3200 Throttle Response

[Contigo]

You've lost me Davy, all the mods to yellow and white were meant to be done at the pedal wiring end not at the loom end.

 

[Almichie]

You've lost me Davy, all the mods to yellow and white were meant to be done at the pedal wiring end not at the loom end.

Davy is referring to the connector block metal contacts on the loom attached to the car, not the pedal pot

 

[davy83]

Ah right, sorry never having done this (I generally choose the hardest way to fix anything )I thought maybe the loom on the car might be tweaked. The wire colours should be a clue doooh. Yes my sensor replaces everything including cable and connector so no problem

 

[Contigo]

Davy is referring to the connector block metal contacts on the loom attached to the car, not the pedal pot

Yes he was I know but he was also referring to Nicks pedal sensor which has had the wire splice done. Nick when he receives his sensor from Davy will not have to reverse any cabling because the new sensor comes with it's own wiring as you well know. Wasn't being pedantic just wanted to make Nick aware it's not going to be difficult.

 

[PeteNZ]

Hi Guys
Been following this thread as I have a 3200 here in NZ and I've been experiencing an elevated throttle idle at times where it sits around 1500 rpm or more but then comes down to normal and seems OK. At times, when I first got the car, it took off and caused the engine limp mode to kick in. I have tried resetting the throttle but its still not right although it really only seems to be an issue with low speed driving. The TB has not been made contactless but then it's only done 7000 miles (11,000 km) since it was replaced by a previous owner. I'm going to check the temperature sensor to make sure there is nothing wrong there but apart from this it goes really well and throttle response is as you would expect. I suspect it is the pedal sensor and will check the voltage outputs as suggested but if I decide to upgrade to contactless I take it might be best to send it to Davy? In which case, what do you have to remove? Just the black potentiometer or is a bit more complicated? Sorry about all the questions.
Regards Peter

 

[Contigo]

You don't need to send anything to Davy. If and when Davy builds some more pedal sensors he will send you one (in exchange for some readies) and you will remove the Bosch Pedal Pot from your car. It takes about 20 minutes to remove from the car (mainly because of the position of the allan key screws). Fitting the new sensor is much easier due to the size of it.

Funnily enough mine did exactly what yours described at the weekend. Whilst driving on the motorway I could feel a judder if I backed off as if something was throttling. At the next stop the revs whipped right up to 2k rpm and fluctuated wildly. I drove on and stopped the car for an hour or so at destination. Once starting and driving back it was not a problem although the revs did go up to 1500 rpm on a couple of occasions but there were no Check Engine lights.

I just put it down to something in the DBW system but cannot for sure say what it is. As a rule if the revs go up it's throttle body related, if it fails to rev it is a failed/failing pedal pot in my experience but as said it's a black art.

 

[davy83]

I think the original development took millions because, it was new, and never been done, and I suspect much experimenting and design work was done to get the recipe correct. The throttle body and pedal sensor mods are not a redesign of any description, it is just removing the carbon track rotary sensors with contact-less rotary sensors which are the same other wise. The people who manufacture the contact less rotary sensors probably spent millions developing that technology, but as is the case with the pedal sensor are not prepared to make a complete drop fit for this car because the numbers are too low (i can testify to that). So you can get individual rotary transducers which are the latest technology and just upgrade the drive by wire design to remove the part that wears out. Its still the same drive by wire that was there before it just wont wear out, any improvement in the cars behaviour is gravy. The men in sheds are just willing to make small numbers, because we love the cars!!!

My old 3200GT still works as the factory intended and with only 25K maybe my throttle body and pedal potentiometer still work fine

My point is, as Bosch and Marelli with the help of Volvo spent millions of euros developing the first commercial drive by wire throttle systems

How can a man in a shed with very little resource make a better job,Im not knocking it, I'm just asking!

Dave

 

[Contigo]

My old 3200GT still works as the factory intended and with only 25K maybe my throttle body and pedal potentiometer still work fine

My point is, as Bosch and Marelli with the help of Volvo spent millions of euros developing the first commercial drive by wire throttle systems

How can a man in a shed with very little resource make a better job,Im not knocking it, I'm just asking!

Dave

Yours WILL wear out, it's not a matter of if it's WHEN and mine both went so they have been future proofed. Car drives far better too in general.

 

[PeteNZ]

Thanks Phil, well it does seem from what you're saying and Bill as well that its likely to be more throttle body related although I think if Davy is making more I'd be wise to take up the opportunity of being on his list (take note Davy!). I know don't mind spending money on improvements, what I don't like is going to "experts" who know less than you do and deprive you of many pounds (or dollars in my case) for the priviledge of doing so! That's the benefit of joining these groups as somebody, somewhere at sometime has had the same problem. You'd have to be mad or extremely rich to own one of these otherwise and preferably both!

Regards
Peter

 

[alfatwo]

Thanks for all the info guys...I'll keep my fingers crossed as the old 3200GT has never missed a beat in over 3 years with It's 412bhp bog standard spec..

Dave

 

[Contigo]

With the amount of miles you do, it could be 10 years before yours fails.

 

[Rex B]

Mine was changed at 48k miles what about others.

Rex B

Manual 3200

 

[bossemaserati]

evening everyone!

i just changed the throttle pot (the bosch part under the steering wheel) to one of the units that Davy made.
it works absolutely brilliantly!

it is a super easy change over and the results from my first drive afterwards were brilliant. the engine is a lot smoother when in idle (no more 'throttle hunting').
and the throttle response is super accurate now.

i can only recommend. it is a true upgrade.
thank you again David for having made this! brilliant, excellent work.
bosse

PS milage on the car is 55k....

 

[alfatwo]

With the amount of miles you do, it could be 10 years before yours fails.

Suppose Iv'e got this coming then Phil.....The last run in late November the old banger was smooth as silk and sharp as a tack,there no discernible turbo lag, It just heads into the distance like a banshee..
Bit alarming sometimes for a heavy road car,as it picks up speed so quickly..

Brakes are rubbish though,there far too small!

Dave

 

[Contigo]

The brakes are good bit the problem is that the wrong pads are fitted. OEM pads are ****. Fitting EBC red or yellow stuff to mine made a big difference as did renewing the metal brake pipes and putting Goodrich lines in.

 

[alfatwo]

The brakes are good bit the problem is that the wrong pads are fitted. OEM pads are ****. Fitting EBC red or yellow stuff to mine made a big difference as did renewing the metal brake pipes and putting Goodrich lines in.

I have Ferodo DS 2500's on the front, there ok, but you still can't stand it on its nose..

The disc size is just about doable, the original Brembo 4 pot brake calipers were the largest they had on the shelf at the time,sold to allsorts including Alfa,Porsche,Ferrari,Aston Martin,Lamborgini ect

There just too small for an heavy 1700 kilo is'h 400bhp....

I'm doing a little cheapie R&D with Willwood products, I'll keep you posted!

Dave

 

[rs48635]

Dave
Try the yellowstuff before going too far (of course ensure recent brake fluid and integrity of all solid and flexible lines).
Transformed brake response. I do also have disks from 550 maranello fitted all around.

 

[alfatwo]

Dave
Try the yellowstuff before going too far (of course ensure recent brake fluid and integrity of all solid and flexible lines).
Transformed brake response. I do also have disks from 550 maranello fitted all around.

I'll give them a go Rob when I get my new SM spec brake discs fitted in the spring

Dave

 

[Almichie]

I too have yellowstuff fitted, they are very, very good over the standard pads. Better cold response and they just do not fade. They are quite noisey when stamped on compared to the standard pad but I changed discs, pads and fluid so the whole system changed and this may be normal! I certainly won't be going back...

 

[rs48635]

I too have yellowstuff fitted, they are very, very good over the standard pads. Better cold response and they just do not fade. They are quite noisey when stamped on compared to the standard pad but I changed discs, pads and fluid so the whole system changed and this may be normal! I certainly won't be going back...

FOund this too, but after research I am happy this is "normal" for performance braking. Mine no longer squeal but do make some proper guttural noises when used in anger, durring massive stopping moments. ALmost as impressive as the turbo elastic trebuchet effect. "*Almost*"