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KAIMIKAZEE · Joined: 18 Sep 2005 Posts: 133

well my CEL kept going on even after i changed the sensor that CAT noted i should change.

any clues to why the code is reading "BAROMETRIC PRESSURE HIGH"

could it be serious if i left the CEL on...

no change in power or anything....

i got the code when i changed my air compressor... it wasn't specifically the one for the motor but it fit according to the shop that installed it..

anybody have the same problem????

possum squat · Joined: 21 Jul 2006 Posts: 50

okay, possum squat has waited long enough for the answer....since nobudy wants to even guess. then possum squat does.

It means a hurricane is on it's way. You need to pull over and take shelter

Really I would guess that the sensor you changed is still good, do hang on to it.

The pump you had changed? maybe it is the culprit.

possum squat · Joined: 21 Jul 2006 Posts: 50

CEL = check engine light
CAT = can of tacos ?

In am not sure what pump you were talking about. Try to tolerate my ignoramusness.
Heres some thing to think about:
Baro. pressure or atmospheric pressure varies with elevation ( and other things)
So,
One gallon of water weighs 8.34 pounds. One gallon of gasoline weighs about 6 pounds.

1 psi corresponds to 27.68 inches water column or about 37 inches of a column of gasoline.

Atmospheric pressure = 14.7 psi = 30 in/Hg = 34 feet of water

Here is a table that gives the atmospheric pressure at various altitudes. The altitude is given in feet and the pressure is in inches of mercury.

Altitude Pressure Altitude Pressure

0,000 29.92 20,000 13.75
1,000 28.86 25,000 11.10
2,000 27.82 30,000 8.886

3,000 26.82 35.000 7.041
4,000 25.84 40,000 5.538
5,000 24.89 45,000 4.355

10,000 20.58 50,000 3.425
15,000 16.88 60,000 2.118
18,000 * 14.94 100,000 0.329

* This is almost exactly one-half the sea-level value.
To convert in/Hg to psi, multiply by 0.491.

It is interesting to note that the pressure drops to one-half its sea-level value at about 18,000 feet. The implication is that one-half of all the mass of the atmosphere lies below this altitude. Further, almost (but not quite) a third of the total lies below 10,000 feet. On the other hand, more than one-fifth of the total lies above 35,000 feet.

KAIMIKAZEE · Joined: 18 Sep 2005 Posts: 133

thanks for the educational chart :lol:

what i need to know is...if i ignore the CEL knowing what the code read will it cause any damage to my motor or anything else....

if it's like a bad oxygen sensor in a car i could care less....

possum squat · Joined: 21 Jul 2006 Posts: 50

possum squat doesnt know the answer, really.
he only wants to learn something here.

so the compressor you changed was a part of fuel/air system, or brakes or what?

I guess that the pump being "different" might be fooling the sensor. I mean you changed it and got the same response. a sensor (or the computer actually) will look for say 0.0005 psi and if it aint there it will send a code.... now maybe your pump is to blame for out of spec reading not the sensor(s).

See what I mean, I am a blithering idiot.

inquiring minds want to know

possum squat · Joined: 21 Jul 2006 Posts: 50

and then, there is always the possiblity of an open circuit too.

bob h · Joined: 15 Oct 2006 Posts: 668 Location: Nb

possum squat wrote: CEL = check engine light
CAT = can of tacos ?

In am not sure what pump you were talking about. Try to tolerate my ignoramusness.
Heres some thing to think about:
Baro. pressure or atmospheric pressure varies with elevation ( and other things)
So,
One gallon of water weighs 8.34 pounds. One gallon of gasoline weighs about 6 pounds.

1 psi corresponds to 27.68 inches water column or about 37 inches of a column of gasoline.

Atmospheric pressure = 14.7 psi = 30 in/Hg = 34 feet of water

Here is a table that gives the atmospheric pressure at various altitudes. The altitude is given in feet and the pressure is in inches of mercury.

Altitude Pressure Altitude Pressure

0,000 29.92 20,000 13.75
1,000 28.86 25,000 11.10
2,000 27.82 30,000 8.886

3,000 26.82 35.000 7.041
4,000 25.84 40,000 5.538
5,000 24.89 45,000 4.355

10,000 20.58 50,000 3.425
15,000 16.88 60,000 2.118
18,000 * 14.94 100,000 0.329

* This is almost exactly one-half the sea-level value.
To convert in/Hg to psi, multiply by 0.491.

It is interesting to note that the pressure drops to one-half its sea-level value at about 18,000 feet. The implication is that one-half of all the mass of the atmosphere lies below this altitude. Further, almost (but not quite) a third of the total lies below 10,000 feet. On the other hand, more than one-fifth of the total lies above 35,000 feet.

wth?

bob h · Joined: 15 Oct 2006 Posts: 668 Location: Nb

KAIMIKAZEE wrote: well my CEL kept going on even after i changed the sensor that CAT noted i should change.

any clues to why the code is reading "BAROMETRIC PRESSURE HIGH"

could it be serious if i left the CEL on...

no change in power or anything....

i got the code when i changed my air compressor... it wasn't specifically the one for the motor but it fit according to the shop that installed it..

anybody have the same problem????

baro signal fault will ignore the sensor, thus no change in performance

signal voltage from the baro sensor is NOT affected by compressor operation... unless you've pulled a harness connector apart.

check your connectors for damaged pins/terminals. you need to test the sensor connector for supply voltage, return, and signal. do you have the fault code #?

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