2001 Mustang 3.8, Hosed of engine. After got a service engine soon light. Hooked up OBD2 scanner. Scanner cannot get computer to respond. Checked fuses, all good.
Year : 2001Make : FordModel: MustangEngine: 3.8L
changed plugs & plug wires.
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I would like you just to double check this fuse as it controls the Data Link Connector or DLC.
Fuse is good. Message on scanner "waiting for vehicle to respond"
Ok then, With a volt meter, you will have to check for voltage at pin 16 of the connector where the scan tool plugs into.
I have power
If you have power, either your hand held scan tool is not communicating or you have a faulty Powertrain Control Module. If you can, see if you can somehow hook up a second scan tool and verify if it still cannot read the codes.
I hooked this tool up in my 2008 F150 and it works fine,
Ok, then you have a communication problem with the PCM and either the PCM is faulty or the wires between the dlc connector and the PCM are faulty.
What is the dlc connector? The car runs, but runs very rough
DLC= Data Link Connector. The connector you plug the scan tool into.The car can run if communication is lost between the DLC and PCM.
Would it still run with a faulty PCM?
Yes, the vehicle can still run. There are different strategies that the PCM uses and if one fails, the vehicle can still run, most of the time not run correctly though like what your vehicle is doing.
How hard is the PCM to replace?
It is not hard to replace, the only problem is it will need to be programmed to the vehicle with a Ford scan tool or the vehicle will not start.
Well thank you for your help.
Happy I could assist you today.
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