Std Boost Gauge

[Pulp]

Wondering if anyone could tell me if this is anything to worry about.

The last couple of days I've noticed when starting the car the standard boost meter needle in the instrument panel goes straight up till almost the '0' level and stays there. When driving if you put your foot down eventually the needle will move hight acording to how much boost etc. But will always go back down to just under the '0' level.

Also I have an aftermarket boost gauge installed and it too I've noticed is stitting high than normal!

I'm not sure what's going on, I don't think it's the std meter playing up as the aftermarket gauge is doing the same thing. I've checked the lines and all seems fine.

Any help would be appreciated.

Cheers!

[mitchy_]

any loose hoses or anything?

sounds like its not recording the vacuum pressure when off boost..

as if something were leaking and causing it to stay at no positive/negative pressure.

[Pulp]

any loose hoses or anything?

sounds like its not recording the vacuum pressure when off boost..

as if something were leaking and causing it to stay at no positive/negative pressure.

From what I could see the hoses were ok, unless they are slighty leaking! I'll have to go over them again and look a little closer.

[mitchy_]

is your other boost guage mechanical, or electrical?

im pretty sure the standard one is eletrical, and runs off a sensor up the veeeery far left of the engine bay.

[Pulp]

Yeah I've seen the sensor, the new gauge is mechanical. I'm starting to think it may be the sensor, I'm sure the new gauge never started that high though!

[KeeFy]

if the aftermarket one is mech, then it should be reading the right boost values i think?

[mitchy_]

yeah, thats why it sounds like a leak.

if its reporting slightly higher than usual, but still at a vacuum, it means that there is slightly more pressure inside the plenum, ie there is position pressure leaking into it..

is it idling any higher? butterfly may be slightly more open..

apart from a leak, both a mech. and elec. guage raising has me baffled.

[_8OO5TED_]

my Autogage did the same, it was a split line causing a leak. double check all lines again dude.

[ix9]

*raises hand*

Split vacuum hose there Dave - mine did the same - replaced the hose, fixed!

[Pulp]

Thanks ppl! I'll check tonight, haven't had time today!

Can I use similar hose as the aftermarket gauge to replace the standard black hose that's there? seems very hard to take off from what I remember!

[Pulp]

YEP! split on BOTH sides!! I taped it up for tonight and it fixed it straight away! will have to buy some hose from somewhere soon.

Any suggestions were's good place to try?

[ossie_21]

Any autoshop should have it, Auto1 etc, that's where I got mine from for my gauge. You pay by the foot.

Your real foot. They cut it off and everything.