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Damn STS Buzzer

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Old 02-11-2007, 06:06 PM
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Default Damn STS Buzzer

We'll I just put in my T76 and turned the boost up to 12 lbs. My tuner decided to raise the rev limiter to 6700 to help keep in the power band with the bigger turbo. After we got it tuned I took it on the road and noticed the STS buzzer was going off at the higher rpm's, what boggles me is that it just started doing it once we turned the boost up? Does anyone have an idea what the problem might be
Old 02-11-2007, 06:15 PM
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At the return pump, there is a Hobbs switch. Take the rubber cover off and ther is a small dime size plug at the top. Inside there is an Allen head fitting. Get an Allen wrench and turn it clock wise one turn. Go drive it and see if the buzzer quits going off. If not, turn a little more.
Old 02-11-2007, 06:56 PM
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Originally Posted by trtturbo
At the return pump, there is a Hobbs switch. Take the rubber cover off and ther is a small dime size plug at the top. Inside there is an Allen head fitting. Get an Allen wrench and turn it clock wise one turn. Go drive it and see if the buzzer quits going off. If not, turn a little more.
Pure curiosity, what does that do? Desensitize the oil warning system, or allow for more flow in the pump? I've spent a lot of time figuring out my STS (wiring and what each relay controls, how the PCV system works, etc) ...and this is a new one for me.
Old 02-11-2007, 07:27 PM
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Hey there, don't mean to change the subject, but what kind of numbers did you put down with the T76? You're setup isn't far off from mine, I just don't have the fuel done yet.
Old 02-11-2007, 07:39 PM
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Originally Posted by Schantin
Pure curiosity, what does that do? Desensitize the oil warning system, or allow for more flow in the pump? I've spent a lot of time figuring out my STS (wiring and what each relay controls, how the PCV system works, etc) ...and this is a new one for me.
When too much pressure builds up in the return, it triggers the buzzer to go off. Basically, when pressure reaches the point where the switch is set, it sets it off. The pressure is adjustable.
It doesnt change flow.
Old 02-11-2007, 09:43 PM
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Originally Posted by trtturbo
At the return pump, there is a Hobbs switch. Take the rubber cover off and ther is a small dime size plug at the top. Inside there is an Allen head fitting. Get an Allen wrench and turn it clock wise one turn. Go drive it and see if the buzzer quits going off. If not, turn a little more.
Is the hobb switch the one that is attached to the sts oil pump in the back of the car?
Old 02-11-2007, 11:00 PM
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Originally Posted by NYSS Guy
Hey there, don't mean to change the subject, but what kind of numbers did you put down with the T76? You're setup isn't far off from mine, I just don't have the fuel done yet.
Somewhere in the mid 600's. I should have official numbers next week sometime.
Old 02-11-2007, 11:27 PM
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Originally Posted by JD_Z28
Is the hobb switch the one that is attached to the sts oil pump in the back of the car?
yes it is
Old 02-12-2007, 01:14 AM
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Originally Posted by trtturbo
yes it is
I tried turning it one rotation and it fixed it some, now it only does it at the higher speeds. I'm guessing I should turn it another rotation?
Old 02-12-2007, 12:58 PM
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Originally Posted by trtturbo
When too much pressure builds up in the return, it triggers the buzzer to go off. Basically, when pressure reaches the point where the switch is set, it sets it off. The pressure is adjustable.
It doesnt change flow.
Thanks. BTW, plans for dropping the car off in June are still on.
Old 02-12-2007, 02:40 PM
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Originally Posted by trtturbo
yes it is
Thanks for your help Billy. Sorry but I got cut off earlier when I was talking to you on the phone
Old 02-12-2007, 08:17 PM
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Yep, you just hung up on me. j/k
glad I could help.
Old 02-12-2007, 08:19 PM
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Originally Posted by trtturbo
Yep, you just hung up on me. j/k
glad I could help.
No reception where I work at Thanks again
Old 02-12-2007, 09:54 PM
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ya I know. I hated that buzzer when I had my STS kit on. No matter how much I turned the hobb switch, at 18+ lbs that buzzer would keep going off
Old 02-12-2007, 10:02 PM
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Originally Posted by 8ALTNG
ya I know. I hated that buzzer when I had my STS kit on. No matter how much I turned the hobb switch, at 18+ lbs that buzzer would keep going off
18 lbs How much power was that thing making?
Old 02-13-2007, 11:04 AM
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Originally Posted by JD_Z28
18 lbs How much power was that thing making?
well.....it was on a 4.8 liter. I made 540rwhp through a 4l80e.
Old 02-13-2007, 11:05 AM
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Originally Posted by 8ALTNG
well.....it was on a 4.8 liter. I made 540rwhp through a 4l80e.
Noice numbers



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