Discussion
I've got to the bottom (fingers crossed) of my lumpy running/not starting/tickover at 1300 rpm issues
ing throttle pot!!
now theres a suprise!
We thought it couln't be that, as I had a new one fitted 18 months ago or so (I have done 8000 miles since then) - but as I understand they are:
1) fundamentally shit
2) highly exposed to the elements (my car is an all weather driver)
Just for clarity, and for anyone to point me in the right direction if I've done something wrong - process followed was:
Throttle pot in - won't start
Throttle pot disconnected - Starts on the button - runs nicely, but at a slightly higher tickover
Took the pot off and gave the connector a good clean still no joy so look like its a new one for Xmas!
So - my question to the floor:
Did anyone ever get to the bottom of the Ford part/Cerbie version wiring mod/100% open debate that ran on here for a few weeks?
Happy new year Y'all
Tim - (soon to be parted from BERGS2
)
ing throttle pot!! now theres a suprise!
We thought it couln't be that, as I had a new one fitted 18 months ago or so (I have done 8000 miles since then) - but as I understand they are:
1) fundamentally shit
2) highly exposed to the elements (my car is an all weather driver)
Just for clarity, and for anyone to point me in the right direction if I've done something wrong - process followed was:
Throttle pot in - won't start
Throttle pot disconnected - Starts on the button - runs nicely, but at a slightly higher tickover
Took the pot off and gave the connector a good clean still no joy so look like its a new one for Xmas!
So - my question to the floor:
Did anyone ever get to the bottom of the Ford part/Cerbie version wiring mod/100% open debate that ran on here for a few weeks?
Happy new year Y'all
Tim - (soon to be parted from BERGS2
)OK saga with mine:
Erratic tickover, lumpy and occasional kangarooing.
Bought Cerbera TP, didn't check wiring and fitted it.
Result - much smoother tickover but smelled a bit more of petrol than before and popped and banged like a good 'un.
The only snag was that when the accelerator was pressed gently with the car on tickover, the engine hesitated for a moment before picking up.
I got around to checking the wiring loom today - seems that a previous owner had swapped the two outer wires.
I swapped these back to their original positions and the car ran as sweet as a nut. No popping and banging, granted, but much smoother and I think a bit more responsive.
Now I thought the outer wires were supposed to be swapped for the Cerb TP ? My S doesn't seem to think so
The saga continues.....
Erratic tickover, lumpy and occasional kangarooing.
Bought Cerbera TP, didn't check wiring and fitted it.
Result - much smoother tickover but smelled a bit more of petrol than before and popped and banged like a good 'un.
The only snag was that when the accelerator was pressed gently with the car on tickover, the engine hesitated for a moment before picking up.
I got around to checking the wiring loom today - seems that a previous owner had swapped the two outer wires.
I swapped these back to their original positions and the car ran as sweet as a nut. No popping and banging, granted, but much smoother and I think a bit more responsive.
Now I thought the outer wires were supposed to be swapped for the Cerb TP ? My S doesn't seem to think so
The saga continues.....
Update to my last post - anyone got any comments / suggestions ?
I took the S out for her first decent run since swapping the TP (Cerb) outer wires back to the manufacturer's original positions. I have used bullet connectors for ease of swapping until I know what's going on.
As stated in my last post, she starts on the button, ticks over lovely (at about 900rpm) and is definitely more responsive than with either the original (Ford) TP or with the wires crossed.
Result methinks - alas not. Hit the sliproad onto the motorway today, buried the accelerator into the carpet and the engine lurched and lost ALL power. Eased throttle back and she's running again. Foot to the floor, she cuts out. This was repeatable every time the pedal is at the max position.
Does this sound like the TP is falsely reporting to the ECU which in turn is cutting fuel ? (If fuel were still being delivered with the throttle wide open, would there not have been a few pops and bangs as the unburnt fuel was dumped into the exhaust ?
Could it be that at then max position, the Cerbera TP sends a signal that the ECU cannot understand or is out of its range of normal values and it gets confused ?
Alternatively, am I missing something more obvious like one of the other sensors ?
So, does anyone within the S collective have any ideas or is there anybody in the Southampton area who would be willing to have a TP swapping session and seeing what happens ?
Cheers,
Confused of Hants.
Fit a Cerbera pot, they are less than £20. They are a different part number to the ford one, but look identical externally. I can find the number if you want, in my invoice file. The wiring is pretty easy, there are two options, swopping the outer wires around. Mine will not run on way, but will run the other.
Nic
Nic
sotonS2 said:
Can't help you at the mo i'm afraid Neil, but I'm fitting a Cerb TP tomorrow morning & hoping for the best...
fingers crossed!
Tim
I'll be very interested to hear how you get on, Tim.
Please keep us posted.
Got the E1586 part (cerbera 4.2 pot) biked over yesterday from the TVR centre in Barnet (coz I'm an impaitient sod...)
Fitted it - started on the button.
Took her out for a good spin got fully up to temp and hot started no probs - no problems with cut out at max revs (I've heard that this can be an issue)
All problems are history.....
Unfortunately this means that you guys will be welcoming 'Harry Flashman' - to the S Club very shortly...
And I'm getting a nissan
(for the moment...)
Harry Flashman said:
And I'm getting a nissan
(for the moment...)
I'll help you nitrous it. That may ease the pain.
Its not too bad actually - couldn't quite stretch to a Skyline (wouldn't really have suited the commute any better than the S..) so I've looked at a few of these:
replacement for BERG
I've driven those - great cars actually (drift heros due to smooth turbo response). I considered replacing the MG with a S13a variety (but couldn't deal with the lack of convertible top).
Isn't it nearly the same price as BERG though? More practical, civilised and a far easier commute, undeniably...
Isn't it nearly the same price as BERG though? More practical, civilised and a far easier commute, undeniably...
I am not convinced by the Cerbera TP..... it ran ok but was not as responsive on hard high end acceleration.
I went back to the original one that seems to give a lot more "fizz" to the drive. (I know what I mean anyway......)
IMHO the cerbra tp is not the fix. (And a few others ie KentishS2 and MickS2). MikeS2 told me that Austec refused to tune the car with the cerbra tp.
Now if Austec don't recommend them there must be a problem with it....which is my first paragraph.
I went back to the original one that seems to give a lot more "fizz" to the drive. (I know what I mean anyway......)
IMHO the cerbra tp is not the fix. (And a few others ie KentishS2 and MickS2). MikeS2 told me that Austec refused to tune the car with the cerbra tp.
Now if Austec don't recommend them there must be a problem with it....which is my first paragraph.
shnozz said:
neil - if you want to try out claire's Throttle Pot from the S feel free to pop over, nick it and have a play.
Top man Phil, much appreciated - I think trying out a different original TP would answer a lot of questions. I just seem to be going around in circles on this one.
I'm tied up for a couple of hours this afternoon setting up some DJ gear for tomorrow night. If its OK, I'll give you a call later and we can arrange a convenient time.
Thanks again mate.
nicbowman said:
Fit a Cerbera pot, they are less than £20. They are a different part number to the ford one, but look identical externally. I can find the number if you want, in my invoice file. The wiring is pretty easy, there are two options, swopping the outer wires around. Mine will not run on way, but will run the other.
Nic
Been there, done that. They may look identical externally but I'm not convinced they are the same internally.
With wires swapped she runs too rich. With wires in original positions, she cuts out at high revs.
Identification by elimination is what's required - I'm going to take Shnozz up on his kind offer and try out Claire's TP. I'll post the results.
I think I agree with Hoover33's comment that the Cerbera TP, albeit £30 cheaper than the original part, is not the solution. The engine may 'run' but there are too many other people who have been unhappy with the overall performance since binning the original TP.
shnozz said:
I am actually back at work today Neil (hence I am posting on PH again and answering e-mail!) so not around until later anyway.
Will be around for a bit tonight but then down pub. If its any good with you - I am around all weekend.
Sorry mate, forgot some people have to work between Christams and New Year
Weekend sounds spot on - I'll call. A beer tonight sounded great but we have people over for a meal and the Mrs would have me bits in the blender if I roll in late !
Calling SotonS2... what news? How did they compare for you,I am still in two minds and would like to hear how you are getting on.
Still on Cerbie pot without any trouble but don't think I have quite the same throttle response and smells different to me...though it is proving reliable and has a sensible tickover.
Still on Cerbie pot without any trouble but don't think I have quite the same throttle response and smells different to me...though it is proving reliable and has a sensible tickover.
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