Hello all....I'm a gray-haired newbie. I basically know how to tune up anything built before 1975. Anything later than that I have to seek help. I have a 95 accord 4cyl auto that idles around 2000 rpm after it is warm. Idles fine when cool. About 6 months ago I replaced the vacuum valve which is attached to the firewall and connects to the AIC via 2 vacuum lines (junk yard). It is activated by an electronic switch which is connected to I have no idea what. That fixed it... for six months. Now it is doing it again. Can someone tell me what this valve is called ( I want to get a new one), and clue me in as to what else besides 300k miles might be causing this thing to go bad? I can get another one at the yard, but if it's something else causing it, that would be redundant.

 

take a picture of what you replaced and post it here...you can use photobucket.com to host it

 

Okay, I finally learned that this is called a "Frequency Solenoid". Two part question: (1)Can this be repaired? (2) What causes it to fail? It's outrageously expensive for so small an item.

 

those things rarely, if ever, go bad....you need to look at the faq's section at the top of this subforum and find the "how to clean your fitv and iacv" threads and start there...

 

a good cleaning will usually go a long way and don't forget to clean your egr valve and the runner ports.

 

Thanks. Will do.