Maintenance & Repair 350Z up keep and diagnosing/fixing problems

ECU Relearn (warm start stalls)

Old 08-26-2013, 07:56 AM
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Originally Posted by elvee18 View Post
ok sweet well im glad to know that Its not a serious problem and its a self fix haha.. do you know if theres anyway I could do to just fix it by hand or a way to do it quickly?
Hey so did your Z ended up relearning the idle?
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Old 08-26-2013, 12:12 PM
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I'm having the same issue, I got my car about a year ago and I've always noticed that only when starting the engine when it's already warm the rpm will dip very low, like sub 500 rpm and seem like it almost stalls, and then raise right back up as if nothing happened. Like I said, it's been going on for as long as I've had the car, and I've tried to clean the MAF and throttle body, and I've changed just about every fluid in the car, air filters, oil/ filter, spark plugs, and got a new battery, it isn't a serious issue or anything, but it's something odd I've noticed.

Last edited by CptWiggles; 08-26-2013 at 12:17 PM.
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Old 06-02-2015, 05:46 PM
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Default sorry for the revive but my 07 HR is doing the same thing

So I got my 07 HR with close to 75,000 miles, eversince the beginning of this year it started to do this randomly, I had the MAFs , Throthels cleaned, took it to the dealer for a stock flash but no every time its warm is just stalls if I don't give it gas. A near by friend said he "fixed" his by changing one of the relays behind the battery. any advise. oh by the way mines I got the JWT pop chargers, Z1 HFCs, and Borla Exhaust, no UpreV yet. Help is appreciated
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Old 06-03-2015, 02:54 PM
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Do a live data scan of your coolant temperature sensor and your manifold absolute pressure (MAP) sensor. Also check your fuel/air mixture and make sure you're not running too rich or lean. Make sure the sensors are sending data within spec from a cold start until it idles at normal temps. If the data reads are good, then start checking for vacuum leaks.

Last edited by zakmartin; 06-03-2015 at 02:57 PM.
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Old 01-25-2019, 02:33 PM
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Default hmm

Not sure if the car will always fix itself.. I have a 2008 and my car has been doing this for at least a year now. It's fairly rare.. only does it on maybe 1 out of 6 warm starts or so and often it will start to die and I'll rev it up and keep it alive.. I'd love to know how to fix it tho!
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Old 01-25-2019, 02:35 PM
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However, every warm start the idle dips a little further than I feel it should... Of course cold starts this isn't a problem at all..
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