Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello, Chris isnt online at the moment, I can try and assist you if you like. Does the check engine light come on when the key is turned to on? Do you have power at pin 16 of the data link connector, the lower right last pin in the connector? Do you have fuel pressure at the rail with the new fuel pump?
Ok, yes the check engine light should come on when the key is turned to on and go out when cranking, this will indicate the pcm is getting power from the eec power relay. The fuel pump relay is supplied power thru the eec power relay, so if you have fuel pressure you should have pcm operation. But you mentioned you cannot communicate with the pcm using a scan tool. Do you have ignition spark and injector pulse, will it try to run if you spray carb cleaner into the intake for a few seconds. Also does the red theft lamp blink fast when you turn the key to on or does it stay on steady for a few seconds and then go off?
Ok and does the engine sound like its cranking over at a normal speed or does it sound like it is out of time? Did this problem just happen, or was this a result of doing a repair and start to have this problem?
The pcm is located at the top center of the firewall as shown in the pdf file ive attached. its possible, but more likely an issue as mentioned in the tsb you are looking at
Main thing would be to find out why you have no communciation with the pcm, it might just be a scan tool issue, see if it will run if you spray carb cleaner into the intake since you have spark which should be good blue spark and adequate fuel pressure
I would try another scan tool first before going deep into a communciation issue, verify the check engine light operation. try swapping out the eec power relay with horn relay for instance should be similar relay
Just come back to this question, it remains open until rated and we can still discuss your issues
It should yes.
Very good, let me know what you find and verify pin 16 on the dlc is hot to power up the scan tool
Hello, do you need more help with this concern?