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AEM F/IC MAP Sensor Fail

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Old Apr 20, 2010 | 08:12 PM
  #41  
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I already did, I put the new sensor in and nothing. The board is fine. The water only came out when I took off that little hose. There is no way for water in it's liquid form to make it that freakin' far up the line. It had to just have been a bad combination of things. Any inline filters available to rid me of possible condensation problems that may occur again??
Old Apr 20, 2010 | 09:10 PM
  #42  
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This is exactly what happened to me last winter. I mean to the tee, water coming out and everything. Now, I was lucky and the sensor still works. Let me guess, do you have the wastegate hooked into the same line as the FIC? If so, I think this is the problem. What I gather is that liquid water, from the combustion process, gets sucked from the wastegate when going into vacuum, and it sends it through the lines...I could be wrong, but I bet that is the culprit. This is why I tee off the brake booster line for the FIC only. And everything else off the throttle body line...
Old Apr 20, 2010 | 10:50 PM
  #43  
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Originally Posted by dbrummet
This is why I tee off the brake booster line for the FIC only. And everything else off the throttle body line...
^THIS!!
Old Apr 21, 2010 | 12:37 AM
  #44  
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idk if i agree with you guys on this if your refering to the vac line that connects to the vsv...imho nothing should be anywhere near that thing. Id get rid of the thing if it didnt cause a cel.
Old Apr 21, 2010 | 12:38 AM
  #45  
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sorry to hear ranger...so whats the plan now?
Old Apr 21, 2010 | 01:56 AM
  #46  
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Originally Posted by crush02342002
idk if i agree with you guys on this if your refering to the vac line that connects to the vsv...imho nothing should be anywhere near that thing. Id get rid of the thing if it didnt cause a cel.
It makes perfect sense, it's what Toan once told me while my car was at PTUNING. The FIC MAP sensor is sensitive and anything can throw it off, perhaps it has more to do wit the fact that it's so damn cheap. At any rate Toan suggested that it certainly should be sourced independently from everything else so he mentioned the brake booster for it as the most consistent, reliable and dry source. IDK if that's what caused the problem or not but it sounds like a possible culprit.
Old Apr 21, 2010 | 02:13 AM
  #47  
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the part about it being seperate i agree with but having anything hooked up with the same vac source as the vsv is my issue (if thats what your talking about)....me and one of the p-tuning guys bs'd about it on here. I havnt seen though the fic map sensor as being very sensitive but again I fully agree. the bov and wastegate can cause a fluctuation which could cause problems with the map sensor readings.
Old Apr 21, 2010 | 03:01 AM
  #48  
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Default Re: AEM F/IC MAP Sensor Fail

I really have no problem with the vsv interfering that much with the boost gauge/BOV. The BOV is working like it is supposed to and the gauge is reading like it is supposed to. I dunno, never had a problem this way. All that really matters is the clean signal to the wastegate/FIC.

Someone mentioned the Ultimate...hmmm...I know that uses an external pressure sensor, and has more "features" than the aem...I know I will probably search...have you any exp with those Chris?
Old Apr 21, 2010 | 03:08 AM
  #49  
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nah...no one around here has the ultimate that i know of...too bad too cause id like to play around with it.
Old Apr 21, 2010 | 03:12 AM
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ask speedy000, he had is boost gauge hooked up to the vsv line and that needle would bounce like a freaking wing on a hummingbird, kinda hard to tell if there are any vac leaks if the gauge wont stay steady..lol...but its also going to depend on where exactly its tapped.
Old Apr 21, 2010 | 12:57 PM
  #51  
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Originally Posted by crush02342002
sorry to hear ranger...so whats the plan now?
The plan now is I'm selling the other one for 100 plus shipping for VTEC or nitrous use. Everything else on it works perfect still.

In the mean-time, I might just separate the F/IC line because I had mine coming off the vac block sourced from the break booster so I'll have to dabble a little under there today. I do NOT want to buy an F/IC every year lol!
Old Apr 21, 2010 | 02:03 PM
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I hear that.
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