Can anyone tell me if the O2 sensor can be unplugged from the CAT or does it have to be removed entirely, as in unscrewed?
Les
I should have been a bit more explicit.
I have unplugged the O2 leads in the engine bay and removed the muffler/CAT. What has me bluffed is a very large spring clip on the body of the O2 sensor that initially looked like it was covering an unplugging point but there is nothing under it, so what is the clip doing?
Les
From:
Syncro_T3_Australia@yahoogroups.com
[mailto: Syncro_T3_Australia@yahoogroups.com ]
On Behalf Of syncroaustralia
Sent: 03 October 2011 17:40
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] O2
Sensor
Can anyone tell me if the O2 sensor can be unplugged from the CAT or does it have to be removed entirely, as in unscrewed?
Les
Hi Les, That clip/cover is just to stop the radiant heat affecting the wiring end of the sensor. It is just a push fit and the gap should face away fom the pipe. Greg E
From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Monday, 3 October 2011 6:31 PM
Subject: RE: [Syncro_T3_Australia] O2 Sensor
To: Syncro_T3_Australia@yahoogroups.com
Sent: Monday, 3 October 2011 6:31 PM
Subject: RE: [Syncro_T3_Australia] O2 Sensor
I should have been a
bit more explicit.
I have unplugged the
O2 leads in the engine bay and removed the muffler/CAT. What has me bluffed
is a very large spring clip on the body of the O2 sensor that initially looked
like it was covering an unplugging point but there is nothing under it, so what
is the clip doing?
Les
From:
Syncro_T3_Australia@yahoogroups.com
[mailto: Syncro_T3_Australia@yahoogroups.com ]
On Behalf Of syncroaustralia
Sent: 03 October 2011 17:40
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] O2 Sensor
Sent: 03 October 2011 17:40
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] O2 Sensor
Can anyone tell me if the O2 sensor can be unplugged from the CAT or
does it have to be removed entirely, as in unscrewed?
Les
Greg,
Thanks for the information. It is hard to understand why, if they have gone to the trouble of trying the shield the sensor body, they didn’t do a believable job of it. The clip is only half the length of the sensor body and it makes close contact with the body on half of its diameter. Have you seen this on other vehicles? Very odd!
If there is good reason to shield the O2 body, I am tempted to toss this half measure away and make a decent heat shield.
Les
From:
Syncro_T3_Australia@yahoogroups.com
[mailto: Syncro_T3_Australia@yahoogroups.com ]
On Behalf Of greg esposito
Sent: 03 October 2011 18:41
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia]
O2 Sensor
Hi Les, That clip/cover is just to stop the radiant heat affecting the wiring end of the sensor. It is just a push fit and the gap should face away fom the pipe. Greg E
That doesn't make a lot of sense to me 'unplugged from the cat."
the O2 sensor can be unplugged electrically, no problem.
It's a good thing to try anytime the engine acts up.
The default engine parameter mappings is quite good with no O2 sensor
input.
It's fine to run that way..
not quite as smooth, and worse fuel mileage, but no harm otherwise.
Something has to plug the hole where the O2 sensor screws in of
course.
Scott
Southern Oregon, USA.
----- Original Message -----From: syncroaustraliaSent: Sunday, October 02, 2011 11:39 PMSubject: [Syncro_T3_Australia] O2 Sensor
Can anyone tell me if the O2 sensor can be unplugged from the CAT or does it have to be removed entirely, as in unscrewed?
Les
I think it is due to the fact it is on the inside of a bend. A lot front wheel drive cars have similar when they are located next to the manifold. Greg E
From: Les Harris <leslieharris@optusnet.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Monday, 3 October 2011 6:49 PM
Subject: RE: [Syncro_T3_Australia] O2 Sensor
To: Syncro_T3_Australia@yahoogroups.com
Sent: Monday, 3 October 2011 6:49 PM
Subject: RE: [Syncro_T3_Australia] O2 Sensor
Greg,
Thanks for the
information. It is hard to understand why, if they have gone to the
trouble of trying the shield the sensor body, they didn’t do a believable
job of it. The clip is only half the length of the sensor body and
it makes close contact with the body on half of its diameter. Have
you seen this on other vehicles? Very odd!
If there is good
reason to shield the O2 body, I am tempted to toss this half measure away and
make a decent heat shield.
Les
From:
Syncro_T3_Australia@yahoogroups.com
[mailto: Syncro_T3_Australia@yahoogroups.com ]
On Behalf Of greg esposito
Sent: 03 October 2011 18:41
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] O2 Sensor
Sent: 03 October 2011 18:41
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] O2 Sensor
Hi Les, That
clip/cover is just to stop the radiant heat affecting the wiring end of the
sensor. It is just a push fit and the gap should face away fom the pipe. Greg E
Scott,
I put that very badly.
I could see the clip on the sensor body and thought that it was covering an unplugging junction. Once I got the CAT/muffler out into the daylight, I could see that there was no junction at the O2 and I unplugged the lead from the loom in the engine bay.
Greg E tells me that the clip is intended as a heat shield but it certainly looks half-baked – pun intended.
Les
From:
Syncro_T3_Australia@yahoogroups.com
[mailto: Syncro_T3_Australia@yahoogroups.com ]
On Behalf Of Scott Daniel -
Turbovans
Sent: 03 October 2011 19:00
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia]
O2 Sensor
That doesn't make a lot of sense to me 'unplugged from the cat."
the O2 sensor can be unplugged electrically, no problem.
It's a good thing to try anytime the engine acts up.
The default engine parameter mappings is quite good with no O2 sensor input.
It's fine to run that way..
not quite as smooth, and worse fuel mileage, but no harm otherwise.
Something has to plug the hole where the O2 sensor screws in of course.
Scott
Southern Oregon , USA .
----- Original Message -----
From: syncroaustralia
Sent: Sunday, October 02, 2011 11:39 PM
Subject: [Syncro_T3_Australia] O2 Sensor
Can anyone tell me if the O2 sensor can be unplugged from the CAT or does it have to be removed entirely, as in unscrewed?
Les
Can anyone shed any light on an idle issue ?
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
Mark, have you checked for an inlet leak. Or maybe the notorious temp2 sensor. That is not a lot of info to go on and to be frank the only way to diagnose these things right is to work through the manual checking everything one at a time. Only replace parts that fail, with the exception of the temp2 sensor. If that is twenty years old just replace it. Greg E
From: mark <m.mullet@yahoo.com.au>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Saturday, 27 July 2013 7:01 PM
Subject: [Syncro_T3_Australia] O2 Sensor
To: Syncro_T3_Australia@yahoogroups.com
Sent: Saturday, 27 July 2013 7:01 PM
Subject: [Syncro_T3_Australia] O2 Sensor
Can anyone shed any light on an idle issue ?
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
You won't find Vanagon syndrome and its remedies in Bentleys.
Ken
To: Syncro_T3_Australia@yahoogroups.com
From: m.mullet@yahoo.com.au
Date: Sat, 27 Jul 2013 09:01:51 +0000
Subject: [Syncro_T3_Australia] O2 Sensor
To: Syncro_T3_Australia@yahoogroups.com
From: m.mullet@yahoo.com.au
Date: Sat, 27 Jul 2013 09:01:51 +0000
Subject: [Syncro_T3_Australia] O2 Sensor
Can anyone shed any light on an idle issue ?
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
Then it stabilizes a bit but still has a rough idle.
The main driving symptom is jerky driving in 1st or second on idle.
Disconnect the Oxygen sensor and it idles and runs smoothly..
Is it harmful to run it this way ?
Studied the Bentley but ended up more confused !
Mark
Sounds like the trouble I had .
Crap idle - surging between 500-800 rpm and embarrassingly taking off at traffic lights. I initially tried adjusting the throttle position switches and I never changed over the exh sensor when I rebuilt my motor as I had to splice the generic unit in. About 3 months ago I booked my car in for diagnostic testing and I felt guilty taking it there with the old exhaust sensor so late at night I decided to change it out and the results were very good. My erratic idle disappeared especially when hot.
It improved the car to the extent I'm tossing up whether to Persue my engine conversion sitting in my garage.
I still find it some what ancient to drive in town though.
Hamish
Sent from my iPhone
Crap idle - surging between 500-800 rpm and embarrassingly taking off at traffic lights. I initially tried adjusting the throttle position switches and I never changed over the exh sensor when I rebuilt my motor as I had to splice the generic unit in. About 3 months ago I booked my car in for diagnostic testing and I felt guilty taking it there with the old exhaust sensor so late at night I decided to change it out and the results were very good. My erratic idle disappeared especially when hot.
It improved the car to the extent I'm tossing up whether to Persue my engine conversion sitting in my garage.
I still find it some what ancient to drive in town though.
Hamish
Sent from my iPhone
On 27/07/2013, at 7:01 PM, "mark" <m.mullet@yahoo.com.au> wrote:
> Can anyone shed any light on an idle issue ?
> With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
> Then it stabilizes a bit but still has a rough idle.
> The main driving symptom is jerky driving in 1st or second on idle.
>
> Disconnect the Oxygen sensor and it idles and runs smoothly..
> Is it harmful to run it this way ?
>
> Studied the Bentley but ended up more confused !
>
> Mark
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
What's the temp2 sensor Greg ?
FYI I've checked the O2 sensor, works fine. Replaced the idle control unit, no difference.
Checked intake for leaks, found some, made no difference. Replaced blown cat converter, made no difference.
Cheers,
Mark
FYI I've checked the O2 sensor, works fine. Replaced the idle control unit, no difference.
Checked intake for leaks, found some, made no difference. Replaced blown cat converter, made no difference.
Cheers,
Mark
--- In Syncro_T3_Australia@yahoogroups.com, greg esposito <gregespo73@...> wrote:
>
> Mark, have you checked for an inlet leak. Or maybe the notorious temp2 sensor. That is not a lot of info to go on and to be frank the only way to diagnose these things right is to work through the manual checking everything one at a time. Only replace parts that fail, with the exception of the temp2 sensor. If that is twenty years old just replace it. Greg E
>
>
> ________________________________
> From: mark <m.mullet@...>
> To: Syncro_T3_Australia@yahoogroups.com
> Sent: Saturday, 27 July 2013 7:01 PM
> Subject: [Syncro_T3_Australia] O2 Sensor
>
> Â
>
> Can anyone shed any light on an idle issue ?
> With the Oxygen sensor connected the Syncro idles in a 200 rpm band after about 2 minutes of normal idling after start...
> Then it stabilizes a bit but still has a rough idle.
> The main driving symptom is jerky driving in 1st or second on idle.
>
> Disconnect the Oxygen sensor and it idles and runs smoothly..
> Is it harmful to run it this way ?
>
> Studied the Bentley but ended up more confused !
>
> Mark
>
Mark,
It’s in the bottom of the thermostat housing. When that malfunctions, everything goes very rough. Given how cheap they are, it is prudent to change it in any event. I had the same problem about a year ago and it was the T2. I changed that and everything instantly went back to normal.
Les
From:
Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com]
On Behalf Of mark
Sent: 29 July 2013 13:48
To:
Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Re:
O2 Sensor
What's the temp2 sensor Greg?
Mark
I should have been a bit more clear. It screws into the underside of the side of the thermostat housing – can’t remember which. See Bentleys page 19.11.
From:
Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com]
On Behalf Of Les Harris
Sent: 29 July 2013 15:51
To:
Syncro_T3_Australia@yahoogroups.com
Subject: RE: [Syncro_T3_Australia]
Re: O2 Sensor
Mark,
It’s in the bottom of the thermostat housing. When that malfunctions, everything goes very rough. Given how cheap they are, it is prudent to change it in any event. I had the same problem about a year ago and it was the T2. I changed that and everything instantly went back to normal.
Les
Oh dear, getting worse!! The underside or the bottom . . .
I have a heap of stuff in the back or I would go and look.
From:
Syncro_T3_Australia@yahoogroups.com
[mailto:Syncro_T3_Australia@yahoogroups.com] On
Behalf Of Les Harris
Sent: 29 July 2013 16:02
To:
Syncro_T3_Australia@yahoogroups.com
Subject: RE: [Syncro_T3_Australia]
Re: O2 Sensor
I should have been a bit more clear. It screws into the underside of the side of the thermostat housing – can’t remember which. See Bentleys page 19.11.