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Next: 1968 Pontiac GTO.
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External
Since: May 04, 2006
Posts: 69
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(Msg. 1) Posted: Fri May 25, 2007 4:56 pm
Post subject: Ignition Timing, 88 'Supra 7M-GE NA Stock
Archived from groups: alt>autos>toyota, others (more info?)
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OK. Did my plugs, wires etc back in January. Car was running OK, passed Fed emissions with high NOx. Decided to check the timing. Shorted E1&T and hit it with the light. It was way advanced, so I reset the timing to 10DBTDC just like the manual says. Removed the jumper from E1-T and the timing stayed exactly the same. This leads me to one of two conclusions:
The advance isn't working (backed up by the higher than usual NOx readings) or
The advance is ALWAYS on.
Suggestions/Advice welcome! I check the vacuum routing according to the
hood, everything looks OK. What else should I be guessin..er, looking for? 
Cross posting to Camry in hopes QSlim may be chcking in... |
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External
Since: Mar 22, 2007
Posts: 49
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(Msg. 2) Posted: Fri May 25, 2007 10:55 pm
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: alt>autos>toyota (more info?)
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hachiroku wrote:
> OK. Did my plugs, wires etc back in January. Car was running OK, passed Fed emissions with high NOx. Decided to check the timing. Shorted E1&T and hit it with the light. It was way advanced, so I reset the timing to 10DBTDC just like the manual says. Removed the jumper from E1-T and the timing stayed exactly the same. This leads me to one of two conclusions:
> The advance isn't working (backed up by the higher than usual NOx readings) or
> The advance is ALWAYS on.
>
> Suggestions/Advice welcome! I check the vacuum routing according to the
> hood, everything looks OK. What else should I be guessin..er, looking for?
>
> Cross posting to Camry in hopes QSlim may be chcking in...
Does the timing advance when you free rev it??. I would have thought
that in an perfect world the timing should not move after you reset it
at idle if it was done correctly, but go off scale when you free rev it.
At least that's what my 6M did and my dads 3S do. |
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External
Since: Nov 20, 2006
Posts: 2548
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(Msg. 3) Posted: Fri May 25, 2007 11:55 pm
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sat, 26 May 2007 11:59:15 +1000, Nick Bourne wrote:
> hachiroku wrote:
>> OK. Did my plugs, wires etc back in January. Car was running OK, passed
>> Fed emissions with high NOx. Decided to check the timing. Shorted E1&T
>> and hit it with the light. It was way advanced, so I reset the timing to
>> 10DBTDC just like the manual says. Removed the jumper from E1-T and the
>> timing stayed exactly the same. This leads me to one of two conclusions:
>> The advance isn't working (backed up by the higher than usual NOx
>> readings) or The advance is ALWAYS on.
>>
>> Suggestions/Advice welcome! I check the vacuum routing according to the
>> hood, everything looks OK. What else should I be guessin..er, looking
>> for?
>>
>> Cross posting to Camry in hopes QSlim may be chcking in...
>
>
> Does the timing advance when you free rev it??. I would have thought that
> in an perfect world the timing should not move after you reset it at idle
> if it was done correctly, but go off scale when you free rev it. At least
> that's what my 6M did and my dads 3S do.
Hmmm....I had a Celica w/a 22RE, and as soon as you removed the jumper the
engine would advance off the scale. I had another car I set the timing on
that did this, too.
Now, I shorted E1-T, and appeared to make no difference. I also noted on
the hood diagram that it showed a plug similar to what I had on my Celica
that you shunted to set the timing. But, those terminals were marked E1 &
T also.
Perhaps the E1 & T connectors in the Diagnostics block is different from
the plug used to set the timing???? >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Mar 22, 2007
Posts: 49
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(Msg. 4) Posted: Sat May 26, 2007 1:55 am
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Hachiroku ハチロク wrote:
> On Sat, 26 May 2007 11:59:15 +1000, Nick Bourne wrote:
>
>> hachiroku wrote:
>>> OK. Did my plugs, wires etc back in January. Car was running OK, passed
>>> Fed emissions with high NOx. Decided to check the timing. Shorted E1&T
>>> and hit it with the light. It was way advanced, so I reset the timing to
>>> 10DBTDC just like the manual says. Removed the jumper from E1-T and the
>>> timing stayed exactly the same. This leads me to one of two conclusions:
>>> The advance isn't working (backed up by the higher than usual NOx
>>> readings) or The advance is ALWAYS on.
>>>
>>> Suggestions/Advice welcome! I check the vacuum routing according to the
>>> hood, everything looks OK. What else should I be guessin..er, looking
>>> for?
>>>
>>> Cross posting to Camry in hopes QSlim may be chcking in...
>>
>> Does the timing advance when you free rev it??. I would have thought that
>> in an perfect world the timing should not move after you reset it at idle
>> if it was done correctly, but go off scale when you free rev it. At least
>> that's what my 6M did and my dads 3S do.
>
>
> Hmmm....I had a Celica w/a 22RE, and as soon as you removed the jumper the
> engine would advance off the scale. I had another car I set the timing on
> that did this, too.
>
> Now, I shorted E1-T, and appeared to make no difference. I also noted on
> the hood diagram that it showed a plug similar to what I had on my Celica
> that you shunted to set the timing. But, those terminals were marked E1 &
> T also.
>
> Perhaps the E1 & T connectors in the Diagnostics block is different from
> the plug used to set the timing????
>
>
Yep, T and e1 are the terminals I always used and in the diagnostics
block. I never connected for disconnected them with the ignition on though.
Do you have a BGB or do you use a Haynes manual or similar?
I'll have a look through my BGB for my cressida, the ECU and motor
5M/6M-GE combo is basically similar to the 7M atmo.
Get back to you in a couple of hours. >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Apr 08, 2006
Posts: 280
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(Msg. 5) Posted: Sat May 26, 2007 5:55 am
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: alt>autos>toyota, others (more info?)
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"hachiroku" <Trueno DeleteThis @ae86.GTS> wrote in message news:pan.2007.05.25.19.20.47.343000@ae86.GTS...
> OK. Did my plugs, wires etc back in January. Car was running OK, passed Fed emissions with high NOx. Decided to check the timing.
> Shorted E1&T and hit it with the light. It was way advanced, so I reset the timing to 10DBTDC just like the manual says. Removed
> the jumper from E1-T and the timing stayed exactly the same. This leads me to one of two conclusions:
> The advance isn't working (backed up by the higher than usual NOx readings) or
> The advance is ALWAYS on.
>
> Suggestions/Advice welcome! I check the vacuum routing according to the
> hood, everything looks OK. What else should I be guessin..er, looking for?
>
> Cross posting to Camry in hopes QSlim may be chcking in...
If the timing light does not show advance when you rev the engine (without the jumper)
something is wrong. Maybe you have a blown fuse. Do you get a trouble code? >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Mar 22, 2007
Posts: 49
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(Msg. 6) Posted: Sat May 26, 2007 6:55 am
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: alt>autos>toyota (more info?)
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Nick Bourne wrote:
> Hachiroku ハチロク wrote:
>> On Sat, 26 May 2007 11:59:15 +1000, Nick Bourne wrote:
>>
>>> hachiroku wrote:
>>>> OK. Did my plugs, wires etc back in January. Car was running OK, passed
>>>> Fed emissions with high NOx. Decided to check the timing. Shorted E1&T
>>>> and hit it with the light. It was way advanced, so I reset the
>>>> timing to
>>>> 10DBTDC just like the manual says. Removed the jumper from E1-T and the
>>>> timing stayed exactly the same. This leads me to one of two
>>>> conclusions:
>>>> The advance isn't working (backed up by the higher than usual NOx
>>>> readings) or The advance is ALWAYS on.
>>>>
>>>> Suggestions/Advice welcome! I check the vacuum routing according to the
>>>> hood, everything looks OK. What else should I be guessin..er, looking
>>>> for?
>>>>
>>>> Cross posting to Camry in hopes QSlim may be chcking in...
>>>
>>> Does the timing advance when you free rev it??. I would have thought
>>> that
>>> in an perfect world the timing should not move after you reset it at
>>> idle
>>> if it was done correctly, but go off scale when you free rev it. At
>>> least
>>> that's what my 6M did and my dads 3S do.
>>
>>
>> Hmmm....I had a Celica w/a 22RE, and as soon as you removed the jumper
>> the
>> engine would advance off the scale. I had another car I set the timing on
>> that did this, too.
>> Now, I shorted E1-T, and appeared to make no difference. I also noted on
>> the hood diagram that it showed a plug similar to what I had on my Celica
>> that you shunted to set the timing. But, those terminals were marked E1 &
>> T also.
>> Perhaps the E1 & T connectors in the Diagnostics block is different from
>> the plug used to set the timing????
>>
>>
>
> Yep, T and e1 are the terminals I always used and in the diagnostics
> block. I never connected for disconnected them with the ignition on though.
>
> Do you have a BGB or do you use a Haynes manual or similar?
>
> I'll have a look through my BGB for my cressida, the ECU and motor
> 5M/6M-GE combo is basically similar to the 7M atmo.
> Get back to you in a couple of hours.
All the BGB says for your original issue with high NOx is to check the
EGR circuit, but did the 7M still have a EGR system? My JDM 6M didn't.
How far advanced was the timing before you reset it? Also was the motor
at normal operating temp.
Also I had a thought that advance always on would not really send you
NOx up. Do you think you could be getting a lean mix somehow? Is there a
small air leak?
Other than that I'm out of idea's. Sorry I cant be more helpful. >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Nov 20, 2006
Posts: 2548
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(Msg. 7) Posted: Sat May 26, 2007 1:55 pm
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sat, 26 May 2007 19:17:40 +1000, Nick Bourne wrote:
> Nick Bourne wrote:
>> Hachiroku ハチロク wrote:
>>> On Sat, 26 May 2007 11:59:15 +1000, Nick Bourne wrote:
>>>
>>>> hachiroku wrote:
>>>>> OK. Did my plugs, wires etc back in January. Car was running OK,
>>>>> passed Fed emissions with high NOx. Decided to check the timing.
>>>>> Shorted E1&T and hit it with the light. It was way advanced, so I
>>>>> reset the timing to
>>>>> 10DBTDC just like the manual says. Removed the jumper from E1-T and
>>>>> the timing stayed exactly the same. This leads me to one of two
>>>>> conclusions:
>>>>> The advance isn't working (backed up by the higher than usual NOx
>>>>> readings) or The advance is ALWAYS on.
>>>>>
>>>>> Suggestions/Advice welcome! I check the vacuum routing according to
>>>>> the hood, everything looks OK. What else should I be guessin..er,
>>>>> looking for?
>>>>>
>>>>> Cross posting to Camry in hopes QSlim may be chcking in...
>>>>
>>>> Does the timing advance when you free rev it??. I would have thought
>>>> that
>>>> in an perfect world the timing should not move after you reset it at
>>>> idle
>>>> if it was done correctly, but go off scale when you free rev it. At
>>>> least
>>>> that's what my 6M did and my dads 3S do.
>>>
>>>
>>> Hmmm....I had a Celica w/a 22RE, and as soon as you removed the jumper
>>> the
>>> engine would advance off the scale. I had another car I set the timing
>>> on that did this, too.
>>> Now, I shorted E1-T, and appeared to make no difference. I also noted
>>> on the hood diagram that it showed a plug similar to what I had on my
>>> Celica that you shunted to set the timing. But, those terminals were
>>> marked E1 & T also.
>>> Perhaps the E1 & T connectors in the Diagnostics block is different
>>> from the plug used to set the timing????
>>>
>>>
>>>
>> Yep, T and e1 are the terminals I always used and in the diagnostics
>> block. I never connected for disconnected them with the ignition on
>> though.
>>
>> Do you have a BGB or do you use a Haynes manual or similar?
>>
>> I'll have a look through my BGB for my cressida, the ECU and motor
>> 5M/6M-GE combo is basically similar to the 7M atmo. Get back to you in a
>> couple of hours.
>
>
> All the BGB says for your original issue with high NOx is to check the EGR
> circuit, but did the 7M still have a EGR system? My JDM 6M didn't.
>
> How far advanced was the timing before you reset it? Also was the motor at
> normal operating temp.
>
> Also I had a thought that advance always on would not really send you NOx
> up. Do you think you could be getting a lean mix somehow? Is there a small
> air leak?
>
> Other than that I'm out of idea's. Sorry I cant be more helpful.
Someone said to remove the EFI fuse for thirty seconds and start over.
Now, I have done this with a handful of Toys and it has NEVER made a
difference.
What the hell...I'll try it. The idle dropped SO low it had truble kicking
into first gear. I reset the timing to the factory 10DBTDC...WHOA!
Now THAT'S more like it!!!! Yeeeee-Haaaaa!
(Now, to get rid of that slushbox Automatic... >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Jan 03, 2005
Posts: 235
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(Msg. 8) Posted: Sun May 27, 2007 8:48 am
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Hey man. I put a post up in the camry forum. I still check in here from
time to time, but it seems every time I do my reader gets inundated with
posts about why GM is better than Toyota, why Toyota is better than GM,
something about nude beaches, and the inevitable "when should I change my
oil, and is synthetic better" thread. >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Nov 20, 2006
Posts: 2548
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(Msg. 9) Posted: Sun May 27, 2007 6:09 pm
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sun, 27 May 2007 08:48:40 -0400, qslim wrote:
> Hey man. I put a post up in the camry forum. I still check in here from
> time to time, but it seems every time I do my reader gets inundated with
> posts about why GM is better than Toyota, why Toyota is better than GM,
> something about nude beaches, and the inevitable "when should I change my
> oil, and is synthetic better" thread.
Not to mention the Dems did this, the Libs did that, etc.
Hey, wanna see my webcam? >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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External
Since: Jan 03, 2005
Posts: 235
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(Msg. 10) Posted: Sun May 27, 2007 8:43 pm
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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hey man. I put a post up in Camry. I do check in here from time to time,
but it seems that whenever I do there is a gigantic GM vs Toyota thread,
something about nude beaches, and the standard issue "when should I change
my oil and should I use synthetic" debate. >> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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Joined: Jun 11, 2007
Posts: 8
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(Msg. 11) Posted: Sat Jun 23, 2007 1:52 am
Post subject: Re: Ignition Timing, 88 'Supra 7M-GE NA Stock [Login to view extended thread Info.]
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| hachiroku wrote: |
OK. Did my plugs, wires etc back in January. Car was running OK, passed Fed emissions with high NOx. Decided to check the timing. Shorted E1&T and hit it with the light. It was way advanced, so I reset the timing to 10DBTDC just like the manual says. Removed the jumper from E1-T and the timing stayed exactly the same. This leads me to one of two conclusions:
The advance isn't working (backed up by the higher than usual NOx readings) or
The advance is ALWAYS on.
Suggestions/Advice welcome! I check the vacuum routing according to the
hood, everything looks OK. What else should I be guessin..er, looking for?
Cross posting to Camry in hopes QSlim may be chcking in... |
Maybe you should try to replace the http://www.autotoyparts.com/toyota-timing-belts/ (Toyota Timing Belt). It seems that your problem is rooted there so try taking it off.
>> Stay informed about: Ignition Timing, 88 'Supra 7M-GE NA Stock |
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| Related Topics: | supra - Sura's are my favourite car I was wondering if anyone could tell me where I could find if their is still production in any country . I know for a fact that they stoped production in Australia in 1992 thanks in advance
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