Had a 2013 Chevy Equinox with a code p0191 fuel pressure performance. it would set with engine off and put the car into reduced power mode. turned out to be a bad exhaust cam sensor putting out a signal after about 10 to 15 minutes after shutting the engine off. when the problem would happen, could see it on my scope, also on scanner, cam rpm would be ranging from 0 to 50 rpm. replaced the sensor and the car was fixed. just looking for a little input on issues such as this. I put it on the TechHelp a couple weeks ago so all the details are there. and going to try to add scope captures.

[2013 Chevrolet Equinox LS, ECM/Inputs/Outputs Waveform] [2013 Chevrolet Equinox LS, ECM/Inputs/Outputs Waveform] 97932 [2013 Chevrolet Equinox LS, ECM/Inputs/Outputs Waveform]

Robert Dorlaque
Technician
Arch St Tire and Service Center
Little Rock, Arkansas, USA

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