Adding Fuel Pressure to EBL
09-29-2022, 09:44 PM
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Car: 92 Camaro RS
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73 Truetrac
Adding Fuel Pressure to EBL
Is there some where I can get 5v to use a linear pressure sender?
09-30-2022, 12:50 PM
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Car: 92 Camaro RS
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Axle/Gears: 3.73 Truetrac
09-30-2022, 02:16 PM
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Re: Adding Fuel Pressure to EBL
The Honeywell MLH series with the 5V P/S typically draw 4 ma. Not much at all, so figure we can get away with that. The PX3 series even a little less at 3.5 ma.
Once beyond a single sensor, what we have done is to go to 12V sensors. Lose the ratiometric reading to the ECM supply, but they are still accurate enough.
RBob.
09-30-2022, 02:27 PM
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Car: 92 Camaro RS
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73 Truetrac
Re: Adding Fuel Pressure to EBL
Due to the current draw, the ECM can only supply so much power to the reference line.
The Honeywell MLH series with the 5V P/S typically draw 4 ma. Not much at all, so figure we can get away with that. The PX3 series even a little less at 3.5 ma.
Once beyond a single sensor, what we have done is to go to 12V sensors. Lose the ratiometric reading to the ECM supply, but they are still accurate enough.
RBob.
The Honeywell MLH series with the 5V P/S typically draw 4 ma. Not much at all, so figure we can get away with that. The PX3 series even a little less at 3.5 ma.
Once beyond a single sensor, what we have done is to go to 12V sensors. Lose the ratiometric reading to the ECM supply, but they are still accurate enough.
RBob.
Thanks RBob!
Do you happen to have any recommendations for 12 volt version? They seem harder to find.
Thanks.
10-03-2022, 07:41 PM
#7
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Re: Adding Fuel Pressure to EBL
I just added a Honeywell fuel pressure sensor, the one that RBob recommended. I elected to add a fused 5v power supply circuit to allow for adding more sensors down the road. Used this box since I could mount it in the engine compartment.
https://www.amazon.com/gp/aw/d/B08B4M1LXM?psc=1&ref=ppx_pop_mob_b_asin_title
Seems to be working well about 6 months in now.
https://www.amazon.com/gp/aw/d/B08B4M1LXM?psc=1&ref=ppx_pop_mob_b_asin_title
Seems to be working well about 6 months in now.
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