LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

93 blowing air pump fuse

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Old May 3, 2003 | 11:08 AM
  #1  
t.renz's Avatar
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Joined: Feb 2001
Posts: 117
From: Shakedown Street, Buffalo, NY
93 blowing air pump fuse

Does this mean the pump has had it? How much does this part cost? Is there a recall on it??

Thanks,
Tim
Old May 3, 2003 | 11:27 AM
  #2  
SWINGRRR's Avatar
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Joined: Oct 2002
Posts: 748
From: P-cola Fl
You could have a short somewhere. Not real easy tracing down the wires, due to the wire looms, and tape. Maybe time to yank it off the car!
Old May 3, 2003 | 04:36 PM
  #3  
Injuneer's Avatar
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From: Hell was full so they sent me to NJ
Pull the electrical connector off the pump. Put a good fuse in it. That will tell you if you have a problem with the wires. If the fuse doesn't blow, connect the AIR pump and start the car. If the fuse blows, there's a good chance the pump has rusted up and is getting hard to turn. The early models also had a problem with undersized wires, so there is just too much resistance when the AIR pump starts to sieze up.

You might also want to check the black, conical check valves that keep exhaust gas from blowing back into the AIR pump. If these valve start to leak, it will just speed up corrosion of the AIR pump, when the water vapor on the exhaust starts to condense in the pump.

There was a recall for the AIR pumps on the 95 and up models only.... not for us 93 and 94 owners.
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