Brew

This is second plug like that to melt. the first was on the original ac controller. I got a refurbished one & replaced both the plug & the blower motor. So I’m leaning towards resistor. I will try out the testing suggested first. To be continued...

Thanks

Update i have removed heater core. With dash in the car I got it out. Like many said in this thread it was a time consuming job. Just have to be patient & find all the connections, nuts etc. my core looks pretty good. I took it to a radiator place I trust to test it & see if it is good. If anyone knows where to get an OEM heater core new I’d like to know about it. these aluminum ones worry me, a lot. anyway, thanks for all the help. now I wait to try & put it back in! Another update: The Parts Place has brass/copper heater cores as of 7/21

I’ll show that to my wife. An ENGINEER! 🤣

I’m convinced that automotive engineers all live in houses without numbers & have unlisted phone numbers. 😡

I know what you mean!

This guy is a really good one. He is retired. In his 70’s. He used to build torpedoes for the navy. Designed & built electrical systems for them. He’s not a drawing room only type of engineer. Very hands on. But I know what you mean nevertheless

I’m not much of an electrician but I’ll try to do that stuff. Thank you for the suggestions.

An electrical engineer I know just told me it is unlikely that corroded resistor caused the melting plug. I guess we will see

My 70 has one of these like MC1of80 described. Maybe replace or install one if you don’t got. it is vacuum controlled so your cabin air conditioning controller would have to have that line / function. Again, MC covered that. just thought you might need a picture

That’s interesting because That may be it. I replaced blower motor resistor & it was pure rust. I have not run the ac again since but ran blower to test because I replaced it. I am going to separate this connector into 2 individual spade connections & test it out. I’ll start on that as soon as my heater coil is back in. Did I mention I hate cars? 😁

Anyone else have this issue? I think it is the control for the blower motor. I can replace it but wondered if anyone knows why it’s doing that? It was like that when I bought the car and I replaced it before so this is second time it has done that. I see no contact with any other spade on back of controller.

Agree with Mc180 ground or unit bad

The lower fender patch OPGI sells is a piece of galvanized crap imo.

I want to convert my rear brakes but probably need a whole new rear end. the money pit has reached its limit for this year. ☹️ Good info in this thread. Thanks

Good catch! I missed that. Wow. I’ve never seen or heard of that in a Monte. Cool!

True. But I saw the term used for both. Either way it got me to the part for sale. Have a good day

eBay has them I believe. I ordered a pair. I will report back if they are correct https://www.ebay.com/itm/C3-Corvette-Pillar-Post-Weatherstrip-Inner-Clips-1969-1982-x2416-/191736698948?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

It’s called a BLOWOUT CLIP (by some people) it’s also called A Pillar Post Weatherstrip Inner Clip

I THINK I FOUND THEM! But they look taller than mine in that pic. https://shop.docrebuild.com/1969-1982CorvetteWindshieldPostWeatherstripRetainerReproOfGM7657090.aspx

Those big headrests seem GM to me though. Idk for sure

Try doing it in the rain on a tarmac in high winds at night. Good times. 🤣

I can try to make some if there is demand for them. ill mess with it next time I’m metal working

Good looking ride!