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Old Apr 20, 2010 | 07:27 PM
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Default Newbie help

Howdy, I put an LS1 in my 61 Impala and I am now getting around to hooking all the harness wires up. I have an after market harness. The first picture shows a little female connector, of which I have no idea what connects to it??? I have no extra wires (excpet for my o2 wires) I've attached a couple of pics. The first pic has a red arrow pointing to the unit.

What am I missing? Thanks in advance!!!!
Attached Thumbnails Newbie help-intake-pics-001-arrow.jpg   Newbie help-intake-pics-002.jpg   Newbie help-intake-pics-003.jpg  
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Old Apr 20, 2010 | 07:45 PM
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is the 1st picture of back of the intake? looks like a map sensor
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Old Apr 20, 2010 | 07:48 PM
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Yes, the first pic is the back of the intake. (sorry) If it is a map sensor (?) whatever that is, do I need it?
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Old Apr 20, 2010 | 08:06 PM
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A manifold absolute pressure sensor (MAP) is one of the sensors used in an internal combustion engine's electronic control system and yes you do need it
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Old Apr 20, 2010 | 08:09 PM
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becarful not to break it, to remove it you need a map sensor socket. there should be a plug in on the harness
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Old Apr 20, 2010 | 08:19 PM
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oh oh, me thinks me in trouble. I have no extra wire to connect to it. I ran the engine in the frame before I put the body on it, and it ran fine. The computer was tuned for my application, does that make a difference?

Last edited by 61 Impala; Apr 20, 2010 at 08:21 PM. Reason: spelling what else
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Old Apr 25, 2010 | 07:21 PM
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Default Anyone else want to chime in?

I'm really not sure, so anyone else got an opinion?
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Old Apr 25, 2010 | 07:49 PM
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The first one is the oil pressure sending unit. The map is a smaller one with an angle 3 pin connector plugs into a gromet into the back of the intake.

This is a MAP sensor...


THIS is the oil pressure unit, yes it is fragile.
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Old Apr 26, 2010 | 09:12 PM
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Excellent, thanks. The MAP sensor is connected. According to my wiring guy, I don't use the stock oil pressure sensor. That's why the engine ran with no problems without the oil sensor being connected. I have to drill and tap a hole somewhere near the oil filter to use after market gauges.

Thanks for the help!!!!
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Old Apr 26, 2010 | 09:30 PM
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No problem. Are you going to leave the oil pressure unit in there for now? You can prolly find a pipe thread plug at a hardware store if you take it out.
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