the first 2 pics i see is showing fuel feed line from the fuel blow housing and the other line is return line that the one on the right
the 3rd pic is return line from the driver side injectors

all most look like they took off the water drain T-Valve you going have try see down at bottom of the fuel blow and see if they don't one port plug off or see where they run the line too something just not right there

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hey i also seen the PMD on the side of the pump is the one you running off of

I guess I am running off that little black box there'
Yea it doesnt mach up with the book at all but it still looks "Factory" I don't think the LP is running. I release the top of the filter and don't get any flow of fuel even when i crank the engine.

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I would think there is some way to drain the water and junk from the bottom of the filter
I will crawl around with a mirror and see what i can find.
thanks for the help.
first day above 20 just been too cold to check things out.

take 12v right to LP and see if it pump fuel if it does most likey you have bad OPS run the LP on your truck and if it is bad OPS make sure you put only ACDelco in any other brand won't last you 6 months

Thanks will give it a try.

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Where is that OPS the pump is good

here are part #er you should just go with ACDelco and you going want pull the bolts out fuel housing so move to the side gave more room and you will need 12pt socket remove and install


Oil Pressure Sensor:

* OEM: 12555492
* ACDelco: D1808A
* Car Quest: PS262

injector pamp i have a 93 that had the same thag hapin to it

That is the OPS top back of the engine down under everything??

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That switch looks like a P I A. I may just build a circuit to run the pump without the switch.
if it ever fails again I will for sure.

yes

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i post you mod by pass if you want it

Give it to me.. I may can make it better, In my other life i am a electrical control engineer Retired.
Just have to find a good source for switch on power.

OPS and LP Mod
 

The first pic is of the OPS location. The second pic is of the OPS plug and the wire colors. The third pic is of the items I used to do the project. The fourth pic is of the wires cut and crimped.

The length of the extension wires were 24“, I removed the convoluted tubing from the OPS wires before I started cutting. my wire colors for the relay extension were :

Orange for the hot: I cut the orange wire from the OPS plug about 3” from the plug and tied in the orange extension wire. Crimped and shrink wrapped it.

Gray for the OPS plug: approximately 2.5” from the plug I cut the gray wire. The wire from the OPS plug I connected the gray extension wire. Crimped and shrink wrapped.

Light purple for the LP: on the cut wire going to the LP I connected the Purple wire. Crimped and shrink wrapped.

Brown for the ground: The brown ground wire is much shorter because it is just ran to the relay’s mounting screw.

My pics don’t show the shrink wrap installed on the wires (I thought I had took one but this was the time the grandson decided to interrupt me). The fifth pic is of the wires from the OPS re-loomed and the relay wires Loomed. I decided to mount the relay under the electric shroud pic # 6 on the passenger’s firewall pic # 7 . It seemed to be the most likely place to put it. Being that the factory saw fit to have already put holes there and the other relays were there as well. I mounted the ground with the same screw I mounted the relay with. Then replaced the shroud.

The relay is numbered and the extension wires hook to the relay in this order. #30 is the orange power wire (by the way this wire is hot with key off don’t let it ground out. Please don‘t ask how I know). #85 is the brown ground wire, #86 is the gray wire from the OPS and #87 is the purple wire to the LP.

The bosh relay number is 0-332-209-161.