Duramax Diesels Forum Truck of the Week
  #1  
Old 12-19-2010, 06:44 AM
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o4twinpeaks o4twinpeaks is offline
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Default fuel temp sensor question

Where is the sensor located on an 05 lly? I looked online and from what I gather it's on the driver side fuel rail in the back under the glow plug module but I don't see it. Its cold outside and only have about 30 min of daylight left when I get home at night.

I was going through pictures of changing the head gaskets and I see no sensor at all on the driver side fuel rail. There is a sensor on the pass side rail in the middle.

Also dose anyone have a factory service manual that has the testing procedure for the fuel temp sensor? Just need to know the ranges of resistance that the factory says is good.

Thanks

Tom
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Old 12-19-2010, 06:46 AM
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Default

Ok did a little more searching on here and it looks like they are saying it is in the return line on the drivers side.

New question does the ecm adjust fuel delivery according to fuel temp? I know there is a high limit that it defuels at but is there an optimal temp for the computer to see for max fueling
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Last edited by o4twinpeaks; 12-19-2010 at 06:54 AM.
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Old 12-20-2010, 10:35 PM
mikewayne mikewayne is offline
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I don't think any fuel temperature sensor need for any truck as in liquid state its always going to work and it works normally.... I don't think any ride comes with fuel temperature sensor.... other than big money cars if you want get a sensor attached.... no big deal in that!!!
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Old 12-20-2010, 10:47 PM
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Originally Posted by mikewayne View Post
I don't think any fuel temperature sensor need for any truck as in liquid state its always going to work and it works normally.... I don't think any ride comes with fuel temperature sensor.... other than big money cars if you want get a sensor attached.... no big deal in that!!!
How about those Mets?


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Wendy 06 GMC LBZ CC/SB EFI "Rat Posion", Sun Coast trans, SC 1057 & Transgo JR by MikeL, true downpipe, Banks Ram-Air SD sleeves 12.50 @ 107.51


Big Blue04 GMC LLY 3500 SRW CC LB 4x4 DA Big Blue 13.12 @ 103.93 466RWHP/928TQ. PPE LLY extreme tune, VA Box, SC III by Inglewood Trans, 4" straight pipe, Super Diesel Tie Rod supports and Manifold, Trippin Pickup, Cognito Braces, FuzzyDice.

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Old 12-20-2010, 10:48 PM
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Yes, there is a fuel temp sensor on driver's side mounted in fuel the return line. There are parameters to defuel the truck if the temperature gets too high.
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Old 12-20-2010, 10:49 PM
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Originally Posted by Kat View Post
How about those Mets?


Glad you saw it Kat. Seemed a little suspicious to me, especially with the link in the sig.
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Old 12-20-2010, 10:50 PM
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Quote:
Originally Posted by mikewayne View Post
I don't think any fuel temperature sensor need for any truck as in liquid state its always going to work and it works normally.... I don't think any ride comes with fuel temperature sensor.... other than big money cars if you want get a sensor attached.... no big deal in that!!!
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Old 12-20-2010, 10:51 PM
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Glad you saw it Kat. Seemed a little suspicious to me, especially with the link in the sig.
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Originally Posted by JD4440 View Post
I had a little help
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Blue Meanie 02 Z06 11.36 @ 120.67 448 rwhp/411 tq AFR H/C

Wendy 06 GMC LBZ CC/SB EFI "Rat Posion", Sun Coast trans, SC 1057 & Transgo JR by MikeL, true downpipe, Banks Ram-Air SD sleeves 12.50 @ 107.51


Big Blue04 GMC LLY 3500 SRW CC LB 4x4 DA Big Blue 13.12 @ 103.93 466RWHP/928TQ. PPE LLY extreme tune, VA Box, SC III by Inglewood Trans, 4" straight pipe, Super Diesel Tie Rod supports and Manifold, Trippin Pickup, Cognito Braces, FuzzyDice.

McRat's toy-2005 GMC "Casper 2" 2500HD 4wd Xcab SB Mike L. LLY 2 trans, McRat tuning 10.59 @ 128.9


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  #9  
Old 12-20-2010, 10:54 PM
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Politicians are the only people in the world who create problems and then campaign against them.
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