Map Sensor Problems - Miata Turbo Forum - Turbo Kitten is watching you test compression.

Serper3 · **Map Sensor Problems**

I am experiencing some problems with my map sensor.. At first, the adaptronic was not reading any map value. Under the gauges display, i would simply see a dash. Stein recommended I reflash the adaptronic and see if that works. I had problems for some reason doing this with my laptop. (i have a new 3 month old laptop) i tried flashit on my friends computor and it worked right away. i am still not sure why it wasnt working with my computer, because wari works flawlessly on my laptop.

The reflash ended up fixing the no map value. (thanks alot stein) i now however have erradic readings though with the map sensor. with the map sensor i got from travis, i am getting an atmosheric value of approximate 17 kpa. i have another 3 bar gm map sensor, actually the one from diyautotune that my friend gave me to try, and this one is reading 144 kpa.
I am certain that the wiring is done exactly like stein;s instructions. it seems like this has to be a wiring problem.. two bad sensors? seems unlikely i would assume.
what do u guys think is going on here?

Stein · 04-22-2009, 02:25 PM

I'm all out of ideas. My first MAP read in the 40's at atmospheric after I reflashed. Second one right at 106-108 where it should be. All I did was swap the unit.

I think we did this already but confirming these settings:

Serper3 · 04-22-2009, 02:30 PM

the settings are the same as what i have. i think travis had some ideas or maybe something i can try... maybe someone else will chime in. thanks for the help though john, at least i actually GET a map value now lol.

Serper3 · 05-01-2009, 05:03 AM

Hey sorry guys! I havent been posting because I couldn't get any time to work on the car :(... I should be able to work on it tomorrow (friday). Wish me luck!

sv650_ck · 05-01-2009, 06:56 AM

What's your map sensors input and output voltage at atmospheric? Does the output voltage go up and down when you blow/suck into the senor port?

**y8s** · 05-01-2009, 10:32 AM

Hey Serper, you're another 01+ guy right?

Can you do me a favor and try to get the values of the resistors that tie in the MAF and ECT on the plug-in harness? They're labeled R1-4 on the lower right corner of the schematic:

http://y8spec.com/adaptronic/NBB_Plug-in_Schematic.pdf

Probably easiest just to record the colors on them but if you can unplug the harness on both ends and probe them, that'll work too. (leaving it plugged in will get you false values)

I'd rilly appreciate it.

nuroski · 08-15-2011, 10:59 AM

Quote:
	Originally Posted by Serper3 I am experiencing some problems with my map sensor.. At first, the adaptronic was not reading any map value. Under the gauges display, i would simply see a dash. Stein recommended I reflash the adaptronic and see if that works. I had problems for some reason doing this with my laptop. (i have a new 3 month old laptop) i tried flashit on my friends computor and it worked right away. i am still not sure why it wasnt working with my computer, because wari works flawlessly on my laptop. The reflash ended up fixing the no map value. (thanks alot stein) i now however have erradic readings though with the map sensor. with the map sensor i got from travis, i am getting an atmosheric value of approximate 17 kpa. i have another 3 bar gm map sensor, actually the one from diyautotune that my friend gave me to try, and this one is reading 144 kpa. I am certain that the wiring is done exactly like stein;s instructions. it seems like this has to be a wiring problem.. two bad sensors? seems unlikely i would assume. what do u guys think is going on here?

I know it has been awhile since you posted this but i am having similar problems with my MAP sensor. What did you do to fix your. i have been trying everything and coming out with nothing.
s