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Unread 06-22-2012, 09:55 PM   #1
dvsxj2954
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1998 XJ Cherokee 
 
Join Date: Jun 2012
Location: centreville, michigan
Posts: 16
air intake temp sensor

the p.o made a cold air intake for my jeep and my check engine light is on and i noticed clean looking plug that isnt plugged in to anything and my brother who is a mechanic said he thought it was for an air intake temp sensor, im assuming if that what its for that the sensor goes in the air intake between the filter and the throttle body ? if so is this the correct looking sensor ? thanks

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Unread 06-22-2012, 10:27 PM   #2
AZ Jeff
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2014 JK Wrangler 
 
Join Date: Sep 2005
Location: San Tan Valley Arizona, AZ
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There are not any sensors in the air intake stream between the air filter and the throttle body on your model year.

Since you have a CEL, did you pull and codes
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1992 XJ -- stock (RIP)
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Unread 06-22-2012, 10:40 PM   #3
dvsxj2954
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No probably going in to the shop tomorrow to hav him pull codes

1998 xj 4dr, 4.0L, 8 " clayton long arm, black soft 8's, 33x12.5r15 bfg mt's
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Unread 06-23-2012, 06:08 AM   #4
Kalali
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That looks like the sensor that goes into the intake manifold near the TB on my '00 model.
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Unread 06-23-2012, 06:11 AM   #5
dvsxj2954
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Advanced auto parts web sight said it fits a 1998 but now that u say that i think that is the sensor in my manifold by the tb
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Unread 06-24-2012, 02:53 AM   #6
2000dd
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Yep, I just bought one and will instal when the sun comes up. I have seen a few threads where people have relocated this sensor to the air intake tube, rather than near the throttle body on the intake manifold, ... Just an fyi, if your Jeep has one installed there.

By the way, should I use a Teflon tape when installing my new one?
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Unread 06-24-2012, 07:50 AM   #7
dvsxj2954
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whats the point moving the sensor from the nicely threaded hole in the intake manifold to the air intake tube ?
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Unread 06-24-2012, 02:57 PM   #8
Kalali
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Quote:
Originally Posted by dvsxj2954 View Post
whats the point moving the sensor from the nicely threaded hole in the intake manifold to the air intake tube ?
The PCM uses the input from that sensor (among other data) to regulate the spark and pulse width of the injectors. In theory, the closer the output of that sensor approximates the ambient air temperature, the better the combustion. Now given that our stock XJ air box inhales the air under the hood, moving that sensor should really make no difference.
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