Innovate LM-1 sucking air?
#1519153
10/17/13 08:26 PM
10/17/13 08:26 PM
|
Joined: Sep 2011
Posts: 1,487
STL
cdstl
OP
pro stock
|
OP
pro stock
Joined: Sep 2011
Posts: 1,487
STL
|
I have a new exhaust and a bung welded to the header collector. Remflex header gaskets and the collector has a paper gasket sealed with copper RTV. I have calibrated the sensor with it hanging in thin air, not screwed into the collector, and it shows 20.9%. Dead on. I have even smeared the outside of the bung with copper RTV.
I cannot get the AFR to show consistently. I seem to be drawing in air from somewhere, I guess. The only thing that I haven't done is their "rule of thumb" and turn the unit on AFTER I start the engine.
At least when I shut it down at normal operating temp it shows 14.3 AFR.
Any ideas?
1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500
|
|
|
Re: Innovate LM-1 sucking air?
[Re: cdstl]
#1519154
10/17/13 09:49 PM
10/17/13 09:49 PM
|
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
I have a used LM1 with a new bung but I ain't got it in yet. Either the header gaskets are leaking air or there's a problem with the LM1 or it's calibration which I ain't telling you anything you dont already know but here's a BTT for ya. I was a bit confused by the instruction booklet that came with it & I have the disc but have not looked at it yet.
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Innovate LM-1 sucking air?
[Re: Diplomat360]
#1519157
10/18/13 12:21 AM
10/18/13 12:21 AM
|
Joined: Sep 2011
Posts: 1,487
STL
cdstl
OP
pro stock
|
OP
pro stock
Joined: Sep 2011
Posts: 1,487
STL
|
Quote:
My LM-1 fluctuates as well, but this is by 0.5 at most...more importantly though...at cruise speed, are you getting a steady reading?
I am differentiating between the two since a larger cam will have a much bigger impact on idle readings.
The problem is that I don't get a steady AFR reading. It keeps switching between AFR and the Lamda readings. So quickly that I can't even get the AFR.
I do seem to have a slight miss at times, that would explain why there is more O2 in the system and the meter switches between the two readings. I am going to clean the sensor, recalibrate it, and see what I get. I just borrowed this machine and hope to get an Edelbrock AirGap over the winter. Probably a new set of plug wires as well. I would have had to do this all over again but I thought what the heck, lets try it now.
One more time tomorrow and then I'm going to return it to its owner. The car runs really well but some fine tuning would help.
Thanks
1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500
|
|
|
Re: Innovate LM-1 sucking air?
[Re: Swedcharger67]
#1519159
10/18/13 08:44 AM
10/18/13 08:44 AM
|
Joined: Sep 2011
Posts: 1,487
STL
cdstl
OP
pro stock
|
OP
pro stock
Joined: Sep 2011
Posts: 1,487
STL
|
The written directions are not great and the CD is not in the box with the machine. It could be the probe, there are a few guys online that changed the probe and it worked correctly. It's not my O2 sensor.
From what I can gather, if you are sucking some air or have a miss too much O2 is being introduced and would skew the readings. I don't think it should switch back and forth though.
Thanks
1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500
|
|
|
|
|
