Question about 2003 Ford Thunderbird

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No Scan The scanner at the local Autozone will connect but will not communicate with the car's computer. The associate said that it will require a Ford factory scanner. Also, I have found that the car runs good cold. Then after 10-20 miles, its starts missing. Yesterday when this happened, the check engine light began flashing on and off. I ordered a Clymer service manual on DVD from RockAuto. I hope it will contain assembly diagrams and troubleshooting guidelines.

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I have Automotive Software Repair on MY PC.

OK.. For the comunication with the scanner.
it can be a FUSE.
Please check all the fuses. If you have the manual SEE the specification for each one.
But the MOre IMPORTANT is . the fuse for the CIG Lighter. DOME light. And Radio. The scanner need a 12v. power from one of them. I will see My diagram to see exactly. which one is.
OK.. The fuse is: # 06 10amp. Behind right kick panel.

You have a 3.9 L. V8.
Let me ask you a few questions.
The problem start after you put a fuel on you car.
You have cleaned with water or any other staff the engine.
The Air filter is in good condittion.

OK. It just happen after you put Fuel.
I need to you go under the car. and remove the fuel filter
See the condition of the fuel, because it's can be the problem.
When the water goes down. the car run good. baut with the movement the fuel and water come mix. causing missfiring.
If you found water . DON"T put WATER remover. Try to drop the fuel or burn. You can put a high OCTANE. it will reduce the missfiring.

But if the problem is not fuel.
Check the condittion of the MASS sensor connector. .
Coolant sensor. TPS sensor. for any dirty or corroded condition.

But IF you have cleaned the engine.
You will need remove the ignition coils. and see if there Water inner. if you found blower up. all of them.

I hope this help on something..

if you found the fuse blow out replace. and try to scann again.
and letme know.

I will answear as soon as I can.

Posted on Jul 28, 2008


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