V6 (1994-2004) MustangsTechnical discussions on the 3.8L and 3.9L V6 torque monsters Sponsored by Optima Batteries
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I have heard somewhere that if you unplug the MAF sensor your car should die, is this true? If not, is there a way to test this? I will also double check my spark plugs. I made sure they were capped correctly before installation but will check again.
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The error code is P0306. That's the only code given on the OBD2 reader. I unplugged my MAF sensor and the car still runs. I need to rerun my code reader to see if the same error code will pop up, but I can't run codes until tomorrow. So I'm hoping the new plugs, wires, and coil have fixed the cylinder 6 misfire and that the MAF sensor is my culprit.
One edit to my above post, unpluging the MAF will not cause the car to not run, it will run as at idel the ECU is preset to run at a idel however it would be unable to run properly under load.
Ryan and I listed the most likely fixes for that code. However I did look up the code specifically and here is the list of solutions:
Faulty spark plug or wire Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
So if it was doing this before and after the head gasket fix you can knock off a few things. You said you did the plugs, wires, and pack, so that's a check on that one. I mentioned the O2 sensors which I believe to be the likely area with the first three out the way.
Burned exhaust valve is very possible if you didn't have the heads fully inspected.
Faulty cats are possible, however you would usually get other codes from the O2s.
You're obviously not out of fuel so ignore that one.
You ran compression so you know it's not that.
Defective computer is extremely unlikely, I would still put the blame on all the other things I listed, on and not on this list, before I'd think the ECU. As stated the ECUs only go out of they're hit, dropped, or get wet. Very rarely do they ever short or have a circuit failure. It's possible but very unlikely.
One thing just popped into my head. You may want to look over your connections very, very carefully. I'd also go as far as to replace the spark plug wire (or swap the wires with cylinder 5) to see if the issue jumps.
Reason I say this is you could have just gotten a bad wire right out the pack. Do the same with the spark plugs just to test.
Also look over the harness and more specifically the plug that plugs into the fuel injector on cylinder 6. Look for any exposed wire, pinching, or any other sign of damage. Basically if the harness is damaged by that fuel injector connector it could be causing the problems. Very unlikely but something to look at.
So I ran my codes and am getting the P0306 and a P0113.
I went out to my car last night and was looking over wires, when I shut down my light and someone started the car I noticed a spark that I couldn't see during the day. I started wiggling the spark plug wires while the car was running an it would spark as soon as it touched anything else. So I'm assuming by this that I was given a faulty wire and am going to take this set back. I did some research and think that I'm going to upgrade to a performance set.
2001 Satin Silver Mustang V6
BBK Power Plus 70mm throttle body
Mac cold air intake
MAC long tube headers
MAC off-road H-pipe
MAC true dual exhaust
American Racing 5 spoke
Nexen N3000 255/40ZR17 tires
MAC white face gauges
Cobra front end
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