[Diy_efi] Question on Knock Sensors
don.broadus at exeloncorp.com
don.broadus at exeloncorp.com
Tue Feb 22 15:05:37 GMT 2005
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I have collected 14 different sensors for testing and have only found the DR
number or in the case of a Quad 4 10456209 number.
The last 4 digits are the date code. Usually the year and day of
manufacture (Julian Calendar). I have profiled the sensors by getting a 1/4
NPT pipe coupling and screwing one sensor in one end and another sensor in
the other end. I set up with 2 DR562 sensors. I applied a sine wave
from a HP 3324A to one sensor and looked at the output of the other sensor
with a Nicolet 440 scope. with 1 VPP amplitude I sweep the frequencies from
1Khz to 50 Khz The highest amplitude was always at 6 Khz. Of the 14
sensors I tested they all responded the same. I concluded that the sensors
are not all that different and could be interchanged.I then tested 9
external det modules from AASS,HKD,HKR,BLN,ANBZ ect. The output is 10 volt
until between 4 Khz and 12 Khz the output would go low . Again 6 Khz was the
sweet spot.
-----Original Message-----
From: David Dowell [mailto:dowelljd at alltel.net]
Sent: Monday, February 21, 2005 8:22 PM
To: A list for Do-It-Yourself EFI
Subject: [Diy_efi] Question on Knock Sensors
Hi All,
I went to the junk yard to gather parts and pulled several knock sensors off
of Chevy Suburbans with 350 CID engines.
When I got back to the house with them and cleaned them up, none have the GM
numbers that are listed as being for 350s. In fact, all the sensors have a
number that starts with DR-699-#### where the # is a number. In addition,
all of them have different numbers for the last 4 numbers (####).
Can anyone out there tell me what these numbers are for? Do you have a
cross reference to the GM part #'s.
Thanks for the help.
Dave
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<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff size=2>I have
collected 14 different sensors for testing and have only found the DR number or
in the case of a Quad 4 10456209 number.</FONT></SPAN></DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff size=2>The
last 4 digits are the date code. Usually the year and day of
manufacture (Julian Calendar). I have profiled the sensors by getting a
1/4 NPT pipe coupling and screwing one sensor in one end and another sensor in
the other end. I set up with 2 DR562
sensors. I applied a sine wave from a HP 3324A to one sensor and looked at the
output of the other sensor with a Nicolet 440 scope. with 1 VPP amplitude I
sweep the frequencies from 1Khz to 50 Khz The highest amplitude was always
at 6 Khz. Of the 14 </FONT></SPAN></DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2>sensors I tested they all responded the same. I concluded that the
sensors are not all that different and could be interchanged.I then tested 9
external det modules from AASS,HKD,HKR,BLN,ANBZ ect. The output is 10 volt
until between 4 Khz and 12 Khz the output would go low . Again 6 Khz was
the sweet spot. </FONT> </SPAN><SPAN
class=586422114-22022005><FONT face=Arial color=#0000ff
size=2> <BR></DIV></FONT></SPAN>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=586422114-22022005> </SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> David Dowell
[mailto:dowelljd at alltel.net]<BR><B>Sent:</B> Monday, February 21, 2005 8:22
PM<BR><B>To:</B> A list for Do-It-Yourself EFI<BR><B>Subject:</B> [Diy_efi]
Question on Knock Sensors<BR><BR></FONT></DIV>
<DIV><FONT face=Arial>Hi All,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I went to the junk yard to gather parts and pulled
several knock sensors off of Chevy Suburbans with 350 CID
engines.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>When I got back to the house with them and cleaned them
up, none have the GM numbers that are listed as being for 350s. In fact,
all the sensors have a number that starts with DR-699-#### where the # is a
number. In addition, all of them have different numbers for the last 4
numbers (####). </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Can anyone out there tell me what these numbers are
for? Do you have a cross reference to the GM part #'s.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Thanks for the help.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Dave</FONT></DIV></BLOCKQUOTE><FONT SIZE=3><BR>
<BR>
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This e-mail and any of its attachments may contain Exelon Corporation<BR>
proprietary information, which is privileged, confidential, or subject <BR>
to copyright belonging to the Exelon Corporation family of Companies. <BR>
This e-mail is intended solely for the use of the individual or entity <BR>
to which it is addressed. If you are not the intended recipient of this <BR>
e-mail, you are hereby notified that any dissemination, distribution, <BR>
copying, or action taken in relation to the contents of and attachments <BR>
to this e-mail is strictly prohibited and may be unlawful. If you have <BR>
received this e-mail in error, please notify the sender immediately and <BR>
permanently delete the original and any copy of this e-mail and any <BR>
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