I installed a Griffiths serpentine evaporator about 2 years ago in my ‘96 993. Since that time I’ve had a problem with the evaporator freezing up which, with the help of this forum, have traced to bad evaporator temperature sensor. I am now in the process of replacing the sensor and have pulled out the old one and see that I had put a bend in it for the serpentine evaporator installation. I vaguely remember this was in the installation instructions.

It's obvious to me that I broke the temp sensor when I did this bend 2 years ago and I don’t want to do the same thing again. So, my question is there a safe way of putting this bend in the sensor element without endangering the sensor itself? Obviously and in hindsight the element will need a nice smooth bend with no buckles.

If anyone has any suggestions here, it would be greatly appreciated.

 

I'm assuming the sensor element is the copper tube type? If so I've had success bending those by wrapping the element around a cylindrical shaped object like a wooden dowel, screwdriver handle, piece of stout hydraulic hose, etc....The key is taking the time to accomplish gradual shaping and avoid kinking the element....If the bend required is a 90 degree bend, that will be pretty difficult to accomplish without kinking the element.

 

The material could be a plated copper tube. Anyway, thanks much for the advise, I'll try this.

Thanks again.

 

How do you remove the evap temp sensor? I recalled an article somewhere with pics on how to do this, but I can't find it.

--anthony

 

Here is the very helpful DIY that was previously posted on the forum. You'll find it a few pages inside the document.

http://ozarkpca.org/docs/injectors/2009_03.pdf

Sorry, it's not showing up as a hyperlink, so you'll have to copy and paste in your web browser.

 

Lane,

That's the exact article I am looking for. Thanks!!!

 

When I installed my Kuehl evaporator recently, I was a little concerned about the fit of the temp probe as well. Even with the prescribed bend, I could not get the probe to insert all the way flush with the airbox. I used a mirror and flashlight to see where the probe was entering the evap fins, but still hit resistence before the base was flush.

After several tries, I just used the sticky sealant that came with the core and sealed the airbox hole as best I could.

Here's hoping the probe's in the right place and I don't have freeze-up problems in the future!

 

Thanks for the help guys, this helps alot.