Kylefly Posted July 30, 2013 Share Posted July 30, 2013 Hi all, I've recently became a 350Z owner and joined here today so hope I'm posting this in the right area. For the first week the car was a dream to drive but has recently been cutting out randomly. It still drives completely normal and feels fine but sometimes when I come to a stop and dip the clutch the engine will either stall or bog down, like its struggling. If it doesnt stall it carrys on feeling fine to drive... when it happens there are no warning lights and the CEL has never appeared. I've read similar threads which seem to suggest doing the ecu resets and idle relearn etc... this has actually improved the smoothness of the engine but its still cutting out and bogging down randomly.. Is cleaning the MAF and TB going to help (as other threads may suggest) or is there a deeper issue here? I'd greatly appreciate any advice as this is really stressing me out! Cheers Quote Link to comment Share on other sites More sharing options...
djb55 Posted July 30, 2013 Share Posted July 30, 2013 I had a similar issue with my MX5 2.0 after changing the battery, the recomendation was to leave it idling for at least 45 Mins, I kid you not, I was sceptical but it worked !!!! Good luck Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 Really?? Ill try anything! Bit of background info. I had it from a garage who'd imported it for himself and had only put 500 miles on the clock in 4 years, so in my mind that could be a similar situation? The battery could have been flat/changed before I test drove it? I was a bit sceptical at how little he had used it but it was in immaculate condition and drove perfectly. Cheers for the reply Quote Link to comment Share on other sites More sharing options...
M13KYF Posted July 30, 2013 Share Posted July 30, 2013 Could be a couple of things Battery MAF sensor Cam Shaft sensor Quote Link to comment Share on other sites More sharing options...
Voodoo Vix Posted July 30, 2013 Share Posted July 30, 2013 Mine did that when I first put my cooling plate on, turned out the air filter was filthy so was suffering with heat soak - good excuse to change the induction kit (was a HKS one) and she was fine after I'd got another one Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 Cheers for the replies. Planning on cleaning the MAF sensor tonight and will check air filter at the same time. Might be a stupid question but whats the best thing to clean the air filter if filthy?? Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 30, 2013 Share Posted July 30, 2013 Well if it's a washable one then the special detergent. If its not a washable one then throw it out and get a new one. Also what you going to use on the maf? Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 An electrical contact cleaner Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 30, 2013 Share Posted July 30, 2013 An electrical contact cleaner Good man! If you do have a washable filter it will need reoiled after. Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 Cheers. Thanks for the advice! Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 Had a quick look at my air filter on my lunch and damn! Theres leaves, dirt and dead bugs in there, it really is filthy... I'll clean that before messing with the MAF.... Quote Link to comment Share on other sites More sharing options...
BulletMagnet Posted July 30, 2013 Share Posted July 30, 2013 I remember finding a crisp packet in my mates air box when we cleaned it out for the first time 1 Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 30, 2013 Author Share Posted July 30, 2013 Ok so ive cleaned the air filter and maf and the problems still there ..... any ideas? Quote Link to comment Share on other sites More sharing options...
BulletMagnet Posted July 30, 2013 Share Posted July 30, 2013 Changed battery yet? Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 31, 2013 Author Share Posted July 31, 2013 No, can the battery be at fault if it seems fine? Quote Link to comment Share on other sites More sharing options...
M13KYF Posted July 31, 2013 Share Posted July 31, 2013 cam shaft sensor would be the next thing I would look at Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 31, 2013 Author Share Posted July 31, 2013 How would I do that? Im planning on cleaning the throttle body, anyone got any tips? Is it possible to clean it without entirely taking it off? Ill disconnect the battery first Quote Link to comment Share on other sites More sharing options...
glrnet Posted July 31, 2013 Share Posted July 31, 2013 I found it best to take it off but whatever you do don't touch the butterfly valve, likewise when you clean the MAF don't touch the delicate wires inside. Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 31, 2013 Author Share Posted July 31, 2013 Yer I was very delicate when handling the maf ive got a throttle body cleaner that says to spray it up the air intake but wouldnt that be too corrosive for the maf?? Also if the problem persists, what else could it be? (Ive looked up cam shaft senors and that seems beyond my minimal mechanical skills!) Quote Link to comment Share on other sites More sharing options...
Kylefly Posted July 31, 2013 Author Share Posted July 31, 2013 Problem solved (touch wood!) The throttle body was filthy and after cleaning it (I decided not to take it off) the car spluttered and sounded rough. I did the idle relearn and so far its running smoothly and isnt cutting out. I am one happy man Quote Link to comment Share on other sites More sharing options...
glrnet Posted July 31, 2013 Share Posted July 31, 2013 Well done mate Quote Link to comment Share on other sites More sharing options...
Dblock Posted July 31, 2013 Share Posted July 31, 2013 Problem solved (touch wood!) The throttle body was filthy and after cleaning it (I decided not to take it off) the car spluttered and sounded rough. I did the idle relearn and so far its running smoothly and isnt cutting out. I am one happy man Happy to hear you got it resolved. You can mess around with the butterfily valve just as you did do the idle relearn later. You could fit a catch can on each side to stop this happening, or just clean it every service or 2. Quote Link to comment Share on other sites More sharing options...
M13KYF Posted August 1, 2013 Share Posted August 1, 2013 excellent Quote Link to comment Share on other sites More sharing options...
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