MAP sensor location - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-18-2010, 04:39 PM   #1
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Default MAP sensor location

I recently had a check engine light come on for coe p0108. I know that this has something to do with the MAP sensor. Im having trouble finding the location of the sensor on my 3800 N/A engine. If anyone could point out where this is I would greatly appreciate it. I also woul like to know what vaccum lines I should check out. Thanks in avance
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Old 02-18-2010, 04:46 PM   #2
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BTW, I think I may have found it. I found a sensor on the top of the intake manifold on the passengers side near the accesory belt. On the sensor it says pressure sensor, and has the labels for what the three wires are. Is this the right sensor?
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Old 02-18-2010, 05:03 PM   #3
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Yes that is the one the pcv valve is in there also.
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Old 02-18-2010, 05:04 PM   #4
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ok, when i pulled it out, the map sensor broke in half, the little nipple part came off from the top. Do you think that is my problem?
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Old 02-18-2010, 05:12 PM   #5
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that would be you problem. Any sensor broken would throw a code. Plus one that involves springs.
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Old 09-03-2016, 06:35 PM   #6
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Default '92 Buick LeSaber map sensor

I have a '92 buick Buick lesaber and I am not able to find the location of it anywhere, I have googled and asked a mechanic friend of mine and still nothing. It is a 3800 engine...I think, to be perfectly honest I don't know much about cars
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Old 09-03-2016, 07:37 PM   #7
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It would be better to start a new thread at this point, since the old one is over 6 years old.

Check the 8th digit of your cars VIN, if it is an L then you have no MAP sensor, only a MAF sensor.
I think Vin C motors before 92' also had no MAP sensors...


If you do not have the L in your VIN then see below..

It should be behind the throttle body, near the firewall/passenger side area.
You have a bracket above your rear valve cover right?
If so look there.
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Old 09-03-2016, 07:44 PM   #8
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Thank you that actually helped a lot
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Old 09-04-2016, 08:25 AM   #9
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Very welcome, happy to have been able to help.
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Old 11-05-2016, 08:41 PM   #10
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Timely post! My Bonnie started running really rough, and the CEL started flashing. A code scan at autozone said map sensor. Surprised how small it is. Rolled in here to search for where it'* located, and here we are! Still having the random misfires prior, don't know if it'* related. But I'll find out tomorrow. Thanks!
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map, map location, map sensor, map sensor location, p0108, p108

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