SeeNoWeevil Posted December 2, 2018 Share Posted December 2, 2018 (edited) Braked hard and then stalled when pulling away. The restart was longer than usual, more spins of the starter and a 'weak' start. This seemed to put the car in limp with no power and a high idle. Curiously no check engine light though. Pulled over when I could, restarted, still in limp. Pulled over again shortly after, left the car off for a few mins and it started up as normal. Idle back to normal and all power back. Any idea what's going on? I did notice a bit of a weak start after stalling this previous week actually. Edited December 2, 2018 by SeeNoWeevil Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 2, 2018 Share Posted December 2, 2018 Battery. Get it changed. 1 1 Quote Link to comment Share on other sites More sharing options...
cs2000 Posted December 3, 2018 Share Posted December 3, 2018 Yeah, will be your battery, a low battery causes all sorts of weird stuff to happen in Z's for some reason. WInter kills batteries so pretty sure Ekona is right 1 Quote Link to comment Share on other sites More sharing options...
SeeNoWeevil Posted December 3, 2018 Author Share Posted December 3, 2018 Thanks guys. Getting it changed. Quote Link to comment Share on other sites More sharing options...
SeeNoWeevil Posted December 28, 2018 Author Share Posted December 28, 2018 Ok, limp mode returned and threw a CEL this time. Nissan are telling me it needs a heated oxygen sensor (I presume this is the one after the cat) AND a maf at a cost of £850. Why would both of these have gone at the same time? Isn't sensor 1 *pre* cat?? It sounds like they're just guessing to me. Any thoughts? Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 28, 2018 Share Posted December 28, 2018 They may well need changing, and a precat O2 is much more important than a postcat one, as that’s exactly what both of those codes are indicating. How is the battery, did you get it changed? Quote Link to comment Share on other sites More sharing options...
SeeNoWeevil Posted December 28, 2018 Author Share Posted December 28, 2018 16 minutes ago, Ekona said: They may well need changing, and a precat O2 is much more important than a postcat one, as that’s exactly what both of those codes are indicating. How is the battery, did you get it changed? Battery was changed. I'm fairly sure it needed doing anyway. Would a bad maf not have a knock on effect on the O2 sensor? Thanks Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 28, 2018 Share Posted December 28, 2018 Good question. In theory I guess it could, but I’d expect it to affect both sensors not just one. I’d prob change the MAF first and see what happens from there, make sure you get a genuine OEM and not a cheaper one, it may appear to work well at first but ultimately it’ll likely end up causing you more grief. Quote Link to comment Share on other sites More sharing options...
SeeNoWeevil Posted December 28, 2018 Author Share Posted December 28, 2018 15 minutes ago, Ekona said: Good question. In theory I guess it could, but I’d expect it to affect both sensors not just one. I’d prob change the MAF first and see what happens from there, make sure you get a genuine OEM and not a cheaper one, it may appear to work well at first but ultimately it’ll likely end up causing you more grief. The maf is considerably the more expensive of the two, right? Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 28, 2018 Share Posted December 28, 2018 Sadly, yes. However in this case it’s also much more likely that’s the issue, as I can’t see how an O2 sensors could cause a MAF code. Quote Link to comment Share on other sites More sharing options...
Umster Posted December 28, 2018 Share Posted December 28, 2018 Can't see the error code but try swapping the MAF from one bank to the other and see if the error codes flip over too? If they do then definitely a faulty sensor, if not then you've got a different but smaller issue. Quote Link to comment Share on other sites More sharing options...
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