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Matt
Matt, Mechanical Engineer
Category: Ford
Satisfied Customers: 20588
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have a focus 1.8 diesel and the battery drained yesterday.

Customer Question

I have a focus 1.8 diesel and the battery drained yesterday. I've charged it but when I reconnect it there appears to be a short circuit as the ignition lights come on with out the key being turned on
Submitted: 11 months ago.
Category: Ford
Customer: replied 11 months ago.
Not sure if the weather has anything to do with it but I have trouble starting it and it seems to misfire in the damp weather. Once the engine warms up or the weather dry's up the problem goes away.
Expert:  Shantal-Mod replied 11 months ago.
Hello,
I'm Shantal and I'm a moderator for this topic.
I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.
I was checking to see if you had already found your answer or if you still need assistance from one of the Professionals.
Please let me know if you wish to continue waiting or if you would like for us to close your question?
Thank you,
Shantal
Expert:  Matt replied 11 months ago.
Hello
This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;
Airflow meter
Crank position sensor
Cam position sensor
O2 sensor
Throttle pedal position sensor
unplug each in turn and use some switch / contact cleaner spray on the pins to ensure its all grease / dirt free
Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40
and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump
And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.
Expert:  Matt replied 10 months ago.
Hi
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