Closed loop problem help

Tsuchinoko · Post by **Tsuchinoko** » Sun Oct 11, 2009 12:16 pm

I have now my new wb sensor my other one died and i restarted to tune my maps.
A strange thing happend, i was tuning my car during this weekend and tonight i went to put to closed loop operation, the car was idling ok arround 14,5 afr and when i put to closed loop operation the engine went very lean to 17.xx 18.xx. Why this?

I changed the values to simulate narrow signal in my innovate.

I did this many times before and nothing of this hapens any clue?

Post by **Spunkster** » Mon Oct 12, 2009 10:02 am

http://www.hondata.com/forum/viewtopic.php?t=3772

Tsuchinoko · Post by **Tsuchinoko** » Thu Oct 15, 2009 11:36 am

Car: DC2 itr
Engine: B18C6
Mods: Complete exhaust system, spoon fly and clutch kit.
ECU: EDM P30 with S300

Post by **Spunkster** » Thu Oct 15, 2009 12:06 pm

Don't change it to a narrow band like signal. You should have a 0-5v output that is roughly 10-20 AF ratio.

Tsuchinoko · Post by **Tsuchinoko** » Thu Oct 15, 2009 1:31 pm

Sorry spunkster i did not understand can you explain better.

Post by **Spunkster** » Thu Oct 15, 2009 1:50 pm

Tsuchinoko wrote:I changed the values to simulate narrow signal in my innovate.

Don't do that. It needs to see a standar wideband voltage output.

Tsuchinoko · Post by **Tsuchinoko** » Thu Oct 15, 2009 2:08 pm

Ok thanks.

fly_n · Post by **fly_n** » Thu Oct 15, 2009 8:50 pm

i think he is just simulating narrowband for closed loop spunkster.
seems he is setup with just one input for O2 on the stock D14.

maybe try setting up the WB input on a seperate input like D10 or D12 & leaving the narrowband setup permanently on the D14.
LC-1 can run both outputs simultaneously.

might help stabilise your closed loop & eliminate any possible user error.

Tsuchinoko · Post by **Tsuchinoko** » Fri Oct 16, 2009 1:58 am

I don't have D10 or D12 in my loom that's why i had to connect to D14.

fly_n · Post by **fly_n** » Fri Oct 16, 2009 4:01 am

just go depin a wire from a wrecks ecu plugs & slot it into your D10 ELD or D12 EGR hole than join your WB signal onto that.
maybe if your not using A/C,knock,power steer,whatever inputs,u could take the pin from that connection & relocate it to D10 or 12.

u would have to open up your ecu & see whether your D12 circuitry is enabled,i dont know much about edm ecus,but the D10 should be enabled but not the best input to use in my opinion.D12 would be preferable,but it seems plenty people having success with D10,although its not advisable to remove WB signal from D10 once u have found a decent tune.

Hondata

Closed loop problem help

Closed loop problem help

Re: Closed loop problem help