Air Pump
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Junior User
Joined: Jan 2002
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From: Green Bay USA
Air Pump
Saturday I installed new plugs/wires on my truck, along with a new gasket at the carb base. Everything went well. I disassembled as little as possible in the process. Now the air pump has seized up. Is there any other explanation other than the bearrings just decided to go now. Coincidence????? Or could it be something I did. How much is a reman pump?
'86 F250 4x4 351w
'86 F250 4x4 351w
Last edited by ScottyB; Oct 31, 2005 at 10:39 AM.
FTE Chapter Leader
Joined: Sep 2000
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From: Beachville, Ontario
How long had it been sitting? It's typical for them to seize up after sitting, what with a steel vane in an aluminum housing and all....
You can usually grab used ones at wreckers fairly cheap.
You can usually grab used ones at wreckers fairly cheap.
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Joined: May 2003
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I doubt it was anything you did, it probably was just coincidence( it is a 20+ year old truck after all). I don't know about the price on a reman, as inspection stations here are pretty lenient on the visual portion of the smog test, as long as it will pass the sniffer-I have left mine off.
Lead Driver
Joined: Dec 2002
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From: Kuna ID
I think they have those stupid lifetime sealed bearing that you can't lubricate. My truck has 2 air pumps, and 1 of them was seized when I got it. A new pump costs about $300, while the reman was $30-$50 I believe. I leave the belt off of the pumps though, only putting it on for the smog test. 
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Junior User
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From: Green Bay USA
I'm not concerned about any smog tests.
So, If I leave the belt off the pump will I need to make any adjustments or should the motor run the same with our without it?
Thanks for your help so far.
So, If I leave the belt off the pump will I need to make any adjustments or should the motor run the same with our without it?
Thanks for your help so far.
Lead Driver
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From: Kuna ID
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Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
the truck will run fine without it but if you have a cat it will ruin the cat. the air pump injects air into the system to assist the cat burn leftover fuel.
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Lead Driver
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From: Kuna ID
Originally Posted by ford390gashog
the truck will run fine without it but if you have a cat it will ruin the cat. the air pump injects air into the system to assist the cat burn leftover fuel.
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