Boost-Vacuum issue on Scanmaster

[nocooler]

A mighty vac and a low resolution air regulator for you compressor would allow you to test it. Just watch it on the powerlogger or scan master

[daveismissing]

I suspect the common failure mode is that it leaks and thus become inaccurate rather than just being wrong/bad. Anyone have exposure to a few failures?

[aminga]

it's a strain gage sensor so it can flake out electronically too.  You'll see it like in the output.  Most fail by leaking.  Apply 20PSI or so and I'll bet you can hear it leaking past the body. 

[Just a Six?]

I'm thinking I'll put back the 2 bar to test when the engine is hot & if it reads normal then the 3 bar is bad.
If the 2 bar also reads bad then I have another issue but I hope it's just the MAP sensor.
I only need to cruise & then get into a couple lbs boost to see if it's good or bad.
I'll try to do it this weekend & let you know what happens? 

[Steve Wood]

be sure to set the pl to two bar

[Just a Six?]

Good thing you said that Steve as I surely would have overlooked it. Good news is I'm picking up a 3 bar in the morning so hopefully it's an easy diagnosis.

[Just a Six?]

So I borrowed a known good 3 bar & long story short I couldn't get the engine compartment hot enuf to make it go nuts but it's going to be pretty warm here so maybe this weekend I'll know the problem. I wanted to post final results but don't have them yet.

[Steve Wood]

maybe it did not go nuts because that fixed the problem!  Be optimistic

[Just a Six?]

I sure hope so Steve, but my testing was messed up from a hose I knocked off by accident.
Long weekend here so if the rain stays away the roads will be wide open. 

[gusszgs]

Watch out for the boyz in blue.........t hese long weekends are great revenue generators for the gubment