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Revs surging/hunting while cruising
  #1  
Old 26-07-2016, 04:21 PM
nedm1989 nedm1989 is offline
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Default Revs surging/hunting while cruising

Hey guys, I've upgraded from my old turboed QD32 D22 and now have a 550 and am loving it, although one of the only concerns I've had is when driving on a flat road at any speed under about maybe 90 but might have to confirm that the revs always seem to surge up around 250/300 rpm and then come back down to where they should be.

This pretty much happens all the time and wanted to know if anyone else has experienced this as other threads don't seem to describe it the same, it doesn't feel like it's changing gear but more so that the gearbox is letting itself slip.

Just wanted to know your thoughts?

And by the way to anyone that needs a what appears to be a full nissan workshop owners manual that covers all spain D40's including all info required on the v9x, PM me and I'll see what i can do ;)
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Old 27-07-2016, 05:18 AM
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Old.Tony Old.Tony is offline
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Haven't heard of many issues with the V9X's SCV, but hunting is a common SCV symptom with the YD25 engine.

First thing I'd do (because it works so bloody well on my YD25) is throw a can of Liqui Moly Fuel System Treatment in the tank. Has worked for me every time.

I must also observe that changing fuel also affects this. When the Shell at Hexham (on my way home) had its diesel 20 cents per litre cheaper than the rest of town, I was buying fuel there as often as needed. After 4-5 tanks my car began hunting at idle, and happened to be away and had to resort to BP Ultimate Diesel (I'm actually a fan of that fuel, don't read that the wrong way). The hunting went away very quickly.

So I'm purely on BP Ultimate now ... car purrs like a kitten.
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  #3  
Old 27-07-2016, 05:35 AM
nedm1989 nedm1989 is offline
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Thanks Tony, sorry I should have not used the word hunting, its only when driving rather than idleing. I always use BP Ultimate diesel in my 550 :)
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Old 27-07-2016, 10:34 AM
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From about 90km/h onwards our cars lock their torque converters, fully engaging the drive line. Could that be a factor?
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  #5  
Old 12-11-2016, 12:14 AM
Kakol junior Kakol junior is offline
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Cool Surge

Hi nedm did you work out the problem?
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Old 24-06-2017, 08:10 PM
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Problem solved?

Sent from my SM-G935F using Tapatalk
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Old 08-07-2017, 11:56 AM
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I've had this happen to mine this week the torque converter isn't locking up which in mine was caused by water in transmission after completing rebuild problems persisted and was solved by replacing torque converter clutch solenoid.
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Old 13-07-2017, 03:10 PM
Kakol junior Kakol junior is offline
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Hi mate was yours doing this ? https://youtu.be/wq-icH8J9nk if so did you change out that solenoid yourself..part number be great..cheers
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Originally Posted by zebra View Post
I've had this happen to mine this week the torque converter isn't locking up which in mine was caused by water in transmission after completing rebuild problems persisted and was solved by replacing torque converter clutch solenoid.
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  #9  
Old 16-07-2017, 10:17 PM
skullbone skullbone is offline
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http://www.sonnax.com/parts/2290-tcc...oost-valve-kit

i dont think this is the right control vavle nor solenoid. but i found this info
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Last edited by skullbone; 16-07-2017 at 10:22 PM.
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  #10  
Old 17-07-2017, 01:59 PM
nedm1989 nedm1989 is offline
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I had a look through the entire manual trying to find where the T/C clutch solenoid is located and didn't see it in the entire rebuild process, is it within the control module/valve body?

Also I think I think our gearboxes are slipping on purpose and I'll take some snap shots from the official nissan manual I have for our model ute tomorrow for you guys.
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