90_spec

Hi Everyone,
Would anyone be willing to measure the resistance across their Co Pot of a fiesta RS turbo and let me know the readings?


PIN 1 to 2
PIN 1 to 3
PIN 2 to 3


Would be really useful if possible,
Many thanks
Rich

davidfox280585

hi rich,
ive just had a job on where the car had underlying issues, iirc i checked my mates and come back to a measurement of 3.24 dont ask me what setting on the multimeter but you will get it im sure
my issue turned out to be a fuel pressure reg even though it had the anti tamper cap still as factory the car was not running the correct 3 bar fuel pressure

Rich87

If i remember and you still need them I'll do it Wednesday night when I'm in my unit

90_spec

HI David, thanks for that, ive read somewhere that its a 5Kohm pot, so the 3.24 would point towards Kohm, but weather t hat is between single and GND or Signal and V-Ref will tell us the output voltage and therefore the setting,


Rich, that would be really useful if you could,
Thanks
Rich

davidfox280585

i am pretty sur ei could only get one reading regardless when i set this, i had the same issue and went to a friends who had a unmolested fiesta turbo and metered his and set mine exact

90_spec

OK, so I was waiting for one from ebay to come,
The Co Pot is a 5.82K Pot and this reads across PIN 1 and PIN 3
PIN 1 to PIN 2 = 4.4K and PIN 2 to PIN 3 = 1.63K


4.4 + 1.63 = 6.3K so I can only assume there is an offset resistance in the Signal output or wiper leg of the Pot of about 200 to 300 Ohms
PIN 1 = GND
PIN 2 = Signal to ECU
PIN 3 = 5V Supply (V-Ref)


Would anyone else care to share their values?, mine has the cap on but clearly been tampered with.