PLEASE HELP | Loss of Power to dash/internals (2007 Ford Focus SE)
Please try and help me, I've been trying to fix my car for days and I have no idea what might be wrong. I need to be able to drive to get to work and have no other options.
My car is a 2007 Ford Focus SE
So, about a week ago I noticed the check engine light came on in my car. I went to O'Reily's that day to see if I could figure out what the problem was. He checked it and it said the engine is running lean so I needed to clean the Mass Air Filter Sensor and the filter. I wasn't able to get to cleaning it until 4 days later. On day 3 I was driving, but the A/C was blowing at about half power. Then the Stereo died, then finally the dash went totally dead. The car would not start again once I got home and turned it off, but I tried again about an hour later and it started fine. Check engine light was still on.
The next day I got under the car and cleaned the MAF sensor but was unable to get to the filter. I started the car okay, but the engine light was still on and the car would still lose power. I then checked the battery and found it was at 11.4 Amps, 35% capacity. So I charged it and it still was having issues. This morning I then cleaned all the corrosion off of the battery and terminals, and started her up.
The check engine light had now gone off and the car was running just fine.
I thought I solved it so I went to a friend's grad party, no issues while driving with stereo blasting and AC at full power.
I start it up again and on the way home, the same kind of loss of power happened. Only in addition to all the interior losing power, the car started jerking as their was a kind of clunking sound coming from the engine (It sounded like the transmission was having trouble shifting to different gears as I slowed down, then sped up again)
I think it might be an issue with one of four things
1. the MAF sensor filter, as I was able to clean the sensor but not the filter itself. However the check engine light also turned off after cleaning the battery terminals, so I don't know.
2. The battery, I charged the battery as it was running at 11.4 amps and I charged it up to about 12.8 Amps, I took it to O'Reily's and had it checked but they said it was a good battery, and I didn't need it replaced.
3. The alternator, due to loss of power after the car running for a while I think it might be that, as it would explain the power loss after the car had been running.
4. Fuel pump? I went to a home depot yesterday (before I cleaned the MAFS and the addressed the battery issues) to get a tool I needed to clean the MAF sensor and I told the guy about what was happening. He said he used to work on cars and what it sounds like is a fuel pump issue. I hope it's not that.
PLEASE let me know if you have any idea what it might be, I need to get my car fixed and I'm desperate because I need to get to work.