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Reload this Page TBI Sensor???

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Old 09-14-2009, 05:36 AM   #1
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TBI Sensor???
Bought the 91 RS and the guy told me there may be a TBI Sensor out causing something with the fans?? Have you heard of this?? To be honest when I picked up the beast the guy seemed a little tipsy slurring a little bit and whatnot, and I just had back surgery so I am on some serious Vicodin so with the combination I may have misunderstood. Please help me understand. I do specifically remember he said I had to leave the ac on the the fans would stay on if that helps
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Old 09-14-2009, 06:14 AM   #2
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Re: TBI Sensor???
Passenger head between sparkplug 6# and 8# you have the fan switch sensor, turns fan on/off around 220/195°.
AC on will keep the fan on regardless of the fan switch working properly.
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Old 09-14-2009, 08:00 AM   #3
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Re: TBI Sensor???
Hmmmmm, my fan runs constantly. I wonder what is causing that.
Last edited by Saabster; 09-14-2009 at 08:09 AM.
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Old 09-14-2009, 11:42 PM   #4
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Re: TBI Sensor???
Thanks Thomas you guys are great on here. I mean I know enough about cars to get myself in trouble but if there is something I don't know there is always somebody on here that does
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Old 09-15-2009, 02:02 AM   #5
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Re: TBI Sensor???
Quote:
Originally Posted by Saabster View Post
Hmmmmm, my fan runs constantly. I wonder what is causing that.
Wired up that way by previous owner? lol
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Old 09-15-2009, 01:56 PM   #6
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Re: TBI Sensor???
Quote:
Originally Posted by Saabster View Post
Hmmmmm, my fan runs constantly. I wonder what is causing that.

This is the default failure mode of the fan temp switch. When it breaks it keeps the fan on non stop. Time for a new one.
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Reload this Page TBI Sensor???
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