Did you have this problem after LT install??
Tech Resident
Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
You sure about that Anthony? When i got my LTs in and del. the rear 02s, i was throwing an SES light with my OEM front O2s.. This was back in 2007. So talked to my tuner, he told me to take one of my rear O2s and swap it out. Low and behold it fixed my problems. My LTFT were back on track and i ahve not seen an SES light til that day
Granted, my car didn't run that well after LT's. I gained 35rwhp/40rwtq by tuning them because they threw off my tune so badly. However, I had no O2 or MAF problems, so I'm still going to go with the O2's hooked up incorrectly.
Tech Resident
Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
Don't get Bosch. They're junk and have a higher problem rate than AC Delco or Denso's. I kept my stock O2's and just got extensions to avoid the frequent problems tuners have due to the frequently slow Bosch 13111 sensor.
Ok, well I'm going to go check this out as soon as it stops raining. Also, what about the reverse and skip-shift code??? Ever since those codes its hard as hell to get into reverse.
Ok, well I have O2 extension's so it looks like I won't need the Bosche 13111. I'm going to check out my car tomorrow (if it doesn't rain). I'll keep everyone posted.
Ok, I found out the problem. I jacked my car up and it turns out that my O2 extensions were all burnt from my headers. I plugged in a new O2 extension and all those codes are now gone, BUT I'm still throwing codes (3).
P0102- Mass or Volume Air Flow Circuit Low Input.
P0801- Reverse Inhibit Control Circuit Malfuntion.
P0803- 1-4 Upshift (Skip Shift) Solenoid Control Ciruit Malfunction.
I cleaned my MAF and I even switched with my friends MAF and its still throwing the code. The connectors seem fine and not corroded.
P0102- Mass or Volume Air Flow Circuit Low Input.
P0801- Reverse Inhibit Control Circuit Malfuntion.
P0803- 1-4 Upshift (Skip Shift) Solenoid Control Ciruit Malfunction.
I cleaned my MAF and I even switched with my friends MAF and its still throwing the code. The connectors seem fine and not corroded.
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Ok, I wanted to bump this thread since the other day I actually found out the other O2 problem. I was still having problems with the driver side O2 so me and my boy checked my car out and.... my dumb *** was plugging the driver side O2 to the rear harness instead of the front where it should've been in the first place. We went for a test drive and both O2's seemed to work well. They were bouncing from 400-900ish. I have a question that someone asked me on another forum and I was wondering if you guys knew the answer
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
Ok, I wanted to bump this thread since the other day I actually found out the other O2 problem. I was still having problems with the driver side O2 so me and my boy checked my car out and.... my dumb *** was plugging the driver side O2 to the rear harness instead of the front where it should've been in the first place. We went for a test drive and both O2's seemed to work well. They were bouncing from 400-900ish. I have a question that someone asked me on another forum and I was wondering if you guys knew the answer
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
Teching In
Joined: Feb 2010
Posts: 32
Likes: 0
Ok, I wanted to bump this thread since the other day I actually found out the other O2 problem. I was still having problems with the driver side O2 so me and my boy checked my car out and.... my dumb *** was plugging the driver side O2 to the rear harness instead of the front where it should've been in the first place. We went for a test drive and both O2's seemed to work well. They were bouncing from 400-900ish. I have a question that someone asked me on another forum and I was wondering if you guys knew the answer
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
Im almost positive you are right. At WOT I belive Ls1's stop using more then just the o2's. Like said above talk to a tuner they would know better but these cars do go into a open loop at WOT
I'm thinking the same thing. Guy I knew Said his car ran kinda choppy at wide open throttle. He thought it was the 02 sensors but I didn't think so because when you go WOT the ECU has a preset determination. It doesn't take readings off the 02's and try to adjust at WOT. This is what I was always told.
i'm almost positive i know what' up with your car. there's a fuse that when it blows it'll set the maf, reverse lockout, O2's, etc codes. i forgot which fuse it was but the same thing happed to my car and i replaced the fuse and it fixed it.
I fixed the reverse lockout problem long time ago. It was a fuse...
Teching In
Joined: Sep 2009
Posts: 12
Likes: 0
From: Pearland, TX
"Do LS1s not have the same system as everyone else where the ECU goes into Open Loop when at WOT, meaning the O2 sensors feedback is no longer used by the ECU?
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
So regardless of whether your O2 sensors are functioning properly, your WOT performance would not be affected"
You do go open loop when you are WOT, which means no O2 sensor feedback. Open loop (power enrich) uses a combination of speed density (manifold pressure/temperature) and MAF, I believe based on RPM - If I am correct at high RPM it runs off pure MAF, however since you have an MAF failed code it might remain in speed density. In either case, however, with a failed MAF you are probably getting worse than normal WOT performance assuming you are untuned.
You need to figure out the MAF issue - since you tried another MAF with the same results it could be a wiring or PCM issue (I assume you cleared the code when you changed it out since the code will stay there for several cycles even if the problem goes away). One thing you could do is just unplug the MAF all together, which will force the car to run in speed density. If it runs better you know the MAF is hurting you. If you can get access to a good scan tool you can drive around and see how your mass flow rate changes with respect to TPS and speed density estimated mass flow and see if that helps you diagnose the MAF issue.... you will also be able to check that your O2's are switching properly in closed loop (will bounce between 100-900 mv) and open loop (should peg "high" for a rich condition). good luck!
As far as the skip shift/ reverse issues I would check for shorts or lose wires... not really sure what is going on but sounds like your reverse solenoid is failed to lockout and the skip shift is failed to allow 1-2 shifts all the time (which is what you want, but without the code which is the purpose of the resistor).