Got a code p0420 i know what that is and how to fix it but I dont understand how to read the freeze frame data is it good bad or what

fuel sys1............cl
fuel sys2............cl-fault
calc load %........18.43
ect temp...........186 after running on hyw for 20 mins
stft b1 %...........-4.86
ltft b1 %.............3.13
map inhg.............19.79
eng rpm..............1400
speed.................51

I just dont know if these are were they are suppose to be or not

 

Ok, looking at the data...... Cruising on the hwy, engine at operating temp, light foot on the gas, (indicated by engine load, and manifold vacuum) Probably warmer outside than it has been for a while. Not sure about fuel system 1 and 2...... would have to look those up again.

 

what kind of range should the stft% and the ltft% be in ? I assume that is short and long term fuel trim.

 

And you would be correct in that assumption. Small, single digit numbers are good. Basically, that's the deviation from the standard tables the PCM uses in open loop. Yours shows not a lot of deviation from them, so, the open loop numbers are pretty good.

 

thanks for the info sir

 

Happy to be of service.

 

I'm thinking that means your intake gasket is not leaking. So look else where for that buzz.

 

Will do

 

I have a 2001 Durango Sport. 4.7 ltr. I am getting a code p0740 on my reader.
Here is the Trouble Code Report:

Trouble Code Report

Date: 11/20/2013 7:30:46 AM

Code Type Status Description
P0740 PowerTrain Stored Torque Converter Clutch Circuit/Open


Here is the Freeze Frame Report:

Service $02 - Freeze Frame Report

Date: 11/20/2013 7:32:06 AM

A freeze frame was found but the vehicle has no stored trouble codes. This indicates that the freeze frame could contain out-of-date and inaccurate information.

PID Description Value Units
0x02 Freeze frame DTC P0740
0x03 Fuel system status Closed-loop, using oxygen sensor feedback to determine fuel mix
0x04 Calculated load value 15.29 %
0x05 Engine coolant temperature 201.2 F
0x06 Short term fuel % trim - Bank 1 -3.12 %
0x07 Long term fuel % trim - Bank 1 -3.91 %
0x0B Intake manifold absolute pressure 7.98 PSI
0x0C Engine RPM 1664 RPM
0x0D Vehicle speed 47.22 MPH

Can anyone give a clue as to what might be the problem?

 

If you have no stored codes. Then the stored code was cleared after 255 starts. If you are having lock up problems, then I would have torque cover stall test done.