My 2005 Ford Focus died while I was driving it recently. I tried to restart the car and nothing happens when I turn the key to the start position and the odometer has dashes across it instead of the mileage. I took it to the local dealership and they are telling me that it is the transmission control module and want 1400 for parts and labor, so I am trying to find one and do it myself. The question I have is what is the location of the TCM? I have tried to find out online with little help. I am thinking that it is on the firewall behind the glove compartment. What, if any, issues am I going to run into doing it myself?
The tcm is part of the Powertrain Control Module (PCM). it is located behind the glovebox and the trouble you will have is the module will need to be reprogramed to your VIN specific vehicle and keys programmed
SOURCE: 2000 ford focus.car won't start
The first thing you should do is remove the cables from the battery and clean both the clamps and the battery posts until the surfaces look bright.
I apply a protective coating before I replace the cables but it's not necessary to find out if you have found the problem. After you tighten the battery clamps, try to twist the clamp with your hand. If it moves it is not tight enough.
I've often see cars with battery post to small for the clamps.
If it's loose and you can't tighten it any more, you can purchase lead cups that fit over the post.
Remove the clamp and back the nut up as far as it will go, then use a screw driver to spread the clamp. Put the lead cup over the post and press the clamp down until the post is flush with the top of the clamp and tighten it.
SOURCE: 2003 Ford Focus ZXT
Oxygen sensors do go bad, but having the code there doesn't necessarily mean a bad sensor.
In your case P2195 means your front oxygen sensor (on the exhaust manifold) read a lean mixture for more than 25 seconds on 2 consecutive drive cycles (2 times you turned your engine on, then off).
Ford does have a service bulletin out for that code and the code usually indicates you have a vacuum leak somewhere around the engine.
If your car drives well, I wouldn't worry about it right now. It's not a condition that will leave you stranded in any way, the worst that can happen is decreased fuel mileage.
I'd run the car for a while and see if the light comes back on, and if it does, how often. It may never light up again. If it does light up, and/or if you notice any increased fuel consumption, erratic idle (engine feels like it wants to stall at idle), or any other driveability issue, i'd start by looking for a vacuum leak before anything else...
Other possible causes could be
-Bad Oxygen sensor (possible, but i wouldn't jump to this)
-Bad injector(s) (unlikely, you'd probably notice in the way the engine runs)
-Fuel pressure issues (you'd notice this too)
-Bad engine computer (very unlikely)
A vacuum leak can a lot of times be pin pointed easily:
Start the engine and let it idle. Get a propane torch (the kind used to solder plumbing pipes) and open the gas valve slightly (without lighting the torch). Pass the torch around vacuum lines and connections (they run from the intake/throttle body to the transmission, brake booster, PCV valve etc...) When the torch comes around where the leak is, the engine speed will increase noticeably.
There are pumps available to check for this but I find this method to be quite easier, cheaper and more reliable.
SOURCE: 1995 ford taurus 3.0l v6 wagon no spark.
Listen TFI module is more than likely the problem change it. TFI module controls spark and timing and fuel. Keep one with you in the car. The module is getting hot and not working right.
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