue but swapped it yesterday with a friends and no difference. Plugs were done a few months ago, pulled them out, they seem ok, asked 2 ppl for advice they said they look ok as well.. What else to check? Another friend said o2 sensor but I think my fuel economy would be shit if it was that. No idea when the fuel filter was last done as I haven't had this car long, would that be an issue? Im thinking ignition or fuel at this point but not sure.. Thanks for any help Kaz Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/ Share on other sites More sharing options...
Bsa Posted April 8, 2012 Share Posted April 8, 2012 (edited) How long since fuel filter was replaced dont worry just read it again change that could be a dying fuel pump. What are the mods Edited April 8, 2012 by Bsa Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307566 Share on other sites More sharing options...
Kaz200 Posted April 8, 2012 Author Share Posted April 8, 2012 not much in way of engine mods, just FMIC, GFB Bov, turboback zorst.. yeah thinking I will change fuel filter tomorrow. hopefully not fuel pump otherwise I'm going Walbro LOL Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307576 Share on other sites More sharing options...
Bsa Posted April 8, 2012 Share Posted April 8, 2012 Properly a good idea as the stock one is getting old. Is the bov plumbed back? Could be opening up Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307606 Share on other sites More sharing options...
Kaz200 Posted April 8, 2012 Author Share Posted April 8, 2012 its a GFB bov adjustable from atmo > plumbback Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307624 Share on other sites More sharing options...
W0rp3D Posted April 8, 2012 Share Posted April 8, 2012 You got the standard one to put back on? Worth a try. Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307666 Share on other sites More sharing options...
Kaz200 Posted April 8, 2012 Author Share Posted April 8, 2012 hmm I do actually.. omg would be so sad if its the BOV I love the noise haha.. I'm a girl tho, I'm allowed! Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307851 Share on other sites More sharing options...
W0rp3D Posted April 8, 2012 Share Posted April 8, 2012 Lol, fast and furious girl! Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6307853 Share on other sites More sharing options...
DVS JEZ Posted April 8, 2012 Share Posted April 8, 2012 Have a really good look at the front mount cooler piping, it may be a split silicone joiner or a pipe may have rubbed through near the battery tray etc. Where are u located? Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6308078 Share on other sites More sharing options...
Dobz Posted April 9, 2012 Share Posted April 9, 2012 The BOV piston could be a bit gunked up and sticking open a little. You could try just tightening the BOV right up and gioing for a quick drive. Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6308228 Share on other sites More sharing options...
Kaz200 Posted April 9, 2012 Author Share Posted April 9, 2012 hmm ok the only hoses i havent checked is the FMIC joiners at the bottom.. will check today I'm in westside melb.. hmm ok well im going to Autobarn to get fuel filter soon... Gawd at this point it has not been narrowed down, I'm only getting more suggestions lol.. thats helpful but not, at the same time lol Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6308317 Share on other sites More sharing options...
Bsa Posted April 9, 2012 Share Posted April 9, 2012 I would try fuel filter first also check pump flow a mechanic shop should be able to do this one other thing could be the cat could be blocked. Might be worth putting it on the dyno and removing the exhaust and checking the rest Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6308778 Share on other sites More sharing options...
mad082 Posted April 9, 2012 Share Posted April 9, 2012 try a new fuel filter. is there any kind of EGR (exhaust gas return) on the car? it may be that it needs to be cleaned out. i know that is a common issue with the natro sr20's. also try unplugging the o2 sensor and seeing what that does. finally, is the car auto or manual? Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6308874 Share on other sites More sharing options...
Kaz200 Posted April 9, 2012 Author Share Posted April 9, 2012 changed fuel filter today.. noticeable improvement in driving tonight but not sure if it's fixed it.. will test more tomorrow when going to work.. I suspect not tho it seemed to start faltering a little bit.. EGR.. nfi. hmm cat blocked.. thats a possibility.. fuuuu so many things to check need to borrow consult and see what it says.. tho from prev experience (180/r32) it usually has no faults lol, so may prove worthless.. Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6309186 Share on other sites More sharing options...
Kaz200 Posted April 9, 2012 Author Share Posted April 9, 2012 oh tis manual btw Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6309187 Share on other sites More sharing options...
Bsa Posted April 9, 2012 Share Posted April 9, 2012 It seems like fuel issues if the filter improved it I would also check the fuel pump sock could be full of stuff Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6309343 Share on other sites More sharing options...
Kaz200 Posted April 11, 2012 Author Share Posted April 11, 2012 fuel pump sock.. hmm think the sock monster might have it.. umm. wtf is the sock lol Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6310973 Share on other sites More sharing options...
Bsa Posted April 11, 2012 Share Posted April 11, 2012 It's a filter on the bottom of the fuel pump basically a intank fuel filter they get covered in shit fuel tanks are not very clean places Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6311259 Share on other sites More sharing options...
DVS JEZ Posted April 13, 2012 Share Posted April 13, 2012 Did u chec those silicone joiners? Make sure they are tight and have a good feel that they dont have any splits or holes. Make sure the piping hasnt rubbed through where it goes through the battery tray Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6314117 Share on other sites More sharing options...
KnightRiderR33 Posted April 14, 2012 Share Posted April 14, 2012 did you clean the POD filter recently? i used a k&N recharge kit on mine once and applied to much oil which in turn stufed my MAF sensor give it a good clean with crc MAF cleaner and see how it goes i took it to 5 different mechanics wasted money on CAS coils Ignitor fuel pump then to find it was the MAF Link to comment https://www.sau.com.au/forums/topic/397264-car-choking-while-cruising/#findComment-6314330 Share on other sites More sharing options...
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