Hi speed

[smed7880]

Hey, the Hi speed on my a/c fan went out. The other 3 speeds work. Any ideas what went wrong? Same thing happened with my '78.

Thanks!

 

[JBreu]

I'm assuming it's the same with your heat as well.........No worries, easy fix...just get a new relay is all.....I had the same issue a while back with my grand am.....only the first two speeds were shot...the 3rd and 4th still worked though...either way, not that hard of a fix 🙂

 

[RITTER]

It could also be the blower motor resistor

 

[Mudweizer]

Check the connector coming from the engine harness, the red wire is most likely messed up in the connector. Happens all the time.

 

[smed7880]

Thanks alot for the advice, guys. I'll check all 3 & let you know what the issue wound up being.

BTW, this happened to my '78 years ago, too. I've heard this is a common problem.

 

[Longroof79]

I'll go with what Mudweiser says. Very easy fix. Contacts usually get alittle tarnished. Some light grit sandpaper to burnish the contacts and in most cases, you're good to go.

 

[smed7880]

Haven't quite fiddled with high speed yet, but thought the compressor went out until Tony found that one of the harness plugs was loose. Works like a charm now! Got to drive it today. Aahhhhh, how nice it was.