Oxygen Sensor Drama's VN V6

[Raymond Packets]

trying to trouble shot the stalling probs with my VN

Am thinking it maybe a faulty O2 sensor

Anybody had any troubles with the Oxy Sensor ?

what symtoms occured ?

My VN stalls at low revs after a few mins , also when engading P or N ....idles fine for a few mins then the revs fluctuate then stall

Raymond

[centy]

mate IAC idle air control.
at the back and underneath the throttle body.
they control the air flow at idle and tend to play up.
They also fill up with crap.

Sooo throttle body service is what you want to do.

[Bz Kn33z]

Is the engine light coming on at all? have you done a computer check to see if there is any codes? Sounds like it could be Throttle body IAC (Idel Air Control) may be faulty and will need to be cleaned with Throttle body cleaner.

If you are sure that its the O2 sensor take it out give it a clean, mine is new and still plays up with the engine light coming on but i think its because i have installed pacemakers and its alot closer to the cat than before, Plus its supercharged and running the standard tune, good luck with it.

[Raymond Packets]

thanks guys , yeah tested and got code 13 ~ Oxysensor so I dicided to put a new one in , at the same time I removed the throttle body I had cleaned it yesterday but not the IAC so I checked it and cleaned it up with carbcleaner was quite dirty ..

The car is now harder to start takes a bita windin over the fires up floody , .....the revs a now higher at idle "a bit to high" but the engine is running alot better no stalling in P or N like before ....

took it for spin for a few hrs ran good apart from the revs high , the engine light came on once at low revs just cruisin 40kmph in the town ?

any thoughts on what I should do next

ps .. running on LPG
Raymond

[88GreenVN]

thanks guys , yeah tested and got code 13 ~ Oxysensor so I dicided to put a new one in , at the same time I removed the throttle body I had cleaned it yesterday but not the IAC so I checked it and cleaned it up with carbcleaner was quite dirty ..

The car is now harder to start takes a bita windin over the fires up floody , .....the revs a now higher at idle "a bit to high" but the engine is running alot better no stalling in P or N like before ....

took it for spin for a few hrs ran good apart from the revs high , the engine light came on once at low revs just cruisin 40kmph in the town ?

any thoughts on what I should do next

ps .. running on LPG
Raymond

Sounds like your making progress. The high revs could still be the TPS now that you've had a play with it - (cleaning it up).

Could it be that there is an air leak of some sort - I havent had much to do the a TPS and how it does or doesnt work.

[Emackulation]

Your problems lies within the IAC or TPS, give em a good but carefull clean and try not to fiddle too much.

[Raymond Packets]

ok I checked and now im getting a code 45 , as far as I can tell this is the o2 sensor rich fuel ? so my problem still lies within the IAC or TPS most likely , ok Im off to pull the throttle body off an recheck everything


btw , I have a max ellery manual for the VN its the worste manual Ive ever owned its crap , its not up there with gregory's or haynes manuals

[88GreenVN]

ok I checked and now im getting a code 45 , as far as I can tell this is the o2 sensor rich fuel ? so my problem still lies within the IAC or TPS most likely , ok Im off to pull the throttle body off an recheck everything


btw , I have a max ellery manual for the VN its the worste manual Ive ever owned its crap , its not up there with gregory's or haynes manuals

So the new O2 sensor is working properly and giving the correct error codes for you to follow.

Can you test the IAC with a multi meter to see if it's working correctly?

Also have you looked at the hose that connects to the MAP sensor on the firewall - this hose can leak/perish a bit.

[centy]

give it a bottle of injector cleaner to.
incase the injectors are leaking a little and causing a rich mixture.

[Raymond Packets]

ok I pulled the the IAC off again just took a look everything looked ok only thing I did notice was oil of soom sort in the electric plug connection of the TPS so I cleaned it up an went for a spin .

Ok the stalling is just about gone still stalls in P but very rarely running alot smoother , this arvo I drove around for a couple hrs no probs was thinking its all better .

went for a short cruise this eve , the enjine light came on a few times so once I got home I checked an got a code 45 even so its running well a bit hard to start still takes some windin over an still starts a bit floody but not as bad as it was .. stalls in P now an then ..when in P it will idle smoothly for probly a minute to min an a 1/2 then it will flucuate for a few sec's then smooth out again in succession its on these flucuations in the revs that it stalls

centy
give it a bottle of injector cleaner to.
incase the injectors are leaking a little and causing a rich mixture.

I will do that centy do you reccomend a good brand cleaner to use ?

88GreenVN
So the new O2 sensor is working properly and giving the correct error codes for you to follow.

Can you test the IAC with a multi meter to see if it's working correctly?

Also have you looked at the hose that connects to the MAP sensor on the firewall - this hose can leak/perish a bit.

I checked out the MAP hose its in excellent nick no kinks damage whatsoever not leaking , could you explain to me how to go about testing the IAC with a multi tester as my manual makes no reference to it , that would be great

I like to thank you all for the support

thanks to the tips Im recieving here Its gettin close to fix'd so it cant be much an Im sure guys are right its to do with the IAC and or the TPS

Raymond

[88GreenVN]

I checked out the MAP hose its in excellent nick no kinks damage whatsoever not leaking , could you explain to me how to go about testing the IAC with a multi tester as my manual makes no reference to it , that would be great

Raymond

Umm I dont have a multi meter and may have to leave it to some one else to explain it it can be done.

All I did was grab one (IAC valve) from the wreckes to test on my car when it was stalling. Turned out not to be the IAC valve in my case.

[Bz Kn33z]

Have you got a mates T/B to change over and test just swap and see if it fixes your problems, go over all your vaccum lines make sure there is no leaks, is there any other codes that follow after 45?

[Not_An_Abba_Fan]

After doing all that did you reset the ECU and reset the TPS?

Remove the negative battery terminal for 10 seconds, replace, start the car in park, rev to 2000 rpm for 10 seconds, turn off car. ECU and TPS are now reset, take it for a drive and see how it goes, also recheck the error codes.

[Raymond Packets]

the only code was 45 no following codes , last night I was thinking about it an I realized that the car was running great an giving code 12 until I flicked into petrol an took it for a spin ....after running on petrol thats when the engine light came on so I tested an got a code 45 .....So this morning I reset the ECU & TPS then went for spin ran very well no stalling idled well , recheched the codes got a code 12
I think if shes runnin on lpg all the time things should OK , and I think all the probs came down to a faulty O2 sensor as I was getting a code 13 before I replaced the O2 sensor ... and a dirty IAC valve cleaning it and the throttle body made all the difference ....

I want to say thanks to all who offered there advice tips and thoughts , without the help you guys have givin me I wouldnt have got it done as my manual is not much good and I wouldnt have known where to start !

Thankyou ALL shes now running sweet

Raymond