What are normal MAP datastream values? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 3 (permalink) Old 05-30-2009, 09:21 PM Thread Starter
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What are normal MAP datastream values?

I have a 99.5 F250 7.3 with 174K on the clock. Was recently looking around at the datastream on a SnapOn Solus Pro. I noticed the MAP readings seem a bit funny. BARO = 100, normal. At idle, MAP kPA is 83. which may be about normal.. but, the MAP Hz PID always reads 0.. at idle, while driving, etc. What is a normal Hz value for the MAP sensor?

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post #2 of 3 (permalink) Old 05-30-2009, 10:19 PM
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Re: What are normal MAP datastream values?

The MAP sensor output is an analog voltage, not a proportional/frequency-based (modulated) output.

You won't see any "Hz" reading, because it's a straight DC output.

The scan below shows the output voltage relative to input absolute pressure (psia) (scroll down to the bottom of the pic):


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post #3 of 3 (permalink) Old 06-03-2009, 12:49 AM Thread Starter
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Re: What are normal MAP datastream values?

Thanks for the info, that's what I was wondering!

99.5 F250 PSD - 2" lift, 35s, Detroit Locker, TS Performance 6-position flip chip, 4" straight-piped exhaust, TS Intake
2003 VW Jetta 1.9 TDI - 50 mpg :)
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