[Diy_efi] What Injector Is This?

Mon Apr 7 13:47:03 GMT 2003

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mike,
that makes sense.
unfortunately where mine is is such a pain to get to, i opted for the easy
test, lol.
thanks,
joe

-----Original Message-----
From: Mike [mailto:erazmus at iinet.net.au]
Sent: Monday, April 07, 2003 7:52 AM
To: List for general do-it-yourself EFI talk
Subject: RE: [Diy_efi] What Injector Is This?

With the MAF on my Bosch ECU, doing that doesnt run the burn
cycle, I have to run my engine for at least a couple of
minutes before the ECU thinks it needs to do the cycle,

rgds

mike

At 07:29 AM 4/7/03 -0500, you wrote:
>    
>  I cleaned my Pro-M maf elements this weekend and looked for the elements
>to glow on either power-on or power-off. 
>It didn't glow at either time. 
>Now, I wasn't actually running the engine before power-off, I just kept the
>key on for a minute. 
>Again, this is on a Ford Mustang.   -----Original Message----- 
From: Perry Harrington [mailto:pedward at apsoft.com] 
>Sent: Thursday, April 03, 2003 11:20 PM 
>To: List for general do-it-yourself EFI talk 
>Subject: Re: [Diy_efi] What Injector Is This?  
>  Mike,      Consider 
>  If it's 100 degrees ambient, that element 
>  That is about like a soldering iron.   The bosch MAFs don't get nearly
>that hot, that's why they have a burn 
>off pulse.   ""  The 
>circuitry inside is just the driver and calibration.     The MAF is
directly 
>  When 
>the ECU powers down the MAF loses all power.   --Perry   On Fri, Apr 04,
>2003 at 11:40:04AM +0800, Mike wrote: 
>> At 12:14 PM 4/3/03 -0800, you wrote: 
>>>My Probst book has a blurb about the MAF, I'll fine the schematic 
>>>of it elsewhere. 
>>  
>> Great, I'm interested in alternatives, 
>>  
>>>The cold wire which is not exposed to the air stream is not heated, 
>>>  The Hot wire is heated to 200C above 
>>>ambient, so you can see, it's always very hot. 
>>  
>> Yes true, I have the old Bosch yellow book from 1982 same mostly, 
>>  
>> I'm curious if you have ever looked down the throat of the AFM 
>> when powering off etc ? 
>>  
>> rdgs 
>>  
>> mike 
>>  
>>  
>>  
>>  
>>>--Perry 
>>> 
>>>On Thu, Apr 03, 2003 at 07:36:22PM +0800, Mike wrote: 
>>>> Its very similar, the bosch element in mine is not 
>>>> that small - looks like the wire length is some 60mm 
>>>> arranged in a loop. 
>>>>  
>>>> I dont think its a design issue (read flaw) wich means 
>>>> the Bosch 'needs' a large clean current as might be 
>>>> implied. Bosch seem to go to some trouble with 
>>>> issues like cal and an automatic clean as such is 
>>>> bound to be more reliable than relying on people to 
>>>> do it - which I still find perplexing. 
>>>>  
>>>> Have you ever looked into the throat of one of these 
>>>> ford MAFs and watched if it does or doesnt apply a 
>>>> current pulse - maybe it does but its not enough to 
>>>> make the wire glow. 
>>>>  
>>>> Yes, I would like to see a schema of the ford MAF, 
>>>> the 'clean' may well be supplied by the ecu and not 
>>>> be inherent in the MAF as it is for bosch, as far 
>>>> as I can determine from all I've read on these 
>>>> issues - some sort of 'clean' burn is very helpful... 
>>>>  
>>>> rgds 
>>>>  
>>>> mike 
>>> 
>>>--  
>>>                  & Instrumentation, Inc  
>>>                                   http://www.dainst.com/ 
>>> 
>>>Those who would give up essential liberty to purchase a little temporary 
>> safety 
>>>deserve neither liberty or safety. Nor, are they likely to end up with 
>> either. 
>>>                             -- Benjamin Franklin 
>>> 
>>>_______________________________________________ 
>>>Diy_efi mailing list 
>>>Diy_efi at diy-efi.org 
>>>http://www.diy-efi.org/mailman/listinfo/diy_efi 
>>> 
>>> 
>>  
>> _______________________________________________ 
>> Diy_efi mailing list 
>> Diy_efi at diy-efi.org 
>> http://www.diy-efi.org/mailman/listinfo/diy_efi   --  
>                     & Instrumentation, Inc  
>                              http://www.dainst.com/   Those who would give
>up essential liberty to purchase a little temporary safety 
>deserve neither liberty or safety. Nor, are they likely to end up with
either. 
>                             -- Benjamin Franklin  
>_______________________________________________ 
>Diy_efi mailing list 
>Diy_efi at diy-efi.org 
>http://www.diy-efi.org/mailman/listinfo/diy_efi   
>_______________________________________________ Diy_efi mailing list
>Diy_efi at diy-efi.org http://www.diy-efi.org/mailman/listinfo/diy_efi 

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<P><FONT SIZE=2>mike,</FONT>
<BR><FONT SIZE=2>that makes sense.</FONT>
<BR><FONT SIZE=2>unfortunately where mine is is such a pain to get to, i opted for the easy test, lol.</FONT>
<BR><FONT SIZE=2>thanks,</FONT>
<BR><FONT SIZE=2>joe</FONT>
</P>

<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Mike [<A HREF="mailto:erazmus at iinet.net.au">mailto:erazmus at iinet.net.au</A>]</FONT>
<BR><FONT SIZE=2>Sent: Monday, April 07, 2003 7:52 AM</FONT>
<BR><FONT SIZE=2>To: List for general do-it-yourself EFI talk</FONT>
<BR><FONT SIZE=2>Subject: RE: [Diy_efi] What Injector Is This?</FONT>
</P>
<BR>

<P><FONT SIZE=2>With the MAF on my Bosch ECU, doing that doesnt run the burn</FONT>
<BR><FONT SIZE=2>cycle, I have to run my engine for at least a couple of</FONT>
<BR><FONT SIZE=2>minutes before the ECU thinks it needs to do the cycle,</FONT>
</P>

<P><FONT SIZE=2>rgds</FONT>
</P>

<P><FONT SIZE=2>mike</FONT>
</P>

At 07:29 AM 4/7/03 -0500, you wrote:
 &gt;&nbsp;&nbsp;&nbsp; 
 &gt;&nbsp; I cleaned my Pro-M maf elements this weekend and looked for the elements
 &gt;to glow on either power-on or power-off. 
 &gt;It didn't glow at either time. 
 &gt;Now, I wasn't actually running the engine before power-off, I just kept the
 &gt;key on for a minute. 
 &gt;Again, this is on a Ford Mustang.&nbsp;&nbsp; -----Original Message----- 
 &gt;From: Perry Harrington [<A HREF="mailto:pedward at apsoft.com">mailto:pedward at apsoft.com</A>] 
 &gt;Sent: Thursday, April 03, 2003 11:20 PM 
 &gt;To: List for general do-it-yourself EFI talk 
 &gt;Subject: Re: [Diy_efi] What Injector Is This?&nbsp; 
 &gt;&nbsp; Mike,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Consider 
 &gt;&nbsp; If it's 100 degrees ambient, that element 
 &gt;&nbsp; That is about like a soldering iron.&nbsp;&nbsp; The bosch MAFs don't get nearly
 &gt;that hot, that's why they have a burn 
 &gt;off pulse.&nbsp;&nbsp; &quot;&quot;&nbsp; The 
 &gt;circuitry inside is just the driver and calibration.&nbsp;&nbsp;&nbsp;&nbsp; The MAF is directly 
 &gt;&nbsp; When 
 &gt;the ECU powers down the MAF loses all power.&nbsp;&nbsp; --Perry&nbsp;&nbsp; On Fri, Apr 04,
 &gt;2003 at 11:40:04AM +0800, Mike wrote: 
 &gt;&gt; At 12:14 PM 4/3/03 -0800, you wrote: 
 &gt;&gt;&gt;My Probst book has a blurb about the MAF, I'll fine the schematic 
 &gt;&gt;&gt;of it elsewhere. 
 &gt;&gt;&nbsp; 
 &gt;&gt; Great, I'm interested in alternatives, 
 &gt;&gt;&nbsp; 
 &gt;&gt;&gt;The cold wire which is not exposed to the air stream is not heated, 
 &gt;&gt;&gt;&nbsp; The Hot wire is heated to 200C above 
 &gt;&gt;&gt;ambient, so you can see, it's always very hot. 
 &gt;&gt;&nbsp; 
 &gt;&gt; Yes true, I have the old Bosch yellow book from 1982 same mostly, 
 &gt;&gt;&nbsp; 
 &gt;&gt; I'm curious if you have ever looked down the throat of the AFM 
 &gt;&gt; when powering off etc ? 
 &gt;&gt;&nbsp; 
 &gt;&gt; rdgs 
 &gt;&gt;&nbsp; 
 &gt;&gt; mike 
 &gt;&gt;&nbsp; 
 &gt;&gt;&nbsp; 
 &gt;&gt;&nbsp; 
 &gt;&gt;&nbsp; 
 &gt;&gt;&gt;--Perry 
 &gt;&gt;&gt; 
 &gt;&gt;&gt;On Thu, Apr 03, 2003 at 07:36:22PM +0800, Mike wrote: 
 &gt;&gt;&gt;&gt; Its very similar, the bosch element in mine is not 
 &gt;&gt;&gt;&gt; that small - looks like the wire length is some 60mm 
 &gt;&gt;&gt;&gt; arranged in a loop. 
 &gt;&gt;&gt;&gt;&nbsp; 
 &gt;&gt;&gt;&gt; I dont think its a design issue (read flaw) wich means 
 &gt;&gt;&gt;&gt; the Bosch 'needs' a large clean current as might be 
 &gt;&gt;&gt;&gt; implied. Bosch seem to go to some trouble with 
 &gt;&gt;&gt;&gt; issues like cal and an automatic clean as such is 
 &gt;&gt;&gt;&gt; bound to be more reliable than relying on people to 
 &gt;&gt;&gt;&gt; do it - which I still find perplexing. 
 &gt;&gt;&gt;&gt;&nbsp; 
 &gt;&gt;&gt;&gt; Have you ever looked into the throat of one of these 
 &gt;&gt;&gt;&gt; ford MAFs and watched if it does or doesnt apply a 
 &gt;&gt;&gt;&gt; current pulse - maybe it does but its not enough to 
 &gt;&gt;&gt;&gt; make the wire glow. 
 &gt;&gt;&gt;&gt;&nbsp; 
 &gt;&gt;&gt;&gt; Yes, I would like to see a schema of the ford MAF, 
 &gt;&gt;&gt;&gt; the 'clean' may well be supplied by the ecu and not 
 &gt;&gt;&gt;&gt; be inherent in the MAF as it is for bosch, as far 
 &gt;&gt;&gt;&gt; as I can determine from all I've read on these 
 &gt;&gt;&gt;&gt; issues - some sort of 'clean' burn is very helpful... 
 &gt;&gt;&gt;&gt;&nbsp; 
 &gt;&gt;&gt;&gt; rgds 
 &gt;&gt;&gt;&gt;&nbsp; 
 &gt;&gt;&gt;&gt; mike 
 &gt;&gt;&gt; 
 &gt;&gt;&gt;--&nbsp; 
 &gt;&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp; Instrumentation, Inc&nbsp; 
 &gt;&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <A HREF="http://www.dainst.com/" TARGET="_blank">http://www.dainst.com/</A> 
 &gt;&gt;&gt; 
 &gt;&gt;&gt;Those who would give up essential liberty to purchase a little temporary 
 &gt;&gt; safety 
 &gt;&gt;&gt;deserve neither liberty or safety. Nor, are they likely to end up with 
 &gt;&gt; either. 
 &gt;&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Benjamin Franklin 
 &gt;&gt;&gt; 
 &gt;&gt;&gt;_______________________________________________ 
 &gt;&gt;&gt;Diy_efi mailing list 
 &gt;&gt;&gt;Diy_efi at diy-efi.org 
 &gt;&gt;&gt;<A HREF="http://www.diy-efi.org/mailman/listinfo/diy_efi" TARGET="_blank">http://www.diy-efi.org/mailman/listinfo/diy_efi</A> 
 &gt;&gt;&gt; 
 &gt;&gt;&gt; 
 &gt;&gt;&nbsp; 
 &gt;&gt; _______________________________________________ 
 &gt;&gt; Diy_efi mailing list 
 &gt;&gt; Diy_efi at diy-efi.org 
 &gt;&gt; <A HREF="http://www.diy-efi.org/mailman/listinfo/diy_efi" TARGET="_blank">http://www.diy-efi.org/mailman/listinfo/diy_efi</A>&nbsp;&nbsp; --&nbsp; 
 &gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp; Instrumentation, Inc&nbsp; 
 &gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <A HREF="http://www.dainst.com/" TARGET="_blank">http://www.dainst.com/</A>&nbsp;&nbsp; Those who would give
 &gt;up essential liberty to purchase a little temporary safety 
 &gt;deserve neither liberty or safety. Nor, are they likely to end up with
 either. 
 &gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Benjamin Franklin&nbsp; 
 &gt;_______________________________________________ 
 &gt;Diy_efi mailing list 
 &gt;Diy_efi at diy-efi.org 
 &gt;<A HREF="http://www.diy-efi.org/mailman/listinfo/diy_efi" TARGET="_blank">http://www.diy-efi.org/mailman/listinfo/diy_efi</A>&nbsp;&nbsp; 
 &gt;_______________________________________________ Diy_efi mailing list
 &gt;Diy_efi at diy-efi.org <A HREF="http://www.diy-efi.org/mailman/listinfo/diy_efi" TARGET="_blank">http://www.diy-efi.org/mailman/listinfo/diy_efi</A>

<P><FONT SIZE=2>_______________________________________________</FONT>
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