Author Topic: Accumulator Health Testing  (Read 1636 times)

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CitroŽnbender

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Accumulator Health Testing
« on: February 12, 2018, 08:19:45 AM »
Trying to sort something by remote control here...

With a healthy accumulator, if the car has not run, but ignition is on and the driverís door just opened, how many gears should one be able to row through (with just a brief pause, forward gears only) before the pump kicks in?

bazzbazz

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Re: Accumulator Health Testing
« Reply #1 on: February 12, 2018, 09:37:30 AM »
2-3 gear changes.

If the pump runs at every change Accumulator is on its way out.
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #2 on: February 12, 2018, 09:51:11 AM »
Ta. SWMBO is complaining she has to manually shift, the car wonít go from 2-3 (etc) as normal in City mode - so Iím presuming itís delaying the upshift due to lack of stored pressure. No fault messages or warning lights. Being three weeks away Iím trying to diagnose so the neighbour can repair under instruction.

bazzbazz

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Re: Accumulator Health Testing
« Reply #3 on: February 12, 2018, 05:26:59 PM »
More than likely it is a loose "Pinch Bolt" (bolt that connects the Selespeed Actuator to the gear box selector shaft)

When it comes loose it starts to cause the gear changes to fumble & stumble. Make sure it is tight, check the clutch rod length and then give it a calibration and hopefully all will be good.
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #4 on: February 12, 2018, 09:55:28 PM »
Struth, I guess better to be prepared than caught off guard. The actuator bloc was dealer-new about 110K (mostly highway) ago, circa 2012.

CitroŽnbender

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Re: Accumulator Health Testing
« Reply #5 on: February 14, 2018, 10:10:50 PM »
OK, accumulator passes the rough test; 1-2-3-4-5 shift without hesitation when just opened up and keyed on, motor off.

I'm almost wondering if it's a dying crank sensor; age is about right. 

bazzbazz

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Re: Accumulator Health Testing
« Reply #6 on: February 15, 2018, 01:14:02 AM »
If it is loose pinch bolt it will only do it when driving.

Usual symptoms is that as the car is driving in City Mode, as it goes to shift from say 2nd to 3rd, it's like it can't find the gear, hunts for it for a moment, buggers around then skips to 4th, or until the driver intervenes and does a manual command of some sort.

Does this sound like the trouble in hand?
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #7 on: February 15, 2018, 05:38:16 PM »
I cut and pasted your description, apparently it was spot on, had also neglected to tell me that when it was not upshifting the "2" was flashing... 

Can the pinch bolt be practically re-used with threadlock or is it a stretch bolt? Also, can it be got at through the nearside wheelarch with the splash shield off?

bazzbazz

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Re: Accumulator Health Testing
« Reply #8 on: February 15, 2018, 06:22:04 PM »
Always use a new Pinch bolt, the are a couple of dollars from any specialist bolt supplier. (Bolt King ect)

Yes, you access it through the wheel arch, to make lining up on it easier drop the gearbox down slightly by undoing the main mount bolt.
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #9 on: February 25, 2018, 02:48:31 PM »
Apparently the pinch bolt was solid as; a trusted mate (Renault repairer) had a good look.  The other relief was no Sele oil in the void, so the O-rings are OK. (Phew!)

So - ignoring oddities like shift fork/detent/damaged syncro problems, I'm back to NFI.  :(

I did find this (not really related), had a good laugh at Fleabay auto-translating listing number 152906764204...

bazzbazz

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Re: Accumulator Health Testing
« Reply #10 on: February 25, 2018, 03:02:59 PM »
I assume you are not at the same location as the vehicle?
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #11 on: February 25, 2018, 03:16:22 PM »
No, 1400km away!

bazzbazz

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Re: Accumulator Health Testing
« Reply #12 on: February 25, 2018, 10:09:14 PM »
Great, so I am doing "The Great Swami" impersonation via a 1400km relay . . . . . you DO make things difficult don't you!  ::)

 ;D ;D ;D
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CitroŽnbender

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Re: Accumulator Health Testing
« Reply #13 on: February 25, 2018, 10:19:55 PM »
Well, if it was easy, you'd surely hope I didn't need any help.  :P

CitroŽnbender

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Re: Accumulator Health Testing
« Reply #14 on: March 22, 2018, 12:05:18 AM »
OK, had a chance to observe some of the Sele mischief first hand. It is only doing even gears.  ???