$180.00! 
Oil pressure sending unit location ??
Racer
Joined: Nov 1999
Posts: 434
Likes: 0
From: Plaistow NH
It's on the back of the motor. just about dead center. Between the manifold and the firewall.. it's about the size of.... Ummm I dunno a little smaller then a tiny paper cup.. it's silver and has a wire coming right out the top.
Bill
Bill
Le Mans Master
Joined: Mar 1999
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From: Fort Worth Texas
2024 Corvette of the Year Finalist - Unmodified
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Former Moderator
Cruise-In I-II-III Veteran
Originally Posted by Sarkee:
[B
[B
...Uh, that's *windshield wiper* motor... 
...There's two back there - one for the idiot light; one for the digital dash readout...
...They'll both leak like hell if you let 'em...
[/B][/color]
...There's two back there - one for the idiot light; one for the digital dash readout...
...They'll both leak like hell if you let 'em...
[/B][/color]
Actually, one is for the digital dash readout and the other is for the FUEL PUMP RELAY. If the oil pressure gets below a few pounds, the fuel pump loses power.
They say a picture is worth a thousand words:
[img]http]//www.corvetteforum.net/c4/marcho/images/Oil_pres.jpg[/img]
Hope this helps you out!
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Verdad Gallardo
Le Mans Master
Joined: Jan 2001
Posts: 8,169
Likes: 1
From: Knoxville,TN TN
St. Jude Donor '03
I replaced my L98 sending unit last Sat 21 Jul and it took about 1 hr, that is taking out wiper motor and wires from distributor,other then that it was a piece of cake, good luck, oh I did use a medium sized channel lock pliers to unscrew and put back in,
Pro
Joined: Nov 2000
Posts: 694
Likes: 0
From: Guam
Originally Posted by Sarkee:
[B
[B
...Uh, that's *windshield wiper* motor... [img]http]//www.corvetteforum.cc/ubb/biggrin.gif[/img]
...There's two back there - one for the idiot light; one for the digital dash readout...
...They'll both leak like hell if you let 'em...
[/B][/color]
...There's two back there - one for the idiot light; one for the digital dash readout...
...They'll both leak like hell if you let 'em...
[/B][/color]
Intermediate
Joined: Aug 2019
Posts: 44
Likes: 3
Almost 19 years later..
Reviving one of the oldest threads I've seen to ask a question.
This area of my car caught on fire the other day. The "fuel pump relay sensor" is melted and unusable. It took me a long time just to find this thread where someone correctly identified this item in the first place. Other threads were saying it was a temperature sensor. I even found an LS swap thread that referred to it as a temp sensor.
What is the correct name or part number for this "fuel pump relay sensor" and where do I get one? Is it just a temp sensor being used to trigger the fuel pump relay? Tell me it isn't this very expensive sensor.
What is the correct name or part number for this "fuel pump relay sensor" and where do I get one? Is it just a temp sensor being used to trigger the fuel pump relay? Tell me it isn't this very expensive sensor.
Last edited by Dake; May 21, 2020 at 02:40 PM.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Sensor
It is an oil pressure SWITCH.
the body of the switch is grounded, and when the oil pressure builds a few pounds, the switch makes, and provides a ground for the fuel pump incase the Fuel pump relay fails.
that way, the fuel pump has a second path to energize, keeping you from being stranded
the body of the switch is grounded, and when the oil pressure builds a few pounds, the switch makes, and provides a ground for the fuel pump incase the Fuel pump relay fails.
that way, the fuel pump has a second path to energize, keeping you from being stranded
Drifting
Joined: Jun 2018
Posts: 1,402
Likes: 287
From: Brisbane Australia
C4 of Year Finalist (performance mods) 2019
You can get the switch and the sender from RockAuto
https://www.rockauto.com/en/catalog/...+/+switch,4588
https://www.rockauto.com/en/catalog/...+/+switch,4588
