ripp jk map sensor

[Andy25]

looking at the data logger my map reading is 15 psi without being on and drops to 4 psi at idle. It doesnt even go into the negs. would that indicate a high resistance or faulty map sensor? could someone please tell me what data values i should be expecting and what pids i could bring up. i tried to find map volts but no such luck

thanks

[mikel]

thats normal, 15 psi is atmospheric pressure, it drops when there is vacuum in the manifold...

[Andy25]

thanks mate.
Ill have to keep looking