Crazy AFR fluctuations

K-Series Programmable ECU installation questions / support issues
redyute
Posts: 34
Joined: Sun Feb 08, 2015 4:33 pm

Re: Crazy AFR fluctuations

Post by redyute »

Wonder if he got it figured out couldn't send him a pm
spoon.ap1
Posts: 18
Joined: Sat Sep 19, 2015 8:49 pm

Re: Crazy AFR fluctuations

Post by spoon.ap1 »

Hondata wrote:It needs to be grounded to the same place as the ECU, which on the S2000 is on the back of the cylinder under the cowl. Otherwise you get a large ground loop and possible voltage offsets. Almost all widebands are not well designed as they shunt all the heater current down the same ground as the analog output, but adding in a ground loop does not help.
I ended up bringing it in to my mechanic. He said it was a grounding issue aswell. It's not as bad now but when warming the car up in reads 10 on the gauge. Can you provide a picture of the ground you speak of?
redyute
Posts: 34
Joined: Sun Feb 08, 2015 4:33 pm

Re: Crazy AFR fluctuations

Post by redyute »

strange enough mine does the same thing lol
spoon.ap1
Posts: 18
Joined: Sat Sep 19, 2015 8:49 pm

Re: Crazy AFR fluctuations

Post by spoon.ap1 »

redyute wrote:strange enough mine does the same thing lol
Same as my initial problem or the rich idle?
redyute
Posts: 34
Joined: Sun Feb 08, 2015 4:33 pm

Re: Crazy AFR fluctuations

Post by redyute »

[/quote]

Same as my initial problem or the rich idle?[/quote]
Initial issue afr's going crazy
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