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Sound at startup

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Old Aug 23, 2007 | 01:45 PM
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Mudding
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Default Sound at startup
I recently started hearing a sound right at startup whhen cold. It sounds like a pump? coming from behind the glove box in the engine compartment.. any ideas?? any info on how to fix it??
 
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Old Aug 23, 2007 | 02:17 PM
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Default RE: Sound at startup
Year, model and mileage???
 
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Old Aug 23, 2007 | 08:15 PM
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2002 disco II SD with 84000 miles
 
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Old Aug 27, 2007 | 02:41 AM
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Default RE: Sound at startup
anyone?? It runs great, just a sound like a pump for about 25 seconds when cold and thats it..
 
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Old Aug 27, 2007 | 09:11 AM
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Default RE: Sound at startup
Do you have secondary air as one of your emission control devices, look for a air pump/fan on the passanger side of the engines firewall?
 
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Old Aug 27, 2007 | 11:45 AM
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yeah, what is the pump for...??
 
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Old Aug 27, 2007 | 03:17 PM
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Default RE: Sound at startup
For your secondary air to help push exhaust back thru the engine to be reburned.
 
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