Turbo Boost Sensor A Circuit Low
What to do?
It does seem when the engine is cold the turbo charger does not seem to want
to work very well till it is warmed up.
Going up steep hill, the engine kinda jerks a little bit. Only for a moment
I am sure good ol Tom Lawrence will be able to advise me on this.
Bad sensor? Bad wire? Big $$$ at the stealership?
Oh yeah 2000 CTD Automatic.
Voltage from the MAP sensor is too low. It's the three-wire
sensor/connector on the top of the intake manifold, towards the back of the
engine. First, remove the connector, and check the general condition of the
wires, connector, and pins. Clean anything that looks like it would cause a
poor connection. If that doesn't do it, turn the ignition on, and check
voltage between the orange (+5V) and black/blue (ground). If there's no
voltage there, or it's significantly less than 5V (under 4.5V), there's a
Next, make a jumper wire to connect the orange and gray/red wires together
(feeding full reference voltage to the signal circuit), then start the
engine. Check for codes. If a P0238 is set (means MAP sensor voltage too
high), your wiring is good, and you'll need a new MAP sensor. Otherwise,
you have a wiring problem.
Thanks for that quick input.
This did it before and after the truck had all day to cool down the code
Now today it did it again.
I looked for the 3 wire MAP sensor. I think you better have a look before I
try anything.. There is a 4 wire device at top instead of 3.
I will post the pictures in another post incase you have a problem seening.
Sorry - my mind's stuck in 3rd Gen mode... the MAP is on the side of the
intake manifold on the 2nd gens, just behind the fuel filter canister...
there are actually two connectors there in close proximity. The MAP is the
forward sensor - the rearward sensor is the IAT (and is a two-wire sensor,
whereas the MAP is a 3-wire)
Great... can't wait for the net nannies to complain about binaries in the
Incidentally, I have no idea what you were taking pictures of... that's
gotta be some kind of aftermarket setup - no idea what it's for, but it
didn't come that way from the factory.
A little low (would probably read higher with the engine running).... but
not enough to cause that code on it's own. Do the jumper wire test, and see
if the P0238 code pops. If so, I'd pick up a new MAP sensor. Now you know
where it is, so changing it should be simple :)
Okay..I will check tomorrow..I need to borrow the Autozone machine again to
Autozone does not have them, but Kragen Auto parts does. $95, Ouch.
I hope the picture of what they show to be the MAP sensor is not the actual
The only part that looks like it is the connector.
Thanks for the super help and I will let you know tomorrow.
It's just my opinion, but, when the pics are relevant to the problem, like
these are, then the net nannies should go play in the sandbox. Or they can
stick to complaining about my Cushman pictures.
To GeekBoy: Thanks for the pictures. I learned from them and have a better
understanding of what's under the hood of the newer trucks.
"Tom Lawrence" < firstname.lastname@example.org> wrote in message
This is a unmoderated group. We have been writing and posting what we want
for some time. Although to be polite, ya might want to let folks know that
pic's are on the way in the subject line.
Just to clarify: Usenet is a distributed network.
Every time you post anything, it's stored on tens of
thousands of servers around the world... and must
therefore use many thousands of times the bandwidth
of your single post regardless of whether anyone
"clicks" on it or not. So, it's not the bandwidth of
downloading to individual desktop machines, but the
"overhead" bandwidth and storage that ires news admins,
especially if they've got the text groups on an 80GB
drive, and people start posting DVDs there.
Some servers limit retention time of a group by
the the number of MB in a group, so when you post a
single binary, you knock off 100 text messages from
the backend of those servers.
Some news admins will actually drop a group if it
starts becoming abused with too many binaries. By
posting binaries, you COULD actually be the cause of
someone not getting your favorite group anymore.
Additionally, NNTP is a 7-bit protocol. That means
a 100K graphic must be encoded to 7-bit, which means
that the data transmitted and stored is really ~140K.
Put graphics on a web server. Then a 100K graphic
only takes 101K of bandwidth to download... only
the number of times someone actually downloads it.
Just two years ago, I was in a place where there
was no cable, no DSL; only dialup... and only 19,200
kbps at that. Yes, the world is changing, but there
are still plenty of places where the phone companies
and cable companies find too low density to bother
Networks are getting faster, true enough. NNTP is
still NNTP though, and posting 8-bit data to 7-bit
protocols is still inefficient, not to mention, stupid.
Posting binaries to non-binary groups is abuse, no
matter how much you try to rationalize it.
Subject: Re: DANG IT! Engine Light on.
User-Agent: slrn/0.9.8.1 (FreeBSD)
X-Abuse-Info: Please be sure to forward ALL headers so that we may process
your complaint properly.
NNTP-Posting-Date: Wed, 19 Apr 2006 16:26:02 UTC
Date: Wed, 19 Apr 2006 16:30:43 GMT
Xref: titian.nntpserver.com alt.autos.dodge.trucks:259047
How generous of you. Force people who have been
using and enjoying usenet for years and years to switch
to the piece of shit google interface just so you can
indulge yourself by posting binaries to text-only
groups... when there are plenty of binary groups you
could have posted and linked to, not to mention all
the free picture hosting sites out there.
How generous of you to consider walking in another
man's shoes, who
a) doesn't run MicroCrap,
b) doesn't have $400,
c) has no clear view of the southern sky,
d) would prefer to get text groups at 19,200kbps than
abusive binaries at 256Mbps (or whatever sat. comes
e) lives somewhere outside North America,
f) pays for his internet connection by the KB rather
than by the month, and/or
g) uses a text-only newsreader, so only sees binary
attachments as uuencoded 7-bit text anyway.
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