Right now i have a s100 with a p28 running in open loop aka no feedback form the o2 sensor.

Now i get a very srange intermitent check engine light. When the engine is cold and just start it up its fine. I can get the light to come on every time by going about 1/2 to 3/4 throttle in 4th gear then letting it slow down in gear...then the ligt come on. I shut it down and turn it back on but no light anymore.

I jump the service wire and check the code it gives me a code 1 which is the primary o2 sensor. I replaced it to no avail. But teh thing is, its running in open loop anyway so i dont get it.......any ideas?

 

supposedly its a problem with the hondata system, where when you are decelerating, the check engine light comes on. Hondata wont acknowledge the problem, and i hear quite a few people have it happen to them, including myself.

 

Yea i heard some peopel have thisa. If i switch back to closed loop will it fix it or anyoen knwo how to?

 

This also happens to me but ONLY when I don't have the laptop hooked up the the blue box. I have no freakin clue why it does it. I swear it never did it before.

 

This is so annoying......

 

I've only had that problem when I'm running it in open loop.

 

my car does this only then the lights are on... my spedo wont work and when i give it a lil throttle in like 4th and let off the light comes on.. but only when my head lights are on... good luck with your problem.

 

same thing happens to me s100 p28

 

DAMN i have s200 i hope my **** dont do that.

 

this is a problem with the lastest software release, its like the ecu forgets its in open loop mood at certain points. I've had it happen twice recently, the prior 6 months before that, nothing. For some reason, once i uped the boost, i started to get it. I'm sure a new software fix will come out. I guess i'm lucky that i just don't get it that much.

 

i have this same problem on my car, i talked to my hondata tuner and he said he gets the same thing on his car, he has talked to hondata and they know about the problem, but I guess they said they are working on other things right now so they know about it and will fix it eventually, just not right now. i guess it shows up on some full race cars that don't even have o2 sensors

 

Yeah I have the same problem on my setup.... S200b on a P75 (LS). It used to come on every once in a while. And like those stated above, once I shut off the engine and re-crank the CEL would go away. Now the damn thing comes on all the time. It is freakin' annoying. My tuner is aware of this problem so I guess all I can do, too is wait for a "fixer" software. Oh yeah....by the way my car has NO O2 sensor. No need to ask me how I managed to pass a SMOG inspection.

 

Nice. Is everyone getting the same code 1 primary o2 senor though?

 

Yeap....I just hope they (Hondata) find a resolution for this annoying problem. I hate CEL's!!

 

have the same problem

 

I have the same problem. Happened 3 times today, which was irritating. Usually doesn't happen that often, may have something to do with our recent cooler weather?

Only occurs during deceleration. I just ALT+Tab over to Hondalogger and just clear the code while I am driving.

 

my code is for egr code 12. I have a type r and don't have a egr.

 

I'm in the same weather region as you and we experience the same cold front that IL goes through. I haven't had any random CEL occurences.

 

Try to disable the o2 heater in the options menu.

 

I was having the same thing happen to mine when I took it apart. I have a p28 and s200. Larry

 

This isnt funny....I spoke with Hondata.......they claim it to be a bad ECU...My ECU has never done this before...I let a customer borrow it until his new one comes in...and now its doing it....I know the ECU is not bad....

What kind of ignition systems do you guys have??? boxs/plugs/wires


Howard

 

msd blaster SS, magnacore wires, bkr7e plugs, stock ignitor, msd cap. It just recently started for my car, only once i turned the boost past 10psi on the 3 bar. I wonder if its not a 3 bar conversion at the moment. As the only people that experience this that I help tune have 3 bar and are running past 11psi.

 

Well its been running fine as far as i could tell. Been running round 12-13lbs daily and put bout 600 miles on it so far....been driving a lot.

Anymore input from the expert hondata tuners here? Mase?....boosted?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboTegB18c &raquo;</TD></TR><TR><TD CLASS="quote">Try to disable the o2 heater in the options menu. </TD></TR></TABLE>

THis doesn't help. I always disable the O2 heater.

It isn't a bad ECu because it does it to both my ECU's that were chipped by hondata.

 

Disabled....and still doing it...

Replaced the ECU with a new one...and still does it....


SHRUG