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  #1  
Old 04-05-2020, 12:18 PM
Aybear Aybear is offline
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Join Date: Oct 2019
Posts: 5
Default Small gray tube disconnected under hood

Anyone know what this tube is? It's just sitting there and not sure if this is important or not. Thanks.

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2000 Ford Ranger XL | 2WD | 2.5L | Regular Cab | Currently at 69k mi
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  #2  
Old 04-06-2020, 08:45 AM
tomboy tomboy is offline
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Join Date: Nov 2011
Posts: 1,923
Default Re: Small gray tube disconnected under hood

Looks like a vacuum line, it could cause bad idle, or something in the heating, cooling not to work right.
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Old 04-06-2020, 02:39 PM
Mike69 Mike69 is offline
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Join Date: Oct 2013
Posts: 7,479
Default Re: Small gray tube disconnected under hood

With the engine running put your finger over the opening & if you feel a vacuum then it could cause idle problems & heating/cooling as in A/C not to work right. Look in your heater hoses back near the firewall see if your truck has a heater valve, it looks like the one that hooks to that valve on my 2000 Ranger. It could look like this,
https://www.rockauto.com/en/moreinfo...sn=591&jsn=591
or this,
https://www.rockauto.com/en/moreinfo...sn=592&jsn=592
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2000 Ranger Extd Cab XLT, 4X4 Off Road, 4.0L, Auto, 8.8 - 4.10's, 01 grille & lights swap. (My DD)
69 Mustang, modified 5.0, & 5spd.(project)
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