Page 1 of 1

Electrical issues 2005 Ford Freestyle

Posted: Sat Sep 15, 2018 10:04 am
by Jmadams71
Howdy. I recently bought a 2005 Freestyle and it ran great the first 4 days. The battery light would not turn off so I bought a new battery. Few days later the car died again. I changed the alternator with an aftermarket one from Advance. 5 days later it died again. I have check the wiring and all the grounds are good and the cables appear to have no tears or melting at all. Trying to figure out what else may cause the issues of the car just dying on the road. I wanted to change the PCM but it seems there are two of them. The ETC is good. I was told there is an ECM but cant find one anywhere even in the Ford manufacturer electrical manuals. Any ideas would be great.

Re: Electrical issues 2005 Ford Freestyle

Posted: Tue Sep 18, 2018 7:41 am
by rtg143
Are you getting any codes? O'Reily's and Autozone will check for free.

Re: Electrical issues 2005 Ford Freestyle

Posted: Tue Sep 18, 2018 10:10 am
by Jmadams71
I am working on it now and When i disconnect either terminal on the battery the car dies.

The codes I have are:

B1318
B1596
C1165
U0415
U0101
P0562
P0113
P0622

I have a new battery. New Alternator. Dont know if the TCM would cause this or not.

Re: Electrical issues 2005 Ford Freestyle

Posted: Tue Sep 18, 2018 1:02 pm
by Smc_45
I’ve had a similar issue. We bought our 05 a couple of years ago. The battery light came on soon after our purchase, but the car always started right up. We took our car in for an oil change and were told that the alternator was bad. But, it was still charging the battery so we sat on it. Every person we took it to would advise us to get a new alternator. Finally, this summer we decided to change it out. As soon as we got it back, the dash went out, then it stopped running. Took it back in and had a new alternator installed. Same story: broken down within 2 days. The mechanic changed it out again, but held on to the car and drove it around a bit. Long story short, he put 8 different alternators into it - all of them fried out. He took it to the dealership where they declared it a PCM issue and told me it would be $1800 to get it replaced - also, the service manager told me it was 50/50 that the new PCM would fix the issue. My mechanic tried to get a different alternator (for an early 00s Taurus) to see if he could work something out, but the bolt pattern is not the same. Well, the PCM thing kind of totals the car for us... sucks as it was great before we tinkered and we just bought new tires and had the rear brakes done.

If anyone wants to pick this guy up for some sweet parts (transmission is good, new tires, new rear brakes), let me know.

Re: Electrical issues 2005 Ford Freestyle

Posted: Tue Sep 18, 2018 1:12 pm
by Jmadams71
yea I just had the alternator tested. Its good. I haven't removed the PCM and if I did I wouldn't know how or if you can test it. I was told a bad ground or a short ground would also cause these issues.

Re: Electrical issues 2005 Ford Freestyle

Posted: Wed Sep 19, 2018 2:24 pm
by CARR142

Re: Electrical issues 2005 Ford Freestyle

Posted: Thu Sep 20, 2018 10:26 pm
by xvert
A bit of theory:
-PCM uses an air temperature sensor to adjust the voltage of the generator. Therefore, it may be necessary to replace the mass airflow sensor.
- Sometimes the contacts on the back of the Battery Junction Box are oxidized. It is necessary to remove the BJB and check contacts of fuse F1.18 and also check connectors c102a, c134, c139. The condition of the wires is very important, because PCM uses pulse-width modulation to control the generator. A normal ohmmeter may not detect a bad contact.
Screenshot_20180920-182251.png
Screenshot_20180920-182251.png (153.81 KiB) Viewed 468 times