cannot find oil pressure sending unit...

pvtjoker · 10-28-2007, 06:28 PM

i'm wanting to replace my oil pressure sending unit...i cannot find it's location on my truck...i have a 92 GMC 1500 4x4 p/u w/ a 305 v8...

thank you

scavanger · 10-28-2007, 07:54 PM

I think it should be next to the dist. just behind the intake. Drivers side of dist.

Scavanger

tjzz4 · 10-28-2007, 08:35 PM

Either there of right above the oil filter on the block

brutis · 11-03-2007, 09:26 PM

on a 454 it's on the drivers side right under the power sterring pump back a little on the block

chengny · 11-03-2007, 09:49 PM

There is a little Christmas Tree arrangement behind/under the distributor. It taps the oil system at the top of the block. A simple 1/8" NPT tee/nipple combo. If you have an actual oil pressure gauge on your dash, there will be a diaphram actuated rheostat with one electrical lead attached (usually on the passenger side) to one side of the tee. The other side accepts a make/break switch (two leads)for an low lube oil prsssure warning light on the dash. Even if you have a gauge the other switch must be left in place. It is incorporated into the choke system.

Just pop the dist cap and unscrew the affected switch. Make it up with a tiny bit of teflon tape, and resist the urge to overtighten. It won't leak - even if it does, it is easier to go back and tighten further than replace a sheared pipe fitting (esp. the one in the block).

10-28-2007, 06:28 PM	#1
pvtjoker Junior Member Join Date: Oct 2007 Posts: 1	cannot find oil pressure sending unit... i'm wanting to replace my oil pressure sending unit...i cannot find it's location on my truck...i have a 92 GMC 1500 4x4 p/u w/ a 305 v8... thank you

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10-28-2007, 07:54 PM	#2
scavanger Senior Member Join Date: May 2007 Posts: 395	I think it should be next to the dist. just behind the intake. Drivers side of dist. Scavanger

10-28-2007, 08:35 PM	#3
tjzz4 Senior Member Join Date: Oct 2007 Posts: 316	Either there of right above the oil filter on the block

11-03-2007, 09:26 PM	#4
brutis Full Member Join Date: Oct 2007 Location: brooksville florida Posts: 40	on a 454 it's on the drivers side right under the power sterring pump back a little on the block

11-03-2007, 09:49 PM	#5
chengny Senior Member Join Date: Sep 2007 Location: So. NH Posts: 271	There is a little Christmas Tree arrangement behind/under the distributor. It taps the oil system at the top of the block. A simple 1/8" NPT tee/nipple combo. If you have an actual oil pressure gauge on your dash, there will be a diaphram actuated rheostat with one electrical lead attached (usually on the passenger side) to one side of the tee. The other side accepts a make/break switch (two leads)for an low lube oil prsssure warning light on the dash. Even if you have a gauge the other switch must be left in place. It is incorporated into the choke system. Just pop the dist cap and unscrew the affected switch. Make it up with a tiny bit of teflon tape, and resist the urge to overtighten. It won't leak - even if it does, it is easier to go back and tighten further than replace a sheared pipe fitting (esp. the one in the block).