Datnastybrat Posted May 22, 2019 Share Posted May 22, 2019 My stock turbo gauge is pegged at max as soon as i turn the car on. I want to try and see if I can replace the boost sensor if it even has one. Anyone know where it's located? Link to comment Share on other sites More sharing options...
carfreak85 Posted May 22, 2019 Share Posted May 22, 2019 I think it's on one of the strut towers under the hood, but look in the EA81T FSM supplement, it'll show you where it is. (You buy the black and blue turbo brat in TX?) Link to comment Share on other sites More sharing options...
naru2 Posted May 22, 2019 Share Posted May 22, 2019 Its on the firewall. Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 22, 2019 Author Share Posted May 22, 2019 2 hours ago, carfreak85 said: I think it's on one of the strut towers under the hood, but look in the EA81T FSM supplement, it'll show you where it is. (You buy the black and blue turbo brat in TX?) Yes that's the one I bought. I've tried looking for that fsm, have a link? Link to comment Share on other sites More sharing options...
Steptoe Posted May 22, 2019 Share Posted May 22, 2019 Stock turbo gauge pegged at max .... My EA82T series one was sort of a follow on to EA81 and did not come with a gauge - only a light on dash that would light up at about 2 psi and stay on while boosting. Gave me no idea if I was between 2 or 12. Did turbo Brats get a boost gauge with a dial and needle? Follow vacuum lines from intake manifold and you should find it Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 22, 2019 Author Share Posted May 22, 2019 This 84 Brat ea81t came with it Link to comment Share on other sites More sharing options...
Steptoe Posted May 22, 2019 Share Posted May 22, 2019 And then the bean counters came along for my GLTA ! Well the EA82T had a pair of solenoid like switches on the strut tower. One to trigger light, other for overboost ecu cut out. Wonder if you got cut out? If so vacuum must go to two devices same location with a T piece in vacuum line. Thanks for the quick pic 1 Link to comment Share on other sites More sharing options...
Steptoe Posted May 22, 2019 Share Posted May 22, 2019 (edited) Just noticed you have wiper switch where our RHD have light switch! Your tacho and gauges look very much like our EA82 stuff. Our temp gauge and fuel gauge just had lines no colour or shading Edited May 22, 2019 by Steptoe Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 22, 2019 Author Share Posted May 22, 2019 Here's some pictures, maybe someone can clarify. Sorry I'm new to the subies. https://photos.app.goo.gl/CjXyFqEg6ghMwTG37 Pictures too large to post. Link to comment Share on other sites More sharing options...
naru2 Posted May 22, 2019 Share Posted May 22, 2019 Mine is on the firewall beside the RH hinge, It says "boost sensor" on it. 1 Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 23, 2019 Author Share Posted May 23, 2019 5 hours ago, carfreak85 said: I think it's on one of the strut towers under the hood, but look in the EA81T FSM supplement, it'll show you where it is. (You buy the black and blue turbo brat in TX?) Yes I bought that one 1 Link to comment Share on other sites More sharing options...
Crazyeights Posted May 23, 2019 Share Posted May 23, 2019 4 hours ago, Datnastybrat said: Yes I bought that one Congratulations! Link to comment Share on other sites More sharing options...
el_freddo Posted May 23, 2019 Share Posted May 23, 2019 Hmmm... I want that turbo gauge! What are the other gauges on the other side of the dash? Our Aussie units have volts, temp, fuel level and oil pressure. And of course tacho and speedo in the middle part. Cheers Bennie Link to comment Share on other sites More sharing options...
Steptoe Posted May 23, 2019 Share Posted May 23, 2019 4 hours ago, el_freddo said: Hmmm... I want that turbo gauge! What are the other gauges on the other side of the dash? Our Aussie units have volts, temp, fuel level and oil pressure. And of course tacho and speedo in the middle part. Cheers Bennie Just not factory on the Brumby or non touring wagon Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 23, 2019 Author Share Posted May 23, 2019 5 hours ago, el_freddo said: Hmmm... I want that turbo gauge! What are the other gauges on the other side of the dash? Our Aussie units have volts, temp, fuel level and oil pressure. And of course tacho and speedo in the middle part. Cheers Bennie Voltage and Fuel Link to comment Share on other sites More sharing options...
el_freddo Posted May 23, 2019 Share Posted May 23, 2019 45 minutes ago, Steptoe said: Just not factory on the Brumby or non touring wagon Maybe not, but can easily be retro fitted: You might remember those pics Jono - from Sunnie the Brumby’s build. Still going strong! And the gauges are “modular” - they can be removed. Only issue then is how the wiring behind the cluster’s “motherboard” lines up. 24 minutes ago, Datnastybrat said: Voltage and Fuel So you have a total of five gauges and not six as shown above? And I wonder what sort of switch is used to determine how much boost that loose gauge displays, it’d have to be some sort of adjustable resistance type like the oil pressure gauge setup... I think the one Jono talks about is just a switch for a light. Cheers Bennie Link to comment Share on other sites More sharing options...
naru2 Posted May 23, 2019 Share Posted May 23, 2019 The turbo gauge simply replaces the oil pressure gauge in a GL dash.Everything else is the same. The sensor is a semiconducter strain gauge w/a variable voltage output.Hitachi PS 14-01. Mine outputed slightly low voltages last time I tested it resulting in slightly low gauge readings. Seems back to normal now,but,I have not retested. The meter being pegged at the top seems more like a gauge than sensor issue in this case,but,maybe not. The sensor should output between 2.162 to 2.213 volts at atmospheric pressure when powered by 13.5 volts @ 77 degrees F. The gauge should read zero w/this voltage applied. I used a bicycle pump and a vacuum pump to test the system at other pressures. Link to comment Share on other sites More sharing options...
sparkyboy Posted May 23, 2019 Share Posted May 23, 2019 Ok, this is coming from my vault of second gen camaro knowledge...lemme find it. Ok here it is file 3 of 4 but my fuel gauge (77 camaro) was stuck at about 1/4 turn past full no peg or it would have been so! I checked resistance and sweep of the sending unit and all good. It turned out to be a bad ground. Is the sensor bad? Any stinking boost sensor that is close to the resistance of your old one will work, yeah? Maybe just a wonky wire somewhere since it goes back to zero with no key? Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 24, 2019 Author Share Posted May 24, 2019 9 hours ago, naru2 said: The turbo gauge simply replaces the oil pressure gauge in a GL dash.Everything else is the same. The sensor is a semiconducter strain gauge w/a variable voltage output.Hitachi PS 14-01. Mine outputed slightly low voltages last time I tested it resulting in slightly low gauge readings. Seems back to normal now,but,I have not retested. The meter being pegged at the top seems more like a gauge than sensor issue in this case,but,maybe not. The sensor should output between 2.162 to 2.213 volts at atmospheric pressure when powered by 13.5 volts @ 77 degrees F. The gauge should read zero w/this voltage applied. I used a bicycle pump and a vacuum pump to test the system at other pressures. ill be conducting tests on the sensor and if that turns out ok, ill try the gauge. Really wish it was a mechanical gauge and not electric. Thank you for the input. Link to comment Share on other sites More sharing options...
Datnastybrat Posted May 24, 2019 Author Share Posted May 24, 2019 3 hours ago, sparkyboy said: Ok, this is coming from my vault of second gen camaro knowledge...lemme find it. Ok here it is file 3 of 4 but my fuel gauge (77 camaro) was stuck at about 1/4 turn past full no peg or it would have been so! I checked resistance and sweep of the sending unit and all good. It turned out to be a bad ground. Is the sensor bad? Any stinking boost sensor that is close to the resistance of your old one will work, yeah? Maybe just a wonky wire somewhere since it goes back to zero with no key? it has an aftermarket boost gauge on the steering wheel, I don't like it. Its not wired correctly discretely and doesn't seem to be too accurate I think. I want the stock gauges to be in good working order. Link to comment Share on other sites More sharing options...
oczuk32 Posted October 2, 2019 Share Posted October 2, 2019 I getting that issue on my 84 wagon turbo when the interior of the car gets hot. It works in cool interior weather. How much should you rely on the gauge to get good boost readings? Link to comment Share on other sites More sharing options...
el_freddo Posted October 2, 2019 Share Posted October 2, 2019 1 hour ago, oczuk32 said: I getting that issue on my 84 wagon turbo when the interior of the car gets hot. It works in cool interior weather. How much should you rely on the gauge to get good boost readings? You shouldn’t. It’s there to only indicate you’re on boost. If you want accuracy get an aftermarket boost gauge that actually plugs into the intake manifold Cheers Bennie 1 Link to comment Share on other sites More sharing options...
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