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steveo29

c o pot question

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ive played with my co pot over the last few days..i noticed it reads differant ohms when cold i.e engine stood overnight ,than when its warm

 

is this normal..if so do i set cold or hot

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I think the best way to adjust the Co2 Pot is at ambient temperature. So, with the engine cold! I did it to mine like that...

On the outer 2 pins at cold adjust to get 500 ohms! The engine is working great! :)

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the CO_Pot has 2 functions

 

intake temp

fuel trim.

 

the 2 outer pins should be static. standard setting is around 500 IIRC

middle is temp. have anothe try.

 

i may be wrong but a fluctuating CO_pot is indeed fluct

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500ohms is a just a guidence base setting. Every car has a very slightly different setting to run at its maximum potential. 500 ohms +/- 150 ohms is again a general guide. We use the wideband lamba probe to set the cars up now using the results of what we find to richen/lean the pot off.

It is a good idea to test the resitance of the CO pot quite regularly as about 1 in 10 car we see has a failed/failing unit. This is usally indicated by figures 1500ohms plus, not being able to adjust the resitance down to with in the 500ohms region or simply it not responding at all.

New units are in the region of 50 odd pounds from barry stealer.

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