I am experiencing high idle. I have been checking the vacuum hoses for a leak with no luck yet. I noticed the AAR (Axillary Air Regulator) has a wire. Can anyone tell me where the wire originates from?

As usual, I really appreciate all your help. Yall are the best!

Terry

Engine harness, 12 pin connector on relay board, pin #12, white wire, constant switched power, 12 VDC.

Thank you so much the quick response.

Terry

To test for a leak, remove the hose from it to the aircleaner and block the hose with your finger. If the idle goes down, you've found your leak. If not, keep looking.

if the 12v has power but the AAR does not get hot just from being connected and on- the heating element inside is shot- but if it gets hot and after warm up it is still sucking air, there is your leak as stated by another here- it should completely close withing 5 minutes. they stick , and sometimes some penetrating oil- PBblaster etc will allow the valve to move again, .

pw

Okay, I am extremely confused. I blocked the hose with my finger and the idle immediately went down. Hot Dang, yall are awesome! After replacing several hoses, the idle was back up. In fact, I disconnected the hose going to the AAR and placed my finger over the mouth and nothing! Is the AAR fried?

I tried spraying some penetrating oil into the mouth of the AAR. Maybe the valve will free up?

Thank you in advance.

Terry

No. The aar is in essence a controled vacuum leak. It has a shaft inside with a small slot in it. The slot lets in air. As it warms up the shaft turns and shuts off the slot. The aar can be stuck closed, in which case it never idles high, or it can be stuck open, in which case it will never idle down. You can elimnate the aar altogether by plugging the hose. Then find your leak.

Check the hose on the drivers side of the aar. Make sure the other end of that hose is connected to the cold start valve.

Thank you so much. I will try to chase that leak this weekend!

Terry

An easy way to check for vacuum leaks is to spray hoses, interfaces between intake tubes and heads, and other intake items with carb cleaner while the engine is running.

When you spray on the item leaking, the engine note will change immediately while the cleaner clogs the leak.

Success! Vacuum Leak solved for now. It was the small hose running from throttle body to the distributor! When I took it off to replace, it broke into two! Definitely a leak there!

Thank you so much to everyone who contributed advice to my problem. Yall are the best.

Terry

Awesome Terry. Don't it feel good when you fix it yourself?

Absolutely! I have been giving my local mechanic a lot of work this year. I have two other cars with 250K miles. Cheaper than a car payment plus lower insurance.

Terry

if fthat one was that bad, i would change them all at the same time, do the rest as well. . way to go!

What hoses does everyone use? I would like to replace them all also?
What should I get?
Thanx