fuel pressure tranducer hookup

[luisturbog]

can anyone tell me how to hook up the fuel pressure transducer; I hooked mine up and i'm getting 85 #'s and analog gauge says 45. I have a power logger that is set on the pressure b.

[Jbenn911]

is it Caspers transducer ?? or one that came with Analog ?? Mine was an Autometer and I simply tapped the purple wire and set Analog 4 to 100..IIRC you are correct in that the Caspers goes on the 100b(being that caspers is 1-5v linear, unlike mine which is 0-5v) setting.... Other than that, just make sure you have good power and ground(A&B connectors)...All else fails post up on FT's forum.. Bob is always around to answer

[luisturbog]

Originally Posted by Jbenn911

is it Caspers transducer ?? or one that came with Analog ?? Mine was an Autometer and I simply tapped the purple wire and set Analog 4 to 100..IIRC you are correct in that the Caspers goes on the 100b(being that caspers is 1-5v linear, unlike mine which is 0-5v) setting.... Other than that, just make sure you have good power and ground(A&B connectors)...All else fails post up on FT's forum.. Bob is always around to answer

it is the autometer transducer. I do not understand this in you post though (100..IIRC) I tried putting it on the 1st pressure setting analog 4 and it just maxes out at 100 #'s is there a download that i need? I saw on ft that they have some downloads for pl but don't know if one applies. Please advise.

[Jbenn911]

Same as mine then.. It should be on "Pressure 100psi" "Pressure 100psi-b" is for the Caspers sensor(different voltage output)..You did tap just the purple wire from the sender and no other wires off the AM unit, yes ? I'm not sure what version of the software you have, but getting the latest version cant hurt..I did not have to adjust anything when I hooked my AM up...

edit: you can also check your voltage to see if it's calculating correctly..0.5v = 0 psi and 4.5v = 100 psi....

[luisturbog]

Originally Posted by Jbenn911

Same as mine then.. It should be on "Pressure 100psi" "Pressure 100psi-b" is for the Caspers sensor(different voltage output)..You did tap just the purple wire from the sender and no other wires off the AM unit, yes ? I'm not sure what version of the software you have, but getting the latest version cant hurt..I did not have to adjust anything when I hooked my AM up...

edit: you can also check your voltage to see if it's calculating correctly..0.5v = 0 psi and 4.5v = 100 psi....

ok everything is done and i notice that in the selection screen it shows (.300) somewhere in that range but it is not showing up on data screen.

[Jbenn911]

Where are you seeing the .300(listed in the voltage section??) ??? is that with key off ? or on ?? that would help explain why your readings are off.. Here's are 3 screen captures.. first is key off..2nd and 3rd are with engine running...shows the voltage and the fuel pressure...

[luisturbog]

actually it is with the car running. it is 000 when car is off.

[luisturbog]

the gauge pegs out at 100 psi when the car is running.
shows a full 5v on download screen.
I don't know; do you have your gauge hooked up, or do you only have the sending unit hooked up?

[luisturbog]

Originally Posted by Jbenn911

is it Caspers transducer ?? or one that came with Analog ?? Mine was an Autometer and I simply tapped the purple wire and set Analog 4 to 100..IIRC you are correct in that the Caspers goes on the 100b(being that caspers is 1-5v linear, unlike mine which is 0-5v) setting.... Other than that, just make sure you have good power and ground(A&B connectors)...All else fails post up on FT's forum.. Bob is always around to answer

Do you happen to remember the part # on the transducer you used?

[Jbenn911]

I have the guage hooked up in the car still.. I just tapped into the purple wire.. I dont recall the # for the sending unit, it's the Autometer #3363 gauge set....I just checked the autometer site, and its #2246 for the sending unit.. MAKE SURE ITS NOT THE 2245 or 2239 sender that you have.. they are 15 and 30psi senders

[Boost231]

im going to be buying one of caspers Pressure Transducer and i was wondering where can i get a pig tail for it so i can atleast have a nice connection with some wires coming off of it to work with. also how are you guys attaching this device to the fuel rail?

[Jbenn911]

Casper probably has them, or can tell you.. I used one off another car to test out the oil PSI I had...I have mine attached to the fuel rail with this adapter I got from Kirbans a while back..It came with his FP gauge kit..

[Boost231]

thanks. i figured caspers would hook me up. i just need to give them a call

[luisturbog]

Originally Posted by Boost231

im going to be buying one of caspers Pressure Transducer and i was wondering where can i get a pig tail for it so i can atleast have a nice connection with some wires coming off of it to work with. also how are you guys attaching this device to the fuel rail?

Yeah! I got my pigtail from caspers. They don't list it; but they got it.