Hello, forum

Here is the things, when I replaced the lower windshield cowel, I had to remove the hood, and I noticed the other day it was set to far back, so I moved it a bit forward the same day I replaced the bleeder screw with a brass one. Now when I give it gas, I hear a super annoying whine and its loud enough to notice. What could this be? It sounds like an air intake or a belt or an electrical whine. Thats the best I can describe it. Any ideas on what to check first? I also just realized, it started after I cleared my AC condensation lines which were clogged. Any help is greatly appreciated.

Best,
Ashtray

 

One cheap way to isolate noises is to determine if it is related to things turned by the belt. I use a broom handle (with SWMBO permission, life's a witch, then you fly) pressed to my ear and then to the suspect parts. You can hear things drowned out by other engine noises. The stick makes it easy to keep your dreadlocks out of the un-guarded belt area. Safety around rotating machinery is serious business. They also sell mechanic stethoscopes.

Or remove belt and turn things by hand checking for roughness. Be sure fluids, like power steering, are full. And listen to the SAI pump, if so equipped (but it should not stay on very long).

 

Thats a good idea, but it really is only noticeable with a cold start and with throttle give. I'll check it out this Thursday after exams. Will report back I have noticed that the fluid in the reservoir that has a symbole of a truck with arrows leaning it to either side is below minimum. I havent checked power steering Or the SAI since I'm not sure what SAI is yet.

 

Probably power steering pump.
It is mounted to the engine without any rubber shock mounts.

I had the same issue.

Replaced the power steering pump.
No difference. Noise still there.

I ignore it now.

Here is how I isolated it.

 

I'm sorry but if the noise persists then the culprit may not have been the power steering pump. Or am I missing something. Anyways I'll report back when I have more info. Studying for exams now.

edit: How could the noise just come out of "nowhere"?

 

Secondary Air Injection

if you do a search you should find postings, there is a pump mounted on the firewall under the hood on the passenger side. They are known to make noise, possibly something got knocked off while adjusting the hood. i have heard it discribed as simular to a hair drier.
I do not know as my truck is not equipt with SAI.

 

Good point.
The noise will only last for 30 seconds to a minute then over
SAI pump as drowsap pointed out.
Then just don't worry about it.

Worry about exams.