Boost gauge sticking!
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Senior User
Joined: Sep 2004
Posts: 238
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From: Derby Country
Boost gauge sticking!
I've had my new gauges in for about 4 days now and my boost gauge hasn't worked right since install. I replaced my old ultra lite's with the cobalt series to match my new dash cluster. Problem now is the freakin boost gauge kinda hangs about 5 or 10 psi then lauches to about 26. I don't know if it's the gauge or the line or what. I took it off and blew through the line with my compressor and it didn't hang. Blew through the fitting on the back on the gauge and it didn't hang. So I'm confused as to why it's sticking when it's hooked up. I've got it hooked into my AIH delete plug now and before it was in the MAP hose. I don't think that would have anything to do with it. Any help would be appreciated.
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
somtimes my gauge sticks too. its because at the inlet to the actual compression fitting on the sender, the hose is a little kinked. it usually only sticks on the first time i build boost. i can be going along pretty good, the gauge is set down on 0, and then it jumps to 10 or so and i think "wow thats some fast spoolup 
"
i guess its just the nature of the mechanical gauge. dont know what much more to say...
"i guess its just the nature of the mechanical gauge. dont know what much more to say...
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Senior User
Joined: Sep 2004
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From: Derby Country
I hear ya Kris. From what I know a electric gauge would've only shown 24 psi. That's why I went with another mechanical. I might be completely wrong about that and if I am someone please correct me. My air line isn't really kinked at all though I made sure to leave plenty of slack so I didn't bend it much. Who knows what's going on. I started to send it back but I'm not sure that there's anything wrong with it.
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
An electric gauge should show more than 24 psi. Unless it's reading from the MAP sensor, which will only read as high as 24 psi. The electric ones tend to not be as responsive or smooth as the mechanical gauges though.
My first thought is a bad gauge. I know you said it doesn't hang with the compressor on the line, but does it read the correct pressure? Dial your regulator on the compressor down to about 15-20 psi and see if the gauge matches. If it does, then the gauge is probably ok. After that, I'd check the connections to be sure they're not binding or pinched somewhere.
My first thought is a bad gauge. I know you said it doesn't hang with the compressor on the line, but does it read the correct pressure? Dial your regulator on the compressor down to about 15-20 psi and see if the gauge matches. If it does, then the gauge is probably ok. After that, I'd check the connections to be sure they're not binding or pinched somewhere.
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Senior User
Joined: Sep 2004
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From: Derby Country
I tried all of that and everything seems fine. I just took another test drive and if I pick up on the line just a little it's working. It's not in a bind or anything though. Oh well I think I'll get a new piece of air line tommorrow and see what that does. Thanks fo all the help guys.
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