Weird noise up by battery??

[izackary]

So last night I heard a strange noise when I started up the car. In fact I thought it was an animal in the woods! It was like a cross between a whippoorwill cooing and a coyote yip. It has happened every time I have started the car ever since. In fact it is a little intermittent at first but it settles down and goes away. I haven't been able to localize the noise yet other than it is in the area between the driver side headlight and around the battery, maybe near where there looks to be a manifold, possibly for the air ride lines.

I am puzzled. Any ideas??

 

[driller]

Secondary A.I.R. pump?

It only runs a few moments on cold start.

It is located in the drivers side fenderwell.

The ABS pump is also located in the vicinity and runs a self test upon each start-up sequence. That is near the "manifold" you can see behind the headlamp on the drivers side.

 

[izackary]

I think next week when work gets started on the tranny cooler (finally!!) I may have the front cover taken off to better localize everything. It may actually be coming from the ABS stuff below. Is this an urgent matter at all?

I was reading some old posts of yours yesterday regarding this "A.I.R." What does it do?

 

[izackary]

You know what...it kind of sounds like the cooing Dilophosaur from Jurassic Park.

 

[psychostang]

IT helps the catalytic converters light off and convert efficiently upon start up.

 

[driller]

You know what...it kind of sounds like the cooing Dilophosaur from Jurassic Park.

That would make me think it is the secondary air injection pump.

 

[izackary]

That would make me think it is the secondary air injection pump.

That bulky looking thing way down just above the bottom of the bumper cover?

 

[driller]

That bulky looking thing way down just above the bottom of the bumper cover?

LOL... tough to follow that description. Follow the tube from the diverter valve in front of the crank pulley.

It is not the ABS pump...

 

[izackary]

(Eww!)

 

[izackary]

What is the dome-shaped part below the left headlight? I crammed my arm down in there yesterday after dealing with the goofy noises for this long, and felt the top of this and it vibrated right along with the noise until it stopped. I will try and get a pic sometime soon...

 

[budpytko]

Does your horn work? The horn is located in that area. OOPS - nope that's on the pass side.

 

[izackary]

Does your horn work? The horn is located in that area. OOPS - nope that's on the pass side.

Regularly.

 

[izackary]

Funny thing is ever since I pushed my hand down on it yesterday, it's STFU.

 

[SCTBIRD1173]

The secondary air injection pump is in that area. Not really sure if that's what you are talking about but that came to mind. (also not sure if the Gen1s have one)

 

[driller]

The secondary air injection pump is in that area. Not really sure if that's what you are talking about but that came to mind. (also not sure if the Gen1s have one)

Only the '96 Gen 1's have them.

 

[izackary]

Special me. (Pumps for what? Air ride? ABS?)

 

[driller]

Secondary Air Injection pump.

It runs for a few seconds after startup to inject fresh air in the exhaust manifolds to assist the catalytic converters getting up to temperature for emissions control.

 

[SCTBIRD1173]

It pumps air into the heads. It's an emission thing.

Damn.. beaten by seconds!

 

[izackary]

Lame. Sounds like unnecessary baggage to me. ie: "Expendable."

 

[budpytko]

I think disconnecting it will give you a CEL.