cgmiller83

You've some options. 1: Send the cluster off to get fixed. Takes about 1 week to get fixed and back to you from most places. 2: Buy the stepper inside the cluster and try and fix it yourself. 3: Buy replacement cluster with the closest mileage to match your truck. Note: The cluster and the ECM both store the mileage. If you replace the cluster and don't get the cluster reset to match the mileage it could be a problem down the road. That's if you try to sell the truck. I'm waiting until it get warmer outside for myself to fix mine. The temp gauge is doing the same things your oil gauge is doing. I will more than likely buy the stepper motor to fix mine. The only place I've found the motor at a good price is on Ebay. eBay item number: 331131860991. That seller will also fix your cluster for you, $99.

joinerboy

So can i put a lariat cluster in my xl?

djfllmn

iTrader: (1)

you could but the message center wont work

Gray Ghost03

Hey dude my truck is doing the same thing did you ever figure it out??

jamie930

The oil pressure gauge is a dummy gauge. Its really just a pressure switch on/off type. On the gauge reads in the middle.

Why not just install a real oil pressure gauge?

Then just pop the needle off the gauge in the cluster

Mod (Ret.)

Have you tried unplugging the wire at the engine oil pressure sensor?

With this wire unplugged, the guage needle should be below the "L" with the key at the "on" position. Then ground this wire, and it should peg at the "H" position (again, with key at "on" position). If this test passes, the wiring and gauge are good, and the sensor is bad. If no change, the guage or wiring is faulty.

fatedstranger

Sorry to hijack this thread, I stumbled across this when trying to find the answer to a related question.

I want to hook up an oil pressure tester to check oil pressure but I'm unsure what will happen when I remove the oil pressure switch to connect the tester. I assume the PCM will think there is no engine oil pressure and shut down or something.

@Bucko, it sounds like you know a little bit about how this switch works. Do you know how I can trick the PCM into thinking the switch is still there? From your post, it sounds like it could be a simple as grounding the switch wire.

fatedstranger

I may have figured this out so I'm posting here in case it helps someone else out in the future.

I found an interesting video that shows how an EOP switch works and after looking at the wiring diagrams it looks like its just a simple switch. The switch is normally open and closes when there is oil pressure. It just has one wire which is ground. Disconnecting the wire from the EOP switch and connecting it directly to ground should trick the PCM into thinking there is normal oil pressure, the gauge should read as normal as well. I haven't tested this yet but I'm confident it will work.

Edit: I had a chance to try this today and you can bypass the EOP switch by grounding the one wire that comes off the switch. With the wire grounded the oil pressure gauge sits exactly where it normally does. However, while I was testing this, I disconnected the wire and the truck started and ran just fine. The oil pressure gauge was at zero and I received a warning to "CHECK GAUGES", other than that the truck operated normally. I was led to believe that these trucks had a failsafe and that they would not start if there was no oil pressure, this does not seem to be that case.