Question about 2000 Ford Focus
It seems like the wiring issue.
check the wiring or get an auto electrician to have a look at it
Posted on Oct 19, 2017
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Posted on Jan 02, 2017
I just had this same problem on my 96 Explorer XLT. Very random when it would do it, sometimes everyday for a week or nothing for 6 months. What I found was that when this happened, when I turned the key to the on position without starting the vehicle. That the check engine light should come on and if it doesn't, that means the the computer isn't powering up. What I had to do was leave the key in the on position and pop the hood, and on the passenger side of the engine compartment, there is a power distribution block, in there is a relay for the EEC Power Relay. Now with the key on I wiggled this relay and you can hear systems under the hood kick in. Relays turning on, etc nothing actually starting to scare you though. But this lets you know that the computer is alive and running. You should now be able to turn the key to the start position and the vehicle should no crank over, but now fire and run. It took me quite a while to figure this out because it was so intermittent. In the end, I replaced the relay for the EEC Power and everything has been fine since. When the new relay was in there I could not replicate this fault as I could with the bad relay. Hope this helps you.
Posted on Nov 10, 2008
SOURCE: Ford Focus cutting out
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Dec 03, 2008
needs a vehicle speed sensor, its on the trans. if the engine was just put in( within like 2 or 3 days, not weeks) then it may have been busted in the engine swap. hope this helps and good luck
Posted on Jun 09, 2009
It's a check engine light, have it checked right away. If you take it to a Ford dealer, they can give you a very detailed diagnosis, however they also charge about 80 bucks just to do that. If you take it to an auto parts store (AutoZone, Advance Auto Parts, NAPA, etc.) they will often be able to check for free, but it won't be the most detailed solution.
Posted on Jun 25, 2009
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