Results 1 to 6 of 6

Thread: Specs for temperature sensor?

  1. #1

    Default Specs for temperature sensor?

    Hi Holley (& Danny). I purchased the Holley Terminator Kit about a year ago that included pretty much everything I needed including a coolant temperature sensor. I'm in the process of building custom digital gauges and I need to understand the specs of the coolant sensor. I assume it's 5V, but would like to confirm. What is the voltage range? (.5V - 4.5V), what is the temp range (0°F - 300°F) and is it linear in the way it reads? I would be grateful for any help on this topic. For anyone that is interested, I'm building an Arduino based temp gauge (as well as a few other gauges) on a 4D Systems display. The plan is to integrate them into the existing 50 year old dashboard. Thanks. Charles

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,018

    Default

    Quote Originally Posted by chuckb1300 View Post
    I assume it's 5V, but would like to confirm. What is the voltage range? (.5V - 4.5V), what is the temp range (0°F - 300°F) and is it linear in the way it reads?
    No, it's a thermistor. See page 2: http://pe-ltd.com/assets/coolant_temp.pdf (Coolant Temperature Sensor Calibration Data, -40°C/°F - 150°C/302°F & Ohms)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

    Default

    Thank you Danny.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,018

    Default

    You're welcome.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  5. #5

    Default

    Hi Danny. I've learned that for most temperature circuits based on a thermistor, they are based on a voltage divider circuit which I presume is within the ECU. Most of the schematics I've seen require knowledge of the fixed resistance within the voltage divider circuit. Can you tell me what this is suppose to be for the Holley Terminator HP ECU? I had assumed it was a 100K Ohm, but I'm not sure that's accurate. Thanks, Charles

  6. #6
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,018

    Default

    Quote Originally Posted by chuckb1300 View Post
    I've learned that for most temperature circuits based on a thermistor, they are based on a voltage divider circuit which I presume is within the ECU.
    Yes, that hardware is in the ECU.

    Most of the schematics I've seen require knowledge of the fixed resistance within the voltage divider circuit. Can you tell me what this is suppose to be for the Holley Terminator HP ECU? I had assumed it was a 100K Ohm, but I'm not sure that's accurate.
    Contact Holley Tech Service (LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us