Car bogs down and dies when given gas (Page 2/2) Patrick AUG 15, 04:18 PM quote Originally posted by lafemmefiero73: It sounds like the next step in testing would be to unplug the wire to the MAP sensor to see if the reading changes, and if it does that would indicate the wiring is fine? Possibly. Here's my thoughts on doing this with low fuel pressure. I don't know if/how it applies to normal fuel pressure, but heck, see what happens. quote Originally posted by Patrick Here: With the MAP connected, it appears the ECM reduces the amount of fuel that the injector is spraying... even though the end result (due to the low fuel pressure) is that the engine starves. I suspect the ECM is designed to work within a defined range of fuel pressure, and can't correctly cope when the pressure falls below a minimum level. This is all conjecture on my part as I understand very little about EFI. Steel AUG 15, 05:08 PM I'd rule out a plugged catalytic converter. lafemmefiero73 AUG 16, 09:05 PM Thank you! It has a newer CAT. I took apart the EGR valve, and the diaphragm and springs seemed in good shape and held the spring tension when I plugged the outlet line. Also, I started the car with the MAP sensor unplugged, and it started and immediately died. Next, I started the car with the MAP sensor plugged in, but the vacuum line to the sensor disconnected. The car idled very rough for about 10 seconds and died. Does that mean the MAP sensor is ok, even though the voltage readings weren't changing? What do you all think next? lafemmefiero73 AUG 17, 09:22 PM I put an extra ground strap from the engine to the chassis because the resistance was around 175 ohms, which was way too high. The original one was very corroded. After that, all of the engine codes I was getting (throttle position sensor too low, MAP sensor voltage too high and too low, and EGR failure) were cleared, and just the EGR code remained. I put the original stock EGR back on, and that seemed to help. Then, when I pulled out of the garage, the oil pressure dropped and it died. I added oil, and that helped, but the oil pressure kept dropping to like 5 psi every time the car bogged out. I didn't notice that when the car bogged out before, but that may have been because the engine wasn't grounded well so the gauge wasn't as accurate. Visigoth87Fiero MAR 12, 04:27 PM Torque convertor clutch solenoid on a 3 speed automatic . Patrick MAR 12, 04:55 PM We last heard from the OP on 08-17-2020. I guess we'll never know the eventual outcome.