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MAP sensor loose...???

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Old Feb 23, 2010 | 09:40 PM
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Default MAP sensor loose...???

I just swapped to a FAST 90 intake manifold. When I was re-installing everything, I noticed that my MAP sensor doesn't fit in this intake nearly as tightly as it did in my stock intake.

Is this a common issue? Is it something that needs to be fixed, or is it a non-issue?
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Old Feb 24, 2010 | 04:16 AM
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You can buy a new MAP sensor seal #16194007 and that might tighten it up.
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Old Feb 24, 2010 | 08:21 AM
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i have read about this before, i believe people put a little silicone on the seal and that seemed to help
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Old Feb 24, 2010 | 10:43 AM
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glue da bitch
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Old Feb 28, 2010 | 05:49 PM
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another solution is to use a cotter pin, slip it in between the sensor and he little groove in the hold down clip.then bend one end around like you normally wold on a cotter pin. works like a charm, no need for glue or anything, I did put a little silicon around the gasket just for extra insurance.
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Old Feb 28, 2010 | 08:41 PM
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Originally Posted by $750 L98
another solution is to use a cotter pin, slip it in between the sensor and he little groove in the hold down clip.then bend one end around like you normally wold on a cotter pin. works like a charm, no need for glue or anything, I did put a little silicon around the gasket just for extra insurance.
Hold down clip, eh? Hmmmm...I don't recall seeing one of these.
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Old Feb 28, 2010 | 09:13 PM
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That's the thing about the fast 90-92..it doesn't have the clip molded into it for holding the map sensor in place like the stock intake. I just did one on a 92, I used some high quality rtv that was o2 sensor safe, worked good.
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Old Feb 28, 2010 | 11:28 PM
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ah sorry yeah, it wouldn't work on a FAST intake. But for the LS1/LS6 intakes, a cotter pin will fix the loose MAP issue. I gave it a run with the cotter pin holding it down and it's just crazy how much better the car runs, I guess under throttle the MAP was being pushed out or leaking one way or the other.

It pushed through the brakes constantly and idled a bit high, seemed very lacking at low/part throttle as well as sputtering up top. Fixing the loose MAP cured it all.
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Old Mar 1, 2010 | 06:53 PM
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go to the auot parts and tell the counter guy you want a thicker o-ring for your MAP sensor. explain to him what your trying to accomplish here and I'm sure they will find you a o-ring is thicker and will fit the sensor. that should fill in the looseness you feel. 6 months ago I had that same issue on the PP intake, ended up installing a thicker 0-ring and I have not had issues since.
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