C4 Corvette Sensor Information

C4 Corvette Sensor

Sensor Values and Location

C4 Corvette Sensor Coolant Temperature 

P/N 25036708

  • 185 Ohms @ 210F, 3400 Ohms @ 68F, 7,500 Ohms @ 39 F.  Front of engine, below Throttle Body 
  • 1985-91 Located Under Plenum
  • 1992-96 Located In Water Pump

Engine Oil Temperature Sensor

  • 185 Ohms @ 210 F, 3400 Ohms @ 68 F, 7,500 Ohms @39 F.  Left rear of engine, just above the oil filter

Oil Pressure Sender/Switch

  • 1 Ohms @ 0 PSI, 43 Ohms @ 30 PSI, 86 Ohms @ 60 PSI.  Top, left hand rear of engine

Fuel Quantity Sender C4 Corvette Sensor

  • 0 Ohms @ Empty, 45 Ohms @ 1/2 Full, 90 Ohms @ Full.  Top of fuel tank, beneath filler pipe escutcheon (shield) panel.

MAT (Manifold Absolute Temperature Sensor)

  • 185 Ohms @ 210 F, 3400 Ohms @ 70 F, 15,000 Ohms @ 40 F.  Underside of manifold air plenum at rear.

Outside Temperature Sensor

  • 4400 Ohms @ 60 F, 2200 Ohms @ 85 F.  Right side of engine, top right corner of radiator

In Car Temp Temperature Sensor

  • 4400 Ohms @ 60 F, 2200 Ohms @ 85 F.  Coupe: above left seat near interior courtesy light, Convertible: center of cargo compartment lid.

MAF (Mass Air Flow) Sensor

  • .4 Volts @ idle, 5 Volts @ Full Throttle.  Front of engine ahead of throttle body

Oxygen (O2) Sensor

  • .1 Volt Lean Mixture, .9 Volt Rich Mixture.  Left side of exhaust pipe near engine block

TPS (Throttle Position Sensor)

  • .54 Volts Idle, ~ 5 Volts Full Throttle.  Right side of throttle body at the front

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
Chris Trautman @ Corvette Assembly Plant 2019

About Us: Corvette Web Central | Owner Bio: Chris Trautman

Established in 2008 by Chris Trautman, Corvette Web Central quickly grew into one of the top leading Corvette enthusiast websites globally. 

"This website is a passion of mine, just as much as being a Corvette owner," says Chris.  He was frustrated trying to find information on the internet about Corvettes which was was not biased or influenced somehow. 

He has owned three Corvettes over the last twenty years and does not plan to stop owning one anytime soon.

Note: Some links on this page are part of our affiliate program and provide a small portion of proceeds to fund the administrative costs and to fund more product reviews.  We are not paid to perform the reviews or are we given any products for free.  

You might like these