what is it?
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
what is it?
There is a ball shaped device behind the front left bumper . inside the scoop, the furtherest forward aria, under the drivers side headlight when the hood is closed. Looks like some kind of a air pump. Mines making a racket. What the best fix options? (93 Coup) thanks
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Are you sure it's the round ball-shaped part? The AIR pump is bolted to the frame rail just about across from it. It's a cone shape. The AIR pump supplies air to the exhaust system as the engine is warming up and will shut off once the ECM goes into closed loop.
The round ball device is a vacuum tank for the cruise control and should not make any noise at all unless it has a leak
The round ball device is a vacuum tank for the cruise control and should not make any noise at all unless it has a leak
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
Are you sure it's the round ball-shaped part? The AIR pump is bolted to the frame rail just about across from it. It's a cone shape. The AIR pump supplies air to the exhaust system as the engine is warming up and will shut off once the ECM goes into closed loop.
The round ball device is a vacuum tank for the cruise control and should not make any noise at all unless it has a leak
The round ball device is a vacuum tank for the cruise control and should not make any noise at all unless it has a leak
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
The air pump is driven by the serpentine belt and is located on the front of the engine next to the alternator.
The round ball under the drivers headlight area is a vacuum canister or reservoir. This is a sealed unit with NO working parts.
The round ball under the drivers headlight area is a vacuum canister or reservoir. This is a sealed unit with NO working parts.
Drifting
Joined: Jun 2007
Posts: 1,261
Likes: 2
From: Prather, California -1990 ZR-1 White/Flame Red- -SOLD!!-
Advanced
Joined: Sep 2009
Posts: 51
Likes: 2
From: Flower Mound Texas
I have a 93 Coupe also. The Ball is a vacuum accumulator. It has a hose barb on the bottom. No moving parts.
Now a little inboard and to the rear of the ball is an electrically powered blower for the AIR system. If you hear noise in that vicinity it may be that blower assy. Should be able to disconnect it to see if the sound goes away. I have had no trouble with this on mine so I haven't looked into the circuits and/or sensors that make this thing go.
Now a little inboard and to the rear of the ball is an electrically powered blower for the AIR system. If you hear noise in that vicinity it may be that blower assy. Should be able to disconnect it to see if the sound goes away. I have had no trouble with this on mine so I haven't looked into the circuits and/or sensors that make this thing go.
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Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
I have a 93 Coupe also. The Ball is a vacuum accumulator. It has a hose barb on the bottom. No moving parts.
Now a little inboard and to the rear of the ball is an electrically powered blower for the AIR system. If you hear noise in that vicinity it may be that blower assy. Should be able to disconnect it to see if the sound goes away. I have had no trouble with this on mine so I haven't looked into the circuits and/or sensors that make this thing go.
Now a little inboard and to the rear of the ball is an electrically powered blower for the AIR system. If you hear noise in that vicinity it may be that blower assy. Should be able to disconnect it to see if the sound goes away. I have had no trouble with this on mine so I haven't looked into the circuits and/or sensors that make this thing go.
Melting Slicks
Joined: Feb 2008
Posts: 3,286
Likes: 6
From: Palm Beach
It reduces emissions after startup when engines pollute the worst. It does not affect the operation of the engine. Disconnecting it could throw a code. Not sure .
