vacuum sound???
#1
Registered User
Thread Starter
Join Date: Apr 2008
Location: Chicago
Posts: 89
Likes: 0
Received 0 Likes
on
0 Posts
vacuum sound???
Hey, I have a 3rd gen 4runner that's been making a vacuum sound for the past 2 years or so now.
Here's what happens (only when heat is on, I think the a/c too but I can't remember):
When I'm sitting idle I'll first hear a click sound coming from I think under the glove box. Sounds like a relay switch. Then the idle will go up about 100 rpms and there will be a vacuum sound coming from the same spot as the click sound. Then about 5-10 seconds later it'll click again and the vacuum will stop and the idle will go back down? This happens at almost every stop light. Anyone know what this is? Thanks for any help!
Here's what happens (only when heat is on, I think the a/c too but I can't remember):
When I'm sitting idle I'll first hear a click sound coming from I think under the glove box. Sounds like a relay switch. Then the idle will go up about 100 rpms and there will be a vacuum sound coming from the same spot as the click sound. Then about 5-10 seconds later it'll click again and the vacuum will stop and the idle will go back down? This happens at almost every stop light. Anyone know what this is? Thanks for any help!
#3
Registered User
Thread Starter
Join Date: Apr 2008
Location: Chicago
Posts: 89
Likes: 0
Received 0 Likes
on
0 Posts
Ok thanks a lot Cougar, glad to hear it's normal! I must not have noticed the first few years I had it.
Last edited by JimiJams; 01-30-2009 at 11:23 AM.
Thread
Thread Starter
Forum
Replies
Last Post
montanatruck
86-95 Trucks & 4Runners
15
02-26-2017 07:07 AM