Which oil pressure sensor?

[vilant]

My oil pressure gauge is all over from 0-80psi. Looked through solutions and parts list and I'm confused as to which sensor controls the gauge on the instrument panel. Is it AC delco # D1846(single pin), which is located on the right side of engine underneath oil filter by oil cooler hoses? Or is it AC delco # D1808a(three pin), which is located right next to oil filter, accessible from top of engine? Bought the single pin sensor, but now I'm not sure if I bought the right one as the 3-pin sensor looks like it has a coating of oil on it. Any help would be appreciated:cheers:

[LGAFF]

gauge runs off the top one

[VetteMed]

The gauge receives its input from the larger black cylindrical sensor, mounted upright at the forward / RH edge of the oil filter housing.

The switch which activates the "check gauges" light on the dash cluster, is the shorter black cylindrical switch, low down on the RH side of the oil filter housing.

FYI, the oil temp sender is the third sender/sensor on the housing; this is a brass unit low down on the front of the housing.

Andrew

[scottfab]

http://www.ecklerscorvette.com/corvette-oil-pressure-sensor-lt5-1990-1995.html

[vilant]

Thanks, guys. Looks like I'll have a spare sensor, lol. At least the one I need to fix, is alot easier to get to.:cheers:

[mike100]

I need one also. Been putting it off.

[scottfab]

Some years ago my oil pressure sender leaked.
I repaired it and it has not leaked since.
http://www.zr1netregistry.com/ZR1_oilpressure.htm

[vilant]

Some years ago my oil pressure sender leaked.
I repaired it and it had not leaked since.
http://www.zr1netregistry.com/ZR1_oilpressure.htm
Thanks. You know I saw your post somewhere before, but then I couldn't find it again. I found the whole assembly on ebay, new with shipping for $26.47
http://www.ebay.com/itm/ACDelco-D1808A-Oil-Pressure-Switch-/230803073441?pt=Motors_Car_Truck_Parts_Accessories&hash=item35bcef69a1&vxp=mtr
I'll more than likely damage the sensor, but once I replace it w/ a one I'll try to repair the old one, that way I'll have a spare. You should have a free lifetime membership for the amount of useful information you but in here:cheers:.

[PhillipsLT5]

http://jerrysgaskets.com/store2/root/
Jerry also has what you need
Replaced all 3 since I had it apart

[vilant]

http://jerrysgaskets.com/store2/root/
Jerry also has what you need
Replaced all 3 since I had it apart
Thanks, but I already bought it from ebay, but I'll buy what I need to repair the old one from Jerry. I searched for the Neihoff DR4010, and nothing came up though. He didn't have AC Delco D1808a either, unless I'm navigating wrong, I used his search for both products and no matches came up. :cry:

[scottfab]

Thanks. You know I saw your post somewhere before, but then I couldn't find it again. I found the whole assembly on ebay, new with shipping for $26.47
http://www.ebay.com/itm/ACDelco-D1808A-Oil-Pressure-Switch-/230803073441?pt=Motors_Car_Truck_Parts_Accessories&hash=item35bcef69a1&vxp=mtr
I'll more than likely damage the sensor, but once I replace it w/ a one I'll try to repair the old one, that way I'll have a spare. You should have a free lifetime membership for the amount of useful information you but in here:cheers:.

Well as the write-up says, I really didn't set out to fix the old one. It's the engineering background I have that made me curious about the failure/leakage. Then when I discovered how easy it was to fix ..... one thing lead to another and I just had to know if the fix worked :razz:

[GSJoe]

Don't fret over this part. It's used on lots of other GM cars. I accidentally broke mine the other day while changing my serpentine belt and discovered that my local Advance Auto Parts store (and also AutoZone) had these senders in stock for a bit over $25. I bought one, put it in, and all is fine again.

[VetteMed]

Don't fret over this part. It's used on lots of other GM cars. I accidentally broke mine the other day while changing my serpentine belt and discovered that my local Advance Auto Parts store (and also AutoZone) had these senders in stock for a bit over $25. I bought one, put it in, and all is fine again.

Yep, I agree. One of those things that doesn't warrant too much over-thinking :-D

[vilant]

Installed the new sensor yesterday. Worked like a charm. I'll have to see what the normal operating range is. It's in the 70 range to start, but then backs off after a few minutes.

[VetteMed]

Installed the new sensor yesterday. Worked like a charm. I'll have to see what the normal operating range is. It's in the 70 range to start, but then backs off after a few minutes.

Typically the pressure will be higher when the oil is cold, in any motor.

I've found that aftermarket senders may not jive 100% with the calibration of OEM senders, but since we're talking about relatively inaccurate OEM gauges here, it's really not a significant difference. The main thing is to know what's "normal" for that particular sender.

[vilant]

Typically the pressure will be higher when the oil is cold, in any motor.

I've found that aftermarket senders may not jive 100% with the calibration of OEM senders, but since we're talking about relatively inaccurate OEM gauges here, it's really not a significant difference. The main thing is to know what's "normal" for that particular sender.
Makes sense, thanks. I'm not gonna worry about then, unless it pegs or barely goes past 0. It's just nice to see that it's not fluttering around anymore. Was always catching my eye.:cheers: