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| Rough Idle http://www.nexterra.org/forums/viewtopic.php?f=40&t=9488 |
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| Author: | BostonX [ Tue Dec 12, 2017 5:46 pm ] |
| Post subject: | Rough Idle |
Can anyone identify whats making my X so rough at idle?http://cloud.tapatalk.com/s/5a305c5f01328/1212171736.mp4 Sent from my VS988 using Tapatalk |
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| Author: | murphy [ Tue Dec 12, 2017 9:51 pm ] |
| Post subject: | Re: Rough Idle |
It’s tough to tell from the clip, is it louder under the X? Compared to over the open hood? Could be dragging the starter. Could be the alternator. The VQ40’s alternator is pretty low and can get debris in it, causing premature failure, especially after a dirty water crossing. Trying to think of everything that makes noise that I can. In the front it could be something as simple as a stick or similar in the way of the fan. Could be the idler pulley, or tensioner. Does it turn on and off? On with defrost and off when you turn the HVAC off? Could be the AC compressor. Really it could be any of the components run by the serpentine belt. Hopefully it isn’t inside the motor or trans. It’s tough to troubleshoot over the internet. Any more info would be helpful. |
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| Author: | murphy [ Tue Dec 12, 2017 9:53 pm ] |
| Post subject: | Re: Rough Idle |
Is it only at idle? Or while it’s in drive? Auto or manual? |
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| Author: | BostonX [ Wed Dec 13, 2017 4:31 pm ] |
| Post subject: | Re: Rough Idle |
Auto. Seems to be in drive and idle. A squeaky bushing i can deal with myself. This one is going to the shop. Too much at risk. Know your limits, right? |
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| Author: | murphy [ Wed Dec 13, 2017 4:57 pm ] |
| Post subject: | Re: Rough Idle |
Definitely! Smart call. There is far less frustration for you. Nothing worse than throwing time and $$$ at a problem, and still have no fix. Let the professionals take care of it. Post up what it is. My guess is the alternator. |
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| Author: | BostonX [ Wed Dec 13, 2017 5:02 pm ] |
| Post subject: | Re: Rough Idle |
Will do. Anxious to have her running smooth again. Sent from my VS988 using Tapatalk |
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| Author: | BostonX [ Thu Dec 14, 2017 6:46 pm ] |
| Post subject: | Re: Rough Idle |
So I did some snooping under the hood with the engine running and it was pretty clear that a lot of the noise was coming from what I think is the power steering oil pump pulley. I'm still going to have the shop handle it but just for future reference, how do you deal with a noisey pulley? (Not squealing or squeaking, more grinding) |
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| Author: | MtDewMike [ Mon Dec 18, 2017 5:40 pm ] |
| Post subject: | Re: Rough Idle |
Did you ever get this figured out? Sounds like the alternator's bearings are causing a lot of noise. Could be from those mud puddles in Freetown. |
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| Author: | BostonX [ Mon Dec 18, 2017 6:06 pm ] |
| Post subject: | Re: Rough Idle |
Going to the shop Wednesday. I think it's the bearings on the power steering pump pulley although it could be multiple pulleys. And yes, most likely from the Freetown mud. Still worth it! |
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| Author: | BostonX [ Thu Dec 21, 2017 1:23 pm ] |
| Post subject: | Re: Rough Idle |
John got it. Noise is from a really f*cked alternator. |
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| Author: | MtDewMike [ Thu Dec 21, 2017 7:44 pm ] |
| Post subject: | Re: Rough Idle |
I thought so. Sent from my SM-G950U using Tapatalk |
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| Author: | BostonX [ Thu Dec 21, 2017 8:46 pm ] |
| Post subject: | Re: Rough Idle |
MtDewMike wrote: I thought so. Correction. Mike got itSent from my SM-G950U using Tapatalk Sent from my VS988 using Tapatalk |
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