Oxygen Sensor?

[hotweelz]

Hi all, after removing the throttol body on my S1 VN to do a thermostat ive developed a problem, it has a very rough idel on start up for about 15 secconds untill the engine check light comes up (error code 13), so i removed the oxygen sensor and gave it a clean, but the problem is still there, the problem comes and goes while driving aswell, with the throtoll cutting in and out intermittently

Anyone have any recomondations

[hotweelz]

Also, if i unplug the map sensor start up idle is fine but it wont rev above around 2 tho

[Not_An_Abba_Fan]

If this only happened after removing the throttle body you either haven't connected something properly or it needs a reset. Disconnect the battery for 10 seconds, reconnect then start the car and rev to 2000rpm for 10 seconds.

[Pub247]

might be the idle control solenoid on TB needs resetting

[hotweelz]

If this only happened after removing the throttle body you either haven't connected something properly or it needs a reset. Disconnect the battery for 10 seconds, reconnect then start the car and rev to 2000rpm for 10 seconds.

just gave it a go mate and diddnt get anywhere with it, couldnt hold it at 2000 untill the engine light came on but still gave it a go

[wortus]

I'd be checking the IAC for correct operation, however error code 13 is the O2 sensor so check the wiring to that. If the wiring is OK go and get a new one, they are only cheap I bought an AC Delco one from a Holden dealer for $50 but shop around as I found another holden Dealer wanted $100 for the same part.
What did you clean the O2 sensor with as some solvents etc can contaminate and stuff them. Also when you took the throttle body off did you clean it at all? Maybe you dis lodged some gunk and it has got into the IAC or it's ports?

When you say that it comes and goes while driving do you mean the engine runs rough while the car is moving and the throttle off idle or only if stop and idle it?

[hotweelz]

I diddnt give the tb a clean, only wiped put a bit of oil and I used a butane torch to clean the carbon off the sensor, the coming and going of the problem is really only when I accelerate but it seems worse coming out of corners in 1st (5 speed) it is also seems to only be running on 4cyls when the problem occurs, also how would I go about testing the IAC?

Thanks,
Greg

[vpcalais6]

The o2 sensor can not make the car miss

If u have checked all the other suggestions

An still no good

It could be a dieing cas or coil packs

[Not_An_Abba_Fan]

The O2 sensor won't cause your problem, it has to be either the TPS or the IAC, as they are the only things that have been touched when you removed the TB. Are there any vacuum leaks around the TB?

[hotweelz]

Ok then no worries, I haven't noticed any vacume leaks so I'll chuck the new o2 sensor in and put on the spare coil packs when i get home on friday hopefully and see if it fixes the problem, as for the cas I don't think it woluld be that as I only replaced it when I bought the car 3 months ago

Thanks,
Greg

[wortus]

I diddnt give the tb a clean, only wiped put a bit of oil and I used a butane torch to clean the carbon off the sensor, the coming and going of the problem is really only when I accelerate but it seems worse coming out of corners in 1st (5 speed) it is also seems to only be running on 4cyls when the problem occurs, also how would I go about testing the IAC?

Thanks,
Greg

To test the IAC I seem to recall reading that you remove it from the throttle body and turn the ignition on and this shoudl make the valve go up and down a few times.
These were revised in later models to improve the idle.
The throttle position snesor gives the ECU an indication of both the position of the throttle and the rate of change. It is a variable resistor so you just have to check it's resistance and that the resistance changes in a linear relationship with position.

[delcowizzid]

dont power up the iac when out of the TB or it will fly to peices all over the show

[Not_An_Abba_Fan]

dont power up the iac when out of the TB or it will fly to peices all over the show

Yep....I've heard of people doing this....

[FXST01]

Did you clean off the old gasket and use a new gasket when replacing the TB?

Did the IAC and TPS connectors click in properly?

I don't have access to a series 1 manifold, but are there any connectors that may have come disconnected?

[hotweelz]

Did you clean off the old gasket and use a new gasket when replacing the TB?

Did the IAC and TPS connectors click in properly?

I don't have access to a series 1 manifold, but are there any connectors that may have come disconnected?

Yea mate I cleaned off the old gasket but It was after shop hours so I used gasket goo instead, and yes there Is 2 electrical connections and a few vacuum lines aswell and everything seems to be connected fine and it dosent sound like it is sucking air from where I made the gasket

Thanks
Greg

[delcowizzid]

did you say you oiled the TB . TPS sensor may have got oil in it will make it do funny things.and did your gasket goo smell like salt and vinigar chips if so it will kill O2 sensors.

[wortus]

dont power up the iac when out of the TB or it will fly to peices all over the show

This is how it says to test them in the Holden workshop manual. I've done it and it did not fly to pieces.

[hotweelz]

did you say you oiled the TB . TPS sensor may have got oil in it will make it do funny things.and did your gasket goo smell like salt and vinigar chips if so it will kill O2 sensors.

Na mate there was some oil in the in the throttle body when I tool it off the plenum so I just wiped it away, I have a spare motor sitting at home so is changing The coilpacks dosent fix the problem I'll change tb's and see were that gets me

Thanks for all the help guys, I'll keep you posted on how I go

[hotweelz]

Sorry about the spelling guys I'm typing from my iPhone

[hotweelz]

All sorted guys kinda feel stupid, the line between the map and the tb wasn't connected -.- running like a charm now tho haha

Thanks for the help everyone