Ok, the other day i was driving around a large freight terminal looking for an address...30-40 minutes, very slow. My '90 Integra with 96 jdm b18c with Hondata obd1 US version ECU. I got the engine light and flipped the code switch to see 1 long flash and one short flash. 11? There's no such thing, is there? I've done some searching here and other forums and seen a number of different ideas of what this is. The one answer I saw that at least makes some sense, is that it's generated from the oxygen sensor, but not because it's bad, just that the cat overheated.

I don't know. Anybody know what code 11 is? It's not listed as a code. The ECU is fine, and the engine light didn't stay on, or come back on, during my return trip, and has not come back after clearing the code.

Thanks,
Any ideas are appreciated.

 

Code 11 is a Hondata only code... overheating. This "hot" value can be changed in your tune and the conditions in which the MIL light is illuminated can also be modified. The default value is 212'F. If you consider this value to be truly "hot", I suggest you start investigating WHY your engine is reaching this temperature in the first place.

 

Thanks for the info. I wouldn't know what specific temperature is hot and what isn't, but driving around at 5 to 10 miles an hour for 30-40 minutes seems like it could make it run hot, couldn't it?

I'll check the water level. It's only done once in a year and a half.

My "tune" is only the standard 1797cc VTEC GSR supplied on the hondata website. The only change I made was to delete the ELD, lower the cycles on the IACV a little....and I think, deleted the ABS. My car didn't have abs. I kept the dual intake runners.

 

hook up your laptop and find out what temp it reaches.

any yes. driving around at low speeds of 5mph for a long duration will run hotter than coasting
are your fans functioning properly? thermostat? coolant bled?
if your cooling system is operating how it should, your vehicle should not reach 212 degrees

 

Thank you. I appreciate suggestions. My head is into removing the trans out of my Ranger at the moment....so I'm quite distracted. At least for me, it's hard to consider both at the same time.

I must consider my fans. I had to disconnect the fan timer (when I did the swap two winters ago). The '96 B18C doesn't have the third temp senor for that......but I installed new connectors on the fans, that I didn't think were really good connectors. 2x 12 in. Mishimoto which is ridiculous over-kill for this car. They usually only turn on when I pull up and stop to open my garage. Not usually any other time. For the most part this car runs pretty cool.

 

Aren't radiators under pressure so they'll go a bit over 212 without boiling?

 

Yes they are... and yes they can. It is not uncommon for your car to actually reach the temperature of 212'F and the needle on your temp gauge hasn't moved hardly at all above the normal operating temperature point. Your car shouldn't reach 212'F under normal conditions, so you are seeing an early warning sign of an underlying issue, but this temperature in and of itself is not really dangerous... but if it gets any worse, it will be.

 

It did it one time shortly after I did the swap 1.5 years ago, once again the other day. New (Honda) water pump and thermostat during the swap, but I had a hard time getting any bubble out. 57 minutes till the thermostat opens on a 90 degree day. ...wasn't much water in the resovoir (yesterday).. I'll pull it out and open the radiator.

I'm a little slow... working on another vehicle at the moment. Drove to the grocery store Friday. 30 mile round trip, no issue.

 

I plugged in my laptop, which is a real pain. Old heavy and requires a fan pointed underneath.

I could not find a temp setting, but noticed a place where data logging can be enabled. It's not. Will that store info in the ECU?

While running the engine...you have to be recording to see any real-time numbers?

Anyway, after seeing a time of 174F during sustained idle, I was looking for the temp setting among other things. The fans came on sooner then I expected. In my haste to see which fans were on, having to unlock my hood latches to see, I did not notice the temp. The good news is that both fans were on. I was in a hurry because these 12" Mishimoto fans never run for very long and I wanted to make sure an note if they were both on. They were.

I could not find the temp settings. I used this program once a year and a half ago. Got it set up....and haven't plugged it in again. I guess I'll eventually have to buy a small laptop that's not difficult to take out there and plug in. I don't want to set up blue-tooth on my phone.