1991 S-10 Blazer Rpo Codes

[boisesean]

I have a 1991 S-10 Blazer 4x4, 2 Dr. Vin Code 1GNCT18Z3M8248111. I need to replace the wax pellet actuator in the air cleaner and need to know or want to know what the Option codes determine. I have code (opt CTF). What is this code indicating(besides interim design change). I found that this vehicle came with 3 options:

>with off road air cleaner(opt 9K3)

>without off road air cleaner interim design change(opt CTF)-mine

>without off road air cleaner without interim design change.

Does anyone have any tech info with pictures of the 3 options or know where to get and if I can get a new part instead of having to purchase used from a wrecking yard-which I will have no idea if the condition of the part is working or not when purchasing. Any info would greatly be appreciated. Mine will actuate when heated with a torch but not when heated with a heat gun. So it does actuate but not at the 130 F like the manuals indicate.

Thanks-Sean

[txab]

So you've already tried local parts stores?

 

I find an "air charge temp sensor" and an "air or thermal temp sensor". These are available new at parts stores.

 

Is this part you need?

 

[boisesean]

Thanks for responding but that's not the part. I wish it was the vacuum switch, but I have the other one. See attached pic and here's a link to pics in the manual of this and the actual air cleaner. It opens to fuel system. Just go Drivability and Emission Controls, then goto Engine Emission Controls, and then finally Thermostatic Air Cleaner.

http://arrc.epnet.com/autoapp/9110/9110.ht...H05_TESTIN2.htm

[txab]

I doubted that I pictured what you were looking for. My SM info doesn't go back as far as your vehicle.

 

You might PM MS3DALE, give him your VIN and see what he comes up with. He's in parts at a GM dealer