Evo X idle hunt/surge
Nov 4, 2011, 07:22 AM
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Evo X idle hunt/surge
2008 Evo X MR,40000km/s,completely stock.
When pulling up to a traffic light/stop sign engine almost stalls then the rpm bounces up to 1200-back down to say 400,back and forth like that for probably 10-15 seconds.I can pop in into N and it still does the same thing.Dealer can't find the problem.
Anyone experience the same and a suggestion?
When pulling up to a traffic light/stop sign engine almost stalls then the rpm bounces up to 1200-back down to say 400,back and forth like that for probably 10-15 seconds.I can pop in into N and it still does the same thing.Dealer can't find the problem.
Anyone experience the same and a suggestion?
Nov 4, 2011, 08:41 AM
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I don't think they checked very much.They told me that there was a service update in the form of a reflash that should take care of it....
I'm starting to think they just pulled the battery terminal off and hoped for the best because I got the surge at the dealership's exit to the main road
I would have went right back only I was picking it up afterhours and it was only the sales dept open.
I'm starting to think they just pulled the battery terminal off and hoped for the best because I got the surge at the dealership's exit to the main road
I would have went right back only I was picking it up afterhours and it was only the sales dept open.
Nov 6, 2011, 08:38 AM
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I don't think they checked very much.They told me that there was a service update in the form of a reflash that should take care of it....
I'm starting to think they just pulled the battery terminal off and hoped for the best because I got the surge at the dealership's exit to the main road
I would have went right back only I was picking it up afterhours and it was only the sales dept open.
I'm starting to think they just pulled the battery terminal off and hoped for the best because I got the surge at the dealership's exit to the main road
I would have went right back only I was picking it up afterhours and it was only the sales dept open.
Nov 28, 2011, 10:07 PM
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weird, I have the same idle fluctuations on my '11 GSR. It actually has stalled on me while sitting at a light. outside temp being around 87F. This morning it did it again and it was about 37F in Houston. both at idle while at a light. all I have is a K&N drop-in.
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Nov 29, 2011, 01:21 PM
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My completely stock 2011 GSR idle hunts all the time too.. Especially when hot outside. All my lines are intact.. I don't know what the problem is.. It's random for the most part.. I just blip the throttle a little to make it calm down.
Nov 29, 2011, 04:47 PM
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Mine does that as well but only when I start it. I only experience this when I drive it hard around the city. I have a full TBE, AEM Intake, IC, ICP, and a tune. I dont know why it does that.
Last edited by flipflop; Nov 29, 2011 at 04:49 PM. Reason: spelling
Nov 30, 2011, 09:22 AM
#11
Check the fuel pressure regulator vacuum hose. There is a huge thread on here and it is a know problem. The hose is easy to miss cause it's so tiny. Just do a search. Read up on it. Then hook it back up then throw a zip tie on it. Happened to me.
Last edited by Get Rad; Nov 30, 2011 at 09:25 AM.
Nov 30, 2011, 05:21 PM
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if you run an open filter and our fans kick on blowing hot air into your intake, it'll cause your idle to stumble or die. a heat shield will fix this
Dec 1, 2011, 04:49 AM
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FIXED!
Thanks guys,it was indeed the fuel pressure regulator vac line.
And I think I'll go back and have my eyes re-checked because I can't believe I missed that when checking the oil.......its right there.
Actually I don't feel too bad because the Mitsubishi dealer couldn't find anything wrong with the car......
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Thanks guys,it was indeed the fuel pressure regulator vac line.
And I think I'll go back and have my eyes re-checked because I can't believe I missed that when checking the oil.......its right there.
Actually I don't feel too bad because the Mitsubishi dealer couldn't find anything wrong with the car......
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