post #1 of Old 06-22-2012, 09:55 PM Thread Starter
dvsxj2954
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1998 XJ Cherokee 
 
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Location: centreville
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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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post #2 of Old 06-22-2012, 10:27 PM
AZ Jeff
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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

AZ-Jeff
I don't own an XJ any longer, but I still think they are the best of all the Jeep products ever made. My XJ was my favorite vehicle in my 50+ years of driving.
So...I stick around and give advice.
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post #3 of Old 06-22-2012, 10:40 PM Thread Starter
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

98, xj, 4.0, auto trans, np231j w/ sye, adams cv rear shaft, 8" clayton long arm, cut fenders, custom front bumper, cold air intake, removable doors, 15x10 black d windows, 33x12.5r15 (2 swamper truxis & 2 mud claws), flowmaster 40 series
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post #4 of Old 06-23-2012, 06:08 AM
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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post #5 of Old 06-23-2012, 06:11 AM Thread Starter
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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post #6 of Old 06-24-2012, 02:53 AM
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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post #7 of Old 06-24-2012, 07:50 AM Thread Starter
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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post #8 of Old 06-24-2012, 02:57 PM
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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