Member Since: 09 May 2023
Location: Kingston upon hull
Posts: 20
I think my suspension might need calibrating..
The photo attached is live data from the car in "normal" ride height.
I am going to hazard a guess and say that's all to pot and needs calibrating lol.
Checked steering wheel sensor that was out but done recalibration.
Battery voltage with engine running is 14.56v
All hieght sensors show equal voltage.
Abs speed sensors all show same speed as well.
What do you think?
Click image to enlarge
10th May 2023 11:11 am
Naki Blake
Member Since: 31 Dec 2021
Location: Taranaki
Posts: 236
Hi Martin
Did you successfully calibrate your height sensors?
I did a calibration with IID tool couple of weeks ago, but now am getting HDC fault, special programs turned off.
No faults however on IID tool.
The reason I did a ride height calibration was I was getting DSC faults on corning while driving. I haven't resolved. I will give it another go. I may look to replace height sensors. Does anyone have a view on genuine vs cheaper alternatives e.g. Britpart.
Cheers Blake
22nd May 2023 2:25 am
FattyLR
Member Since: 20 Aug 2013
Location: Scotland
Posts: 23
Blake, please check the tyre pressures are per spec before doing anything else.
I had the same issue you are seeing (DSC faults when cornering).
I lowered my tyre pressures all round, from 40 psi to 33 psi front, 36 psi rear.
I did this based on research/ advice on this forum. I haven’t seen any DSC faults for a year.
23rd May 2023 2:56 pm
Naki Blake
Member Since: 31 Dec 2021
Location: Taranaki
Posts: 236
I'll give that a go.
Thanks Blake
24th May 2023 7:43 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
Re: I think my suspension might need calibrating..
Martinlrd3 wrote:
The photo attached is live data from the car in "normal" ride height.
I am going to hazard a guess and say that's all to pot and needs calibrating lol.
Why? It doesn’t have to be…
I doesn’t work that way…
You have to actually measure every corner on a dead flat surface
Since there is no exact 0 / zero point how the sensors are mounted (there will be deviations) every corner will have a different figure after proper adjustment with proper measurementsBest regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
24th May 2023 9:08 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
Naki Blake wrote:
The reason I did a ride height calibration was I was getting DSC faults on corning while driving.
suspension arm bushes can be a source for such behaviour too.
I replaced my upper and lower arms, and never had those faults again when cornering (under normal conditions )Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
24th May 2023 9:13 am
Naki Blake
Member Since: 31 Dec 2021
Location: Taranaki
Posts: 236
Thanks Motolab
I'm going to have another try to recalibrate my ride height using my GAP IID.
There are no faults stored, but getting dash warning HDC fault, special functions off.
When I did the calibration, the rear wheels were way out, by 10-20mm. I'm going to give it another go, bounce each corner.
When you do the ride height calibration does the engine need to be running to ensure the compressor tank is full?
Motolab, what sort of bushes did you use?. There is a complete set on line of orange coloured polyurethane - Polybush brand. What's your opinion of these. My D3 has done 161,000km, and I think the bushes are all original, so 17 years old. I'll order and get my local mechanic to fit.
Thanks Blake
24th May 2023 10:50 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
I do it with a running engine indeed..
We have a weight platform for trucks in the neighbourhood, so that way i am sure it is dead flat..
Then measure each wheel centre to wheel arch and make that equal… by default in the normal height setting… (some people play with that height but keep in mind, you motor has to perform safe at high speed on tarmac)
The tendency here regarding bushes is here…. Buy and fit new arms…. They come with new bushes and i fit only the OEM / equal to oem bushes , since poly bushes are to stiff IMHO…
It is not a track car….Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
24th May 2023 1:10 pm
Naki Blake
Member Since: 31 Dec 2021
Location: Taranaki
Posts: 236
Kia ora Harold (Motolab) from New Zealand
I've sucessfully recalibrated my height sensors using my IID, with FattyLR's recommended tyre pressures (33psi front, 36psi rear).
Test driven and no error messages or DSC coming on while cornering.
Front wheels calibrated to 466mm, rear wheels to 485mm.
Just one question regards attached screenshot, can someone please explain the 4 corners numbers, e.g. front left 218/-24/194
Obviously 24 is the difference between 218 and 194. Why are the 4 corners all different. Is that the position of the ride height sensors? Also does it indicate that a ride height sensor is wearing out e.g. front left?
Thanks (apologies to Martin for hijacking your thread)
Blake
25th May 2023 6:23 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815
Indeed : the position of the ride height sensorsBest regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
25th May 2023 7:47 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
FattyLR wrote:
Blake, please check the tyre pressures are per spec before doing anything else.
I had the same issue you are seeing (DSC faults when cornering).
I lowered my tyre pressures all round, from 40 psi to 33 psi front, 36 psi rear.
I did this based on research/ advice on this forum. I haven’t seen any DSC faults for a year.
Hiya
Funny u mentioning tyre pressures as when I popped out yesterday I felt it was slightly pulling to the left
On getting home checked tyre pressures, rear were 35 psi, front right , 20, front left 15 PSI , pumped them all up to 35 Psi as I normally have them on that all round
So indeed , always best to check basics first , was also very pleased with the Milwaukee tyre inflator I got a little while ago, saves having to mess around with extension leads or lifting the bonnet
While I was waiting replaced both my windscreen A pillar trims
25th May 2023 9:20 am
FattyLR
Member Since: 20 Aug 2013
Location: Scotland
Posts: 23
Yes, these ‘fixes’ bring huge sighs of relief…..
25th May 2023 9:30 am
Naki Blake
Member Since: 31 Dec 2021
Location: Taranaki
Posts: 236
Hi Gstuart
Can you please post some info/photo of your Milwaukee tyre inflator. I'm looking for a portable one.
Thanks Blake
25th May 2023 9:39 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
FattyLR wrote:
Yes, these ‘fixes’ bring huge sighs of relief…..
Amen to that
Plus when I removed my old A pillar trims all the existing clips broke, but then remembered I had bought some pliers just for that occasion, ah the joys of getting tools for a specific job to make life easier
Few minutes and they were all out without them dropping inside the holes, at the same time checked the bottom hole mod I done a couple of years ago, patch was still well adhered over the bottom holes , happy days
Last edited by gstuart on 25th May 2023 10:07 am. Edited 1 time in total
25th May 2023 9:54 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
Naki Blake wrote:
Hi Gstuart
Can you please post some info/photo of your Milwaukee tyre inflator. I'm looking for a portable one.
Thanks Blake
No probs, got the Bare M12 one, think it took around 3-4 minutes going from 15-35 Psi , but wasn’t in any rush , used it with one of my M12 6AH batteries
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