Author | Topic |

I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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5M-E Oxy Sensor?
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Fri, 26 September 2003 09:42
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Hey All,
I was just talking to Allan and he came up with the idea of bolting on the Oxygen Sensor into the exhaust and tie it up to the ECU (For Fuel Economy of course).
The question is... Does the Aust. Spec 5M-E ECU support input from the Oxygen Sensor?
Cheers.
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I supported Toymods
Location: I renounced punctuation
Registered: May 2002
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 10:16

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Thanks GT,
I knew you would answer soon. I wasn't game in opening up the ECU just to see if it is a dead end .
Cheers.
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 10:35

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Yep,
Looking at the EPC, the MS123 has an oxygen sensor (PNC:89465-29075) ... Now I have to access whether or not go searching for the ECU and see if it is similar to that of the MA61 ECU plugs
Cheers.
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I supported Toymods
Location: I renounced punctuation
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 10:54

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A cautionary note: Remember that what you see on the EPC will depend on what country it comes from. USA, Japan and many parts of Europe had unleaded fuel (and therefore oxygen sensors) many years before we did. Any 5ME ECUs with oxygen sensor inputs will have to come from cars sold from 1986 onwards here in Australia (the year unleaded fuel was made compulsory).
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 11:12

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Thanks for the tip GT. I was 1 step ahead of you... Did a search and it did come up for Aust. but don't know if it was installed in the 5M-E...
Have to find one that was made between 09-85 to 09-86 to see if one was fitted with the sensor...
Cheers.
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Location: melb
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 12:38

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the epc indicates that the 5MGE was installed from 9/85 onwards.
no point looking for one unless you want to adapt the entire efi system to the 5m-e with questionable results..
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 12:51

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Damn...
Oh well. Looks like I have to live with what I have...
Thanks.
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Location: melb
Registered: June 2003
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Re: 5M-E Oxy Sensor?
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Fri, 26 September 2003 13:53

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Give it some compression look at the ports lose the , if it has, non lock up auto . and bingo 10 l per hundred
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Location: Brisbane
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Sat, 27 September 2003 01:50

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It sucks that they went to all the effort to change the ECU so we don't run an O2 sensor.
After upping the compression and getting a new gear box why doesn't just get a new motor! (2jzge )
Cheers
Wilbo
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Sat, 27 September 2003 02:29

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wilbo666 wrote on Sat, 27 September 2003 11:50 | It sucks that they went to all the effort to change the ECU so we don't run an O2 sensor.
After upping the compression and getting a new gear box why doesn't just get a new motor! (2jzge )
Cheers
Wilbo
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Remember Wilbo, Leaded Petrol and Oxygen Sensors are not best friends
Cheers.
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Location: Brisbane
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Sat, 27 September 2003 06:27

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lol yeah I kinda forget that the 5M-E is meant to take leaded (I just run it on unleaded and it makes no difference to me), cheapo that I am!
Cheers
Wilbo
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Location: Brisbane
Registered: June 2003
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Re: 5M-E Oxy Sensor?
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Sun, 28 September 2003 06:41

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i ran mine on unleaded too...if anything the car ran better, and performed better.
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Location: Melbourne
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Sun, 28 September 2003 10:12

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LRP is absolute crap thats why!
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Location: Adelaide
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 01:12

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Sorry to bring this post up from the dead, but do all 5MGEs have O2 sensors? I have put a 5MGE (no idea of year) in place of the 5ME in my '84 Cressida, but it doesn't have an O2 sensor. Being new to all of this, can someone explain to me if firstly - should it have one? and secondly, where would I look in the engine bay to see if it has just been removed and it did at one stage have one?
My mechanic told me it didn't have one, but no more information than that. Make that my ex-mechanic.
Could this be a cause for my somewhat average fuel consumption on open roads? It seems to really drag along at 100km/h with the fuel indicator showing around 15L/100km.
Thanks a lot guys.
Glen
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Location: Brisbane
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 02:25

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Yes, all 5M-GE's should have an O2 sensor. Look on the exhaust manifold to see if anything has been blocked off; that will tell you if someone has removed it.
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I supported Toymods
Location: I renounced punctuation
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 03:23

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Sounds like the 5MGE has gone in where the 5ME used to be....would be interesting to know what ECU is being used.
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Location: Brisbane
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 04:24

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Good point. My old 6M-GE was running off a 5M-E ECU for a while, so it had an O2 sensor but it wasn't connected to anything.
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Location: Perth
Registered: September 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 04:44

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Norbie wrote on Tue, 14 October 2003 10:25 | Yes, all 5M-GE's should have an O2 sensor. Look on the exhaust manifold to see if anything has been blocked off; that will tell you if someone has removed it.
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nah, the early spec 5mge didnt have o2 sensors
only the late spec ones
the early spec ones had the same ecu and wiring as a 5me, hence, no o2
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I supported Toymods
Location: Perth
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Tue, 14 October 2003 05:01

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The pin is a dead end, but you can't know for sure if it is...open the ECU up and see if it says Ox for one of the pins. My 1GEU has an O2 sensor, so I'd say the 5MGE did...
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Location: Adelaide
Registered: May 2002
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Re: 5M-E Oxy Sensor?
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Wed, 15 October 2003 03:06
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Thanks for all the replies, guys.
Its fairly difficult to get to the ECU (behind the glovebox from memory), but I might give it a go.
We tried to use the existing ECU for the 5ME, however nothing matched up, so we went with a 5MGE ECU. I assume this means that I've got a later model 5MGE? Bear in mind, i bought the ECU and engine at different times, they weren't a matched pair or anything, however everything connected easily.
I can't check the manifold either as all that stuff has been replaced with after-market gear.
Thanks again
Glen
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