Installed LT's, SES Codes like herpes
 

So I installed my LT's last week and they sound good and all except, Im throwing some odd codes. These are race headers so no AIR or EGR which Im not worried about those codes. I'm worried about the fact Im throwing a code for low frequency for the MAF (P0102) and low heat efficency or something like that for the front o2's. Whats the Deal here? the O2's are still good, I just put them in not long ago. When I accelerate from a dead stop or a roll (1st & 2nd gear) the car stumbles and pop's like crazy. Whats the deal here?

did you replace the o2's with new ones? Or did you use extensions. Sometimes the o2 extensions can be hit or miss. I used two new bosch 13111 o2s when i did mine and i havent had any problems

Not sure about the MAF code. Try cleaning it?

Vac leak from the air or egr systems...I'm speaking from experience! If not you may have a bad o2 extension. Did you block off all the wgr stuff? Even at the throttle body?

blown sensor fuse

Headers cools the exhaust more than stockers do. The O2 sensors are probably running cold. The Bosch 13111's mentioned by MTB have higher wattage heaters in them and waaay longer cables eliminating extensions. Many here use them. Find them on Amazon or eekbay starting under 50 bucks each.

Paul, I spoke with Bosch tech assistance and they said that the heaters are the same.

Thank you for justifying the $40 I spent a week ago on o2 extensions. lol

Most standard O2 sensors are about 12 watts. The 13111 is a higher wattage, about 16 watts. This is why when people swap to them, their problems go away.

If it wasn't a higher wattage, problems would remain.

Shevrolay, I know you've done your homework on O2 sensors and participated in many threads here about them, certainly more than I have and I consider your opinions and conclusions valid.

Perhaps the Bosch tech just wanted to blow you off.

I Didn't replace the O2's since I just did about 6months ago, the LT's came with extensions so thats what Im using. I'll replace them with the higher wattage ones when I swap engines. And I cleaned the MAF and still no luck.

Ended up being a blown Engine Sensor fuse, seems to run okay now, still pops but doesn't stumble on its face when you floor it. What would cause it to blow the fuse suddenly?

If I missed it sorry but did you plug all the holes for the egr?I will say my car did that after my longtubes,racestyle, my buddy threw his computer on it with hp tuners and the car ran great after that

you've melted wire on the exhaust

^^^^ or a melted plug wire. He is correct.

This is the truth. I've had an O2 code that has bugged me for two years. Tried two different sets of stock O2 sensors, same deal. Two weeks ago I ditched the stockers and extensions for 13111's, code went away and hasn't come back. Not to mention they look much cleaner and were the perfect length.

Same here, then, a few weeks later the codes were back. I actually had better luck with the AC Delco sensors. They switched faster than Bosch (As viewed on EFI Live).

You just broke my heart :bang:

Well, some people have had good luck with Bosch

I hate going on internet myths and like proof when I can get it. I put in a call to the folks at Bosch. A guy got back to me about an hour later. He said they don't have specific O2 sensor specifications available for them to see, but he did confirm that many are 10-12 watts while higher performance and/or newer cars are 16-18 watts.

I guess this is as good as we're gonna get as far as an exact answer to "what is the wattage difference" question.

What prompted my call is the that despite searching all the "Bosch O2/ higher wattage" threads here, on a few other forums and internet searches, nowhere is the exact wattages actually listed or documented.

I did my lts and have codes for both front o2 sensors with the 13111s brand new out of box no melted wires or anythjng

I did plug all the holes for the EGR, 1 3/8" rubber plug in the intake. I'll put it on the lift tommorow and check out the o2 wires and plug wires. I have truck p/w on it now so maybe the extra length got melted.