How have you guys done this? Has anyone been able to install one while still having the stock gauge work?

 

This part is on the the top rear of the motor.
See where the arrow points? That's flat & closed off on a stocker.
Drill and tap a hole there and install the fitting as shown in this pic.

 

Damn its tight back there. Can you get the whole assembly off with the plenum on? Luckily I have a spare I can use.

 

Pretty sure you need to pull the upper plenum off, maybe not...try it.

I did mine during one of the many many many many Head Gasket & Engine failures I've had with the 3.slow while the POS was in pieces.

 

I installed mine pretty easily. I bought the guage and sender combo from Sunpro, and had to get the metric adapter set.

Mine took the place of the sender next to the blue fitting--a 2 prong fitting was replaced



With a little patience, deep sockets, and teflon tape it all went together.

I dont have any pics of the sender, but here is the guage...

 

That one that you replaced is the cold start sensor didn't you have trouble with high idle afterwards?

On the 89 the setup back there is a little different. There is no empty tower to drill out. What is the blue piece with the vaccuum lines attached to it? There has to be a way to do this.

What about on the front of the engine where that little housing is, the one where the hot coolant comes out of the engine and goes into the rad? Would that be a silly place for it since there is air coming off the rad and hitting it?

 

What is the blue peice that the vaccuum lines go to???

 

Like marc showed, take out the one with one prong, this is the one that runs the gauge on your dash. Get a sunpro gauge, a metric adaptor, and some teflon tape you'll be good to go.

 

x2 as i did the exact same thing a few months ago, it was a bit hard finding the right adaptor tho..and i had to drill the middle of it out to make the sender fit properly but it works great!

 

I wanted to keep the stock gauge working so this is what I did. It works great it also gives me a reading on the temp of the coolant at its hottest.





My current question is what is the blue thing that the vaccuum lines attach to????

 

What have you guys been running for temp readings?

 

Currently I'm all over the map but it should be 180-195IIRC.

 

I am usually running between 190 and 220...this past weekend on a long hot hill climb it went a little past 220, but not up to 250