Ihave a 86 4runner with a cluster that has a tach the oil gauge not working and the temp gauge is weird cause when my car is cold I turn the key on the needle is on normal position like if the truck was warm already i unpluged the temp sensor from the termosthat and no diference what can ido to make it work right this is my daily driver

 

Did the cluster with the tach come in the 4runner, or did you swap out the regular cluster for the one with the tach?

 

I bought like that

 

the '86 & '87 SR5 gauge clusters were known for screwy operation.
I had the same problem with mine. it would just bounce all over the place. imagine my reaction the first time I saw it peg out out of the blue! I installed an aftermarket one.

you can get one of Jeff Moskovitz's gauge cluster pillars to install it in. These look pretty cool.

I ordered the Auto Meter temp gauge from Summit Racing
Here are a few 2 1/16" ones to pick from. Comes with the sender. Pretty easy to install. Just threads into one of the plugged ports on the stock manifold.

The gauge I bought came with both green and red sleeves to match dash lighting.

Here's mine with my A/F meter in it and my Auto Meter temp gauge below.

 

Hey,
i have this problem also.
As a disclaimer, I'm a newbie.
Wondering if you fixed this and how. Maybe any tips for my job.
I was also thinking aftermarket gauge. How did you mount yours if you used one?