![]() |
|
![]() |
#1 |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Temp sender question
Does anyone know the resistance/ohms of our temp senders?
The reason I ask is I am swapping an LS engine in and am looking for a temp sender that might screw into the LS head without an adapter that would work with our factory gauges that I am keeping (for now) I know some of you smart guys have a good answer' |
![]() |
![]() |
![]() |
#2 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
|
Re: Temp sender question
ttt for you.
I looked through my mnauals and couldn't find the answer to that one. Probably would be just as easy to buy one and take a reading off of it. Local auto parts store has them for about $5. Or ask them to take a resistance reading on one for you. If you do a lot of business with a local parts store they usually will try to help you if they're not super busy. |
![]() |
![]() |
![]() |
#3 | |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Re: Temp sender question
Quote:
![]() I also think the ohm reading is at like 160-200 degrees so reading them cold won't help. The answer is out there and when I find it I will help others and tell them!! Thanks BTW Last edited by Thealien; 12-17-2009 at 08:17 PM. |
|
![]() |
![]() |
![]() |
#4 |
member #16
![]() Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
|
Re: Temp sender question
Heres a link to cutting a 1/2 npt down to 3/8 npt to keep from using a bell reducer adapter. Also some of the trucks have put them in the intake manifold.
There has been more posts on cutting them down, I just haven't found them. http://67-72chevytrucks.com/vboard/s...d.php?t=196755
__________________
john http://67-72chevytrucks.com/vboard/showgroups.php board vendors ![]() http://www.flickr.com/photos/1745471...7602865984234/ |
![]() |
![]() |
![]() |
#5 | |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Re: Temp sender question
Quote:
No putting them in the intake of the LS engines, they are plastic with no coolant running through them. |
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
|
Re: Temp sender question
Most aftermarket guages use a range of 33 to 240 for all the gauges. Many OEMs are a different range. Not sure what the range is for the factory truck sender but it would not surprise me if it is the same range as the factory LS temp sender.
|
![]() |
![]() |
![]() |
#7 |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Re: Temp sender question
I sure whish that was the case but the LS temp sender is wired to the PCM instead of the gauge. If it were that easy (I really hope/wish it was) I think the few places doing the swaps would be using just a sensor instead of using all the adapters. On LS1tech there is a guy that had his turned down and threaded 12 X 1.5 mm that the thread for the sensor is but his was a newer engine with a smaller sender. The smallest part of my sending unit is 13mm+ which is bigger than the 12 mm hole.
|
![]() |
![]() |
![]() |
#8 | |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
|
Re: Temp sender question
Quote:
|
|
![]() |
![]() |
![]() |
#9 | |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Re: Temp sender question
Quote:
The guy turning them down to 3/8ths hasn't been on in over a year? |
|
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
|
Re: Temp sender question
Drill and tap the head for the larger sender. Its been done by members on LS1 tech.com. Also, on my 96 Blazer I used an older model f-body sensor that hooked up and worked on my guage. Can't remember what year it was for but I got the idea off ls1tech.com also. Both ideas were for the passwenger side head, leaving the sensor for the computer in the drivers side head. Good luck. JIM
|
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
|
Re: Temp sender question
Check this site. It's a little hard to find but they have NPT adapters from 12mm to 1/8-1/4-3/8, or 1/2-inch NPT There is also an article on a 5.3 swap into a truck. I know you didn't want to use an adapter. I would call them and see what they say. Seems that they have done several of the swaps.
http://www.hotrodlane.cc
__________________
72 Cheyenne Super 1/2 LWB White/Dark Yellow 07 Avalanche 2LT 74 Sleek Craft Rebel Jet Boat W/Pontiac 400 Last edited by OhOneWS6; 12-18-2009 at 01:24 PM. |
![]() |
![]() |
![]() |
#12 | |
Senior Member
Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,125
|
Re: Temp sender question
Quote:
|
|
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
|
Re: Temp sender question
Try the 98 LS1 temp sensor. You'll use only the guage pins on it. The other pin goes to the pcm. I tried to get a pic of mine like i said on LS1 tech, but the thing is so tightly packed in my s10 Blazer it was a no go. The sensor fits in the passenger head without adapters. It is most likely same resistance as you're original sensor. Good luck. Jim
|
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
|
Re: Temp sender question
This is for a 99 Ls1 Camaro.http://cpwstore.carpartswholesale.co...DETS10076.html
|
![]() |
![]() |
![]() |
#15 |
Senior Member
![]() Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,951
|
Re: Temp sender question
You can change the calibration of the gauge by changing the resistor on the back. I did this on mine because my 454 tends to run around 200 and that was in the red on my factory calibrated gauge. I think the original resistor is 66 ohms and I changed to a 75 ohm resistor. It put the needle in the middle at 195, where my stat opens. That was 2 years ago and i didn't write down my test values, DOH.
I used my laptop to read the temp value in my ECU and hooked in a variable resistor to the gauge to 'set' it where I wanted it. Then it was just a matter of installing the right ohm value resistor on the back of the gauge. I bet this would work for your LSx, or any temp sender for that matter.
__________________
ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
|
Re: Temp sender question
Sorry, i used the 99 Fbody temp sensor, not 98. Jim
|
![]() |
![]() |
![]() |
Bookmarks |
|
|