IS F (2008-2014) Discussion topics related to the IS F model

Rough idle (near stall), CEL, loss of power

Old 04-21-14, 03:32 PM
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mikersoft
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Default Rough idle (near stall), CEL, loss of power

A little background.. It's a 2012, purchased CPO almost 3 months ago. 11.3K miles currently. I'd noticed what I thought was a slightly low idle on occasion when stopped (which is apparently not unusual for this car). However, it hasn't given me any problems before today.

Today, just as I left a nearby grocery store to go home, I approached an intersection to turn right. As I slowed to a stop, it began to idle very low & rough (nearly stalling). As soon as I turned and accelerated, the CEL came on and there was a loss of power. I was ~1 mile from home, so I kept going rather than stopping & ending up leaving the car somewhere. Other than the rough acceleration and lack of power, it made it home OK.

When I got home, I shut it off, waited a min, then started it up again.. No more CEL, so I took it around the block and it felt fine. I plan to take it to the dealer in the morning for diagnosis, but I'm concerned about it reoccurring on the way there (dealer is ~20 miles from home).

Anyone had any experience with symptoms like this? BTW, car was plenty warm as I'd just finished my 28 mile commute home when I stopped for gas & store. Thanks.

-Mike
Old 04-21-14, 04:27 PM
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Mines idle at 500 steady when stopped in D. In park i think it will idle close to 1k..
Old 04-21-14, 04:28 PM
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cremaster
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i've had the same, slightly low/rough idle while sitting at the stop light. when the light turned green, the car would accelerate just fine. i've never had it happen more than once in any given leg of a trip. in the last 2 years i've owned the car, it's happened about 5 times total. bc it hasn't been a consistent thing and it's never gotten to the point where i've thrown a code or CEL, never had it checked out. curious to see what the dealer finds.
Old 04-21-14, 06:35 PM
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yishin
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is the car OEM ?
do you have a obd2 scanner ? ready to scan for code

if the chk engine light come on and off after the restart the car and " power loss "
it maybe possible, one of your o2 is doing something fishy so it may mess with A/F reading or voltage to the ecu ?
if it is the oem bring it to the dealer to look into their computer ... connect
make sure your dealer dont do any things like " let us duplicate the issue and see what happen ? "
Old 04-21-14, 07:28 PM
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Originally Posted by yishin
is the car OEM ?
do you have a obd2 scanner ?
Yes, completely stock (AFAIK), and no I don't have an obd2 scanner.
Old 04-22-14, 09:46 AM
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yishin
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Originally Posted by mikersoft
Yes, completely stock (AFAIK), and no I don't have an obd2 scanner.
Well u should buy one from amazon they got a wifi obd2 that work with ur cell phone or just to scan from autozone for free
Old 04-22-14, 10:24 AM
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tgui
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Originally Posted by mikersoft
Yes, completely stock (AFAIK), and no I don't have an obd2 scanner.
Im in NOVA and have the same issue except without the CEL. Mine happens if I get on the throttle a bit before making it to a light. If cruising before hitting a light I get no such symptoms. I'm not concerned.
Old 04-22-14, 05:14 PM
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Dealer reported no codes or any issues with the vehicle. Well, I sure hope it was an isolated thing

-Mike
Old 04-23-14, 09:23 AM
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tgui
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Originally Posted by mikersoft
Dealer reported no codes or any issues with the vehicle. Well, I sure hope it was an isolated thing

-Mike
Did you go to Lindsay?
Old 04-23-14, 02:47 PM
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Originally Posted by tgui
Did you go to Lindsay?
No, Pohanka since it's on the way to my office (I work near 28/Waxpool). I used to go to Lindsay (I bought the IS 350 there), but it's just too far out of the way for me these days.

-Mike
Old 04-24-14, 07:10 AM
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Originally Posted by mikersoft
No, Pohanka since it's on the way to my office (I work near 28/Waxpool). I used to go to Lindsay (I bought the IS 350 there), but it's just too far out of the way for me these days.

-Mike
Cool. I'll have to try Pohanka since I live near Wegmans @ 50 & 66.
Old 04-24-14, 11:02 AM
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My LS 460 used to idle low when AC was off. I told the dealer and they said all was fine. It was annoying although it rarely happened . If it happens again turn on your AC
Old 04-24-14, 12:08 PM
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^ ^ ^ ^ Yes, low idle when AC off is very normal, I think we all know that. BUT, the OP had a CEL, that is not normal.

Lou
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