94 Landcruiser Oil Pressure Gauge

[mearsjudah]

I recently bought an 80 series landcruiser. When I bought it the owner had told me the oil pressure sender needed replacing. (Hes pretty mechanically inclined and trustworthy, friends with my dad) I just replaced it and the oil pressure gauge still isnt working. When I replaced it I wrapped the threads in teflon except for the first 1. There are still 2-3 threads sticking out but i read to hand tighten and then do a half rotation with a wrench. Also the one i pulled out had about 2-3 threads showing.

Curious what I should do next.
Ive thought of getting an aftermarket gauge but im not sure how hard that is to do.

I really don’t want to pull the cluster out because everything inside feels really fragile and i’m worried i’ll break something

Ive also seen people say they go without one and just make sure they have oil in the car. I would just check it manually with a mechanic gauge to make sure I actually have pressure

I’ve driven it about 200 miles and it runs really well but kind of worried since this didn’t fix it.

 

[voodu3]

I’d check the wires and the plug going into the sender. There is a lot of heat on that side. My guess would be broken wire. If you haven’t already downloaded the FSM from the resources section. It has a ton of great troubleshooting steps.

https://forum.ih8mud.com/resources/1993-1994-fzj-80-updated-and-combined-fsm.124/

 

[Kernal]

Another thread on a similar topic:

Post in thread 'No Oil Pressure After Oil Pump O Ring and Front Crankshaft Seal Replacement'

May 30, 2026

Thanks @Kernal for that explanation, might make sense for me to wire that up afterall

• togles

• 

 

[mearsjudah]

Another thread on a similar topic:

Post in thread 'No Oil Pressure After Oil Pump O Ring and Front Crankshaft Seal Replacement'

May 30, 2026

Thanks @Kernal for that explanation, might make sense for me to wire that up afterall

• togles

• 

Thank you there are a few wires that look pretty rough in mine and this might be one of them. I will look at it and replace if needed then update after if it fixed it

 

[petegangies]

Thank you there are a few wires that look pretty rough in mine and this might be one of them. I will look at it and replace if needed then update after if it fixed it

it was still worth replacing the sender anyway. They're not too expensive and dont last forever. At least you know it's done now.

 

[mearsjudah]

UPDATE:
I ended up replacing the factory oil pressure sender with an aftermarket sensor and gauge. Just used a brass adapter with some teflon tape and plugged it into the factory spot. Wired it up to the dash and have an extra gauge sitting on my dash now that reads accurately. If my Factory gauge was working I would've used a T fitting to keep that gauge.

 

[CrabCake]

And hopefully accurately means that all is good and you have the proper pressure!

I feel you on having accurate gauges, I actually have 3 temp gauges on mine because I'm so phobic about overheating...original dash (which really does nothing much), a ZF reader that shows the actual temps on my tablet, and a Koso that I plumbed into the upper rad pipe by the alternator. Interestingly enough, the ZF reads the sensor that feeds the ECU (on the block) and always reads 5-8 degrees cooler than the Koso...I think they are both accurate based on where they are reading from. I did the Koso last because I don't always want to sync up the tablet to check temps...the Koso is aways on and easy to read.

Congrats on your purchase and know that there's always solid info/advice here on this forum!