VX V6 Jerking / skipping problem.

[lout]

Trip computer diagnostic codes
Hold mode and up arrow then turn key to on or start
Release buttons
then
Press Mode = Dash Part Number - e.g. 1731
Press Mode = Mode Switch Voltage - e.g. BV - - - 5.0
Press Mode = Battery Voltage - e.g. V 11.8
Press Mode = Petrol Sender Voltage - e.g. FUEL 02.6
Press Mode = LPG Sender Voltage - e.g. VL 5.0
Press Mode = Remaining Fuel - e.g. 38L
Press Mode = Instantaneous Fuel (Liters per Hour) - e.g. 12.8 L/H
Press Mode = Engine Coolant Temp - e.g. 63 C
Press Mode = Vehicle Speed - e.g. 45 KM/H
Press Mode = Tachometer - e.g. 2380
Press Mode = Park Lamps Switch - e.g. P OFF
Press Mode = Dash Trouble Codes - e.g. t 00 (Press up/down to scroll through any codes, these are not PCM, ABS, etc codes)
Press Mode = Dash Test - All gauges will move, lights will come on and buzzer will sound.
Turn key off will revert to normal dash

Dash trouble codes
Format is t then code number then history then current some have nu which I cant remember but believe was not used
Eg
t00-- is fuel gauge sender open circuit no history and no current faults
t16h- is abs history codes but no current fault

00 Fuel gauge sender unit — open circuit
01 Fuel gauge sender unit — short circuit
02 Fuel gauge sender unit — intermittent
03 Fuel gauge sender unit — open circuit
04 LPG gauge sender unit — open circuit
05 LPG gauge sender unit — short circuit
06 LPG gauge sender unit — intermittent
08 No serial data from ABS
09 No serial data from BCM
10 No serial data from ECC
11 No serial data from PCM
12 No serial data from SDM
13 No instrument poll from BCM
14 No serial communication
15 No Sub-clock
16 ABS or ABS/ETC fault logged
17 BCM fault logged
18 ECC fault logged
19 PCM fault logged
20 SDM fault logged
21 Trip switch short circuit
22 Trip switch button stuck
24 EE checksum error
25 ROM checksum error
26 Internal fault

 

[lout]

what fuel do you use and brand

 

[10_80]

what fuel do you use and brand

BP 91 octane, I live in a small country town with one servo, been buying fuel at the same place for 30 years and never had a problem with fuel, haven't heard of any other locals complaining about cars playing up.

 

[lout]

i think you will need a mechanic to check the fuel trims around that driving condition
could be lean misfire, but need to know the cause

 

[lout]

try disconnecting battery for half hour and unplug O2 sensors
make a mark so you know which sensor plugs into which loom
that will stop the ecu from changing the fuel trims from the factory values

 

[Pollushon]

Are you saying this only happens at operating temp?

 

[10_80]

Are you saying this only happens at operating temp?

Yes.

 

[10_80]

i think you will need a mechanic to check the fuel trims around that driving condition
could be lean misfire, but need to know the cause

The old plugs looked on the lean side, brown to white.

 

[10_80]

have you cleaned the throttle body and intake?

Yes, thoroughly cleaned 30'000 k's ago when replacing intake gaskets.

 

[Lex]

Yes, thoroughly cleaned 30'000 k's ago when replacing intake gaskets.

How long ago (time wise) was replacing the lim gaskets?