Question about Ford Taurus

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1997 a couple of questions #1 what is the function of the black wire that is cliped on to the key tumbler # 2 what is the function of the electronical box to the side of the battery, what all does this control, # 3 i have a black wire that comes out of the main wiring harness under dash that goes through firewall that goes from black wire then sodered to bare wire what does this black wire control. # 4 my main problem whic i dont know if any of the before has anything to do with it but my car wont start it seems like all the accessories are working but the turn signals but the flashers work , the starter works but when i go to start the car there is no power going to the starter what is going on here

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Black wire is always a ground wire but if it was installed later on (from an aftermarket alarm, radio, amp, etc) then it could be hot. Get a multimeter and touch the end of the black wire with the vehicle turned on and see if it has power running through it, if it does have power then tape it off with some black electrical tape untill you figure out where it goes. The box next to the battery under the hood is where all of the relays are located (fuel pump relay, main relay etc) and they look like big square mini boxes when pulled out. Check that your battery cables are firmly attached to the battery and look closly at the red positive battery cable and follow it down to the starter and make sure it is not loose. If your battery cables are good then check your fuse located underneath the drivers side steering wheel. Remove the plastic cover and there will be a diagram that shows what fuse controls what componant, replace the fuse that goes to the starter. If your starter fuse and relay are good then your stater solinoid has failed and you will need to replace the starter or have it rebuilt

Posted on Aug 22, 2010

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.............do not except this answer yet, its a clarification question..........................
what is the model of your car? we know its a 1997 but what? thanks

Posted on Aug 21, 2010

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Posted on Jan 02, 2017

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I have a 1997 Oldsmobile Cutlass Supreme Sl. I have recently been having problems with getting it started. The first time it happened was this past summer. I though it was just the key (PASS KEY 2 SYSTEM)...


your tumbler possibly worn and keys are now not reading or both keys are worn down to where not working correctly ---also ignition switch can be failing

Apr 17, 2017 | 1997 Oldsmobile Cutlass Supreme

1 Answer

1997 CADILLAC DEVILLE ENGINE CRANKS BUT WILL NOT START THE THEFT SYSTEM CODE FLASHES AND READ THE CODE TCS B1750 PASS KEY FAILURE CURRENT THE RESISTANCE OF THE KEY IS 7.5 KOHMS AND THE RESISTOR WAS CUT IN...


On the key there is a diode theat the key connects inside the cylinder lock from the lock cyclinder their is two white wires that thread down the collum to the maim collum connector.here they plug into the main harness. If this white set of wires is broken or cut anywhere or connected to ground then the security system won't let the car start. A new tumber comes with the white wires and the contacts that touch the key. I remove the new contact wire assembly from the old tumbler and install the new on that came with the new tumbler. I don't use the new tumber as I don't have a key with the diode in it thats right for the car. with the old key in the old tumbler with the new wire and contaacts all assembled the car should reconize the key and run like it used to,

Oct 27, 2010 | 1997 Cadillac DeVille

1 Answer

How do i unlock my steering wheel on my 2003 e250 it makes the pinging noise when i open the door but the key is not in it


Assuming your truck starts and runs fine, then the problem id the Key Warning "Switch" It's really not a switch, but just a copper tab that grounds to the key when it is inserted. It either came unseated and is grounding out on the steering colimn, or brole off and is grounding. You can do a couple of things:

Remove the plastic steering column cover to expose the key tumbler

Then, locate the grounding tab. It is at the end of a small black wire.

Then, either :

1. Clip it back on

2. Tie wrap it back on if the clip is broke.

3. Order a new one from the dealer and replace it.

4. Use electrical tape to keep it from grounding or just snip it off and don't worry about having the Key In chime.

Jul 10, 2010 | 2003 Ford E250

1 Answer

My 97 oldsmoble starts then dies then the security light comes on and car wont start after about3 hours or so it starts up


What you are experiencing is a "short term theft" issue. The vehicles theft system can not detect the ignition tumbler code, but knows you have the correct key because you can start the vehicle.
The key tumbler may have gone bad or the wiring to the tumbler may have a problem. In either case, you should take the vehicle to your local GM dealer and ask them to check the theft system for you. If the tumbler needs replacement, the technician will have to perform a "code learn" for the new tumbler in order for the car to run properly.
Good luck.

Jan 12, 2010 | 1997 Oldsmobile Achieva

2 Answers

My key wont turn in the ignition the ignition was jammed by a forein key now the real key wont work


need more info does the key work in the door i am in the process of elimination thanks This is asked to give you the best possible repair

Dec 24, 2009 | 1997 Nissan Sentra

1 Answer

Driver's door on 1987 MB 190 cannot be locked w/the key


You didn't say if the key allows you to lock/unlock the passanger side door. If not, then your key is going bad. Otherwise, you need to replace the door lock tumbler. This is not to difficult, but takes about 2 - 3 hours to remove the inside panel and doorhandle assembly. Take pictures as you go to remember how to reinstall everything. You have a couple of options: 1. you can swap out the tumbler from the passanger side if it works, 2. you can replace the tumbler with a new one, or 3. you can replace the entire handle with a used one that has a key. With the amout of work into getting to the tumbler, my vote is for a new tumbler and key.

Dec 16, 2009 | 1990 Mercedes-Benz 190

1 Answer

Combination/ Headlight switch


disconnect battery and block wheels lower tilt wheel and un thread tilt release handle remove screws that hold lower colum cover on and remove cover you will have to remove the panel above the pedals if it has one top colum cover is only held on by key tumbler to get tumbler out turn key to run postion and press in the silver button on the bottom of the housing and use key to remove the tumbler once tumbler is out shift to 1 and tae cover off remove 2 tork screws holding switch on and disconnect connectors reverse order for installation let me know how you make out

May 21, 2009 | 1997 Ford Expedition

2 Answers

Ignition tumbler


maybe its not the tumbler, i had that same problem on my toyota pickup i just shot a little wd-40 into the key hole and moved the key around and presto it turned all the way.

Jul 25, 2008 | 1993 Toyota 4Runner

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