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I've done a lot of searching the forums and this topic seems to be talked of frequently.
I just got done cleaning my EBPS tube which did not affect my AE values of the EBP and the Map sensor which are reading 1-2 psi apart which, from what i read is too much.
the pic is with KOER at idle.
I do not know how to convert the baro volts to psi.
Do these values indicate an issue with my EBPS?
The numbers are skewed in idle - it makes the EBP higher than the MAP. You need to check your numbers with Key On Engine Off (KOEO). I'll get the BARO voltages in the morning - I had a hard burn today.
Heres KOEO. Still a 1.15 psi difference. however the difference climbs a little on KOER when i rev it a little.
The reason I was investigating my EBPS is because of a dip in mileage.
I typically clean the EBPS tube every 2 years or so, however the sensor is original.
MAP sensor is 4-5 years old.
I'm going on a little trip tomorrow, and will check performance. Its not uncommon to get a little grey/black wisp of smoke at Wot. I didn't used to get that.
Your drop in mpg can be blamed on winter blend fuel. KOER no one cares about and you shouldn't either. KOEO is all anyone needs to know about.
Your MAP sensor is highly unlikely to be the problem, if there even is one.
Of course the numbers are going to change when you rev it a little... That's how the truck knows wha ts going on with it.
Maybe your truck has a boost leak. Thats the most common problem. Make a boost leak dector
That EBP sensor difference is on the cusp. If it's just off by 1 PSI all the way up, that may not be enough to justify the expense of a new one. If it's off by that percentage all the way up its readings, then that would justify replacing it. You can test the sensor with air pressure (pulled out and connected to the PCM with the key on and AE hooked up), to see if it's accurate at higher pressure. 35 PSI is max you would want to apply to the sensor.
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