[Diy_efi] coolant temperature sensor extension (?!)

95_HCMS sandoren at worldnet.att.net
Sat Jul 20 04:11:49 GMT 2002


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Bruce,

>Might be there to dampen the sensors response.

Generally, an ECT doesn't need to be protected from the coolant by the =
use of a well, correct?  At least, that's what I can see in the shop =
manual for my vehicle - no well.

However, my engine supports a Whipple supercharger.  Perhaps, as you =
describe, it's part of the system requirements related to Whipple's =
specific PROM in the PCM.

Although, the Whipple installation instructions make no mention of using =
a well to connect the ECT to their manifold.

Sounds like another question for Whipple, eh?

Thanks,

Bob
  ----- Original Message -----=20
  From: Bruce=20
  To: diy_efi at diy-efi.org=20
  Sent: Wednesday, July 19, 1995 7:59 PM
  Subject: Re: [Diy_efi] coolant temperature sensor extension (?!)



  Might be there to dampen the sensors response.
  ie be there to cover for not enough filtering in the code, and =
resultant timing/fuel corrections, that result in a lack of smoothness =
in the way the engine runs.
  Bruce

    ----- Original Message -----=20
    From: 95_HCMS=20
    To: diy_efi at diy-efi.org=20
    Sent: Friday, July 19, 2002 10:11 PM
    Subject: [Diy_efi] coolant temperature sensor extension (?!)


    I pulled out my coolant sensor while working to replace my water =
pump and thermostat.

    Strange (?), the sensor is mounted in an extension.  The aluminum =
extension has what looks to be a sensor on the end of it.  When I =
seperated the two, the actual sensor looks normal except for what looks =
like a little lithium grease inside the extension where the actual =
sensor resides.

    What's odd, is that the threads on the extension are the same size =
threads on the sensor.

    Why would this combination exist?  Am I missing something, here?

    Can I dump the extension and just put only the sensor back in the =
block?

    Does anyone have any incite into this combination/situation?

    Thanks,

    Bob

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<DIV><FONT face=3DArial size=3D2>Bruce,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>&gt;<FONT face=3DArial size=3D2>Might =
be there to=20
dampen the sensors response.</FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Generally, an ECT doesn't need to be =
protected from=20
the coolant by the use of a well, correct?&nbsp; At least, that's what I =
can see=20
in the shop manual for my vehicle - no well.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>However, my engine supports a Whipple=20
supercharger.&nbsp; Perhaps, as you describe, it's part of the system=20
requirements related to&nbsp;Whipple's specific PROM in the =
PCM.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2>Although, the Whipple installation =
instructions=20
make no mention of using a well to connect the ECT to their=20
manifold.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Sounds like another question for =
Whipple,=20
eh?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV>Thanks,</DIV>
<DIV>&nbsp;</DIV>
<DIV></FONT><FONT face=3DArial size=3D2>Bob</FONT></DIV></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dnacelp at bright.net =
href=3D"mailto:nacelp at bright.net">Bruce</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Ddiy_efi at diy-efi.org=20
  href=3D"mailto:diy_efi at diy-efi.org">diy_efi at diy-efi.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, July 19, 1995 =
7:59=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Diy_efi] coolant=20
  temperature sensor extension (?!)</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Might be there to dampen the sensors=20
  response.</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>ie be&nbsp;there to cover for not =
enough=20
  filtering in the code, and resultant timing/fuel corrections, that =
result in a=20
  lack of smoothness in the way the engine runs.</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>Bruce</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <BLOCKQUOTE dir=3Dltr=20
  style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
    <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
    <DIV=20
    style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
    <A title=3Dsandoren at worldnet.att.net=20
    href=3D"mailto:sandoren at worldnet.att.net">95_HCMS</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Ddiy_efi at diy-efi.org=20
    href=3D"mailto:diy_efi at diy-efi.org">diy_efi at diy-efi.org</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, July 19, 2002 =
10:11=20
    PM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Diy_efi] coolant =
temperature=20
    sensor extension (?!)</DIV>
    <DIV><BR></DIV>
    <DIV><FONT face=3DArial size=3D2>I pulled out my coolant sensor =
while working to=20
    replace my water pump and thermostat.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Strange (?), the sensor is mounted =
in an=20
    extension.&nbsp; The aluminum extension has what looks to be a =
sensor on the=20
    end of it.&nbsp; When I seperated the two, the actual sensor looks =
normal=20
    except for what looks like a little lithium grease inside the =
extension=20
    where the actual sensor resides.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>What's odd, is that the threads on =
the=20
    extension are the same size threads&nbsp;on the sensor.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Why would this combination =
exist?&nbsp; Am I=20
    missing something, here?</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Can I dump the extension and just =
put only the=20
    sensor back in the block?</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Does anyone have any incite into =
this=20
    combination/situation?</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
    <DIV><FONT face=3DArial=20
size=3D2>Bob</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>

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