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POS 1990 (Renix) Laredo 4.0 MAT sensor

Old Dec 13, 2010 | 05:46 PM
  #1  
semperfi1371's Avatar
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From: Chicago, Il & Courthouse Bay, NC
Year: 1990
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Engine: 4.slow
Default POS 1990 (Renix) Laredo 4.0 MAT sensor

Does anyone have the correct Omix-Ada part number for the MAT (manifold air temp) sensor? I ordered the one that came up under search, photo "may not represent actual product" and it isn't correct, it is for '91+ Omix-Ada #17221.01. Will it work? Maybe, if I find the proper connector. I'd just like to find the right one, with the pigtail & "weatherpack" connector. I don't care who manufactures it, as long as it works & connects quickly! It is 5º with a -18º wind chill here, no desire to be out there any longer than needed, I just spent the last 5 weeks outside on the streets of downtown Chicago getting this POS running again! Any help appreciated!
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Old Dec 13, 2010 | 09:20 PM
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Year: 1990
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Engine: 4.0l
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The MAT sensor is discontinued and no longer available. Don't worry to much though, just use a coolant temp sensor they have the same resistance and I think they'll plug right in. It the same sensor that under the intake/exhaust, not the the one on the back of the head.

Here:
http://www.lunghd.com/Tech_Articles/...iagnostics.htm

Stay warm buddy
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Old Dec 13, 2010 | 09:30 PM
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Year: 1988
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Originally Posted by semperfi1371
Does anyone have the correct Omix-Ada part number for the MAT (manifold air temp) sensor? I ordered the one that came up under search, photo "may not represent actual product" and it isn't correct, it is for '91+ Omix-Ada #17221.01. Will it work? Maybe, if I find the proper connector. I'd just like to find the right one, with the pigtail & "weatherpack" connector. I don't care who manufactures it, as long as it works & connects quickly! It is 5º with a -18º wind chill here, no desire to be out there any longer than needed, I just spent the last 5 weeks outside on the streets of downtown Chicago getting this POS running again! Any help appreciated!
The response curve between the IAT and CTS is the same, but the sensor tips are different - you don't get quite the same response from the CTS in the airstream.

Fortunately, it is a standard GM part (most RENIX sensors are,) so you can source one from a speed shop or somesuch. Here's what I got a batch of last time I needed them - http://www.injector.com/cart/pc/view...&idcategory=12. Their MAP sensors and CTS units also work well for RENIX.
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Old Dec 13, 2010 | 10:44 PM
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From: Chicago, Il & Courthouse Bay, NC
Year: 1990
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Engine: 4.slow
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Originally Posted by 5-90
The response curve between the IAT and CTS is the same, but the sensor tips are different - you don't get quite the same response from the CTS in the airstream.

Fortunately, it is a standard GM part (most RENIX sensors are,) so you can source one from a speed shop or somesuch. Here's what I got a batch of last time I needed them - http://www.injector.com/cart/pc/view...&idcategory=12. Their MAP sensors and CTS units also work well for RENIX.
This is the one I got, too bad without the connector...and for $8 more! haha! Well, I will have to see if I can find the correct connector for it on the cheap, looks like I may be taking a swing by the boneyard in the morning!
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Old Dec 13, 2010 | 10:48 PM
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From: Chicago, Il & Courthouse Bay, NC
Year: 1990
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Engine: 4.slow
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Originally Posted by EVcherokee
The MAT sensor is discontinued and no longer available. Don't worry to much though, just use a coolant temp sensor they have the same resistance and I think they'll plug right in. It the same sensor that under the intake/exhaust, not the the one on the back of the head.

Here:
http://www.lunghd.com/Tech_Articles/...iagnostics.htm

Stay warm buddy
I'll be doin my best on this, hopefully my nightmare is over til spring at least! I work in the weather, I have no desire to come home and get stuck in it any longer, I like to kick back & stay warm in my spare time!
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