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watsonds1
New User
Mar 8, 2011, 8:59 PM
Post #1 of 2
(4123 views)
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2000 Ford Focus misfire
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I have a 2000 ford focus zx3 with about 160k miles. It is an automatic and has the zetec motor in it. I have replaced the timing belt within the last 20k miles. It had been running fine up until about three weeks ago. I had to leave the car sitting for about two months because of snow and, with the chaotic life I live, was unable to start it and let it run like I should have. It began to idle rough when I started it after and I added some gas treatment to the tank. This did not cure the problem. I was then removing and checking the spark plugs to make sure they looked ok and noticed two had some oil on them around the threads. Not sure if that is awful or could be the cause of my misfire but I know it's not normal. I drove the car on a trip that was about 50miles one way and as I returned the check engine light came on. I went to Advance Auto and they ran the OBDII and found the code to be the EGR valve. I went home to do some research and then walked out to find the EGR on my car. As I was looking at the EGR I saw the DPFE sensor had melted. I have now replaced the DPFE but still have a misfire when the car is in gear. Also when the car is under stress (going uphill, under hard acceleration) it seems like the car is going to stall out or comes very close to stalling and creeps very slowly up the hill. If the car is in park or in neutral it seems to run fine unless revved up. I was wondering where I should go from here? I am in the process of trying to sell the car and don't want to dump a lot of money into the car but want to get it running correctly to sell it. Please help me out if you have any suggestions. Thank you in advance.
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zmame
Veteran
/ Moderator
Mar 9, 2011, 3:51 AM
Post #2 of 2
(4112 views)
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Re: 2000 Ford Focus misfire
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Might be a coil pack problem take off the coil pack and inspect for cracks they might be hard to see look for any signs of rust tracks they will lead you towards a crack.
or might be plugged converter casuing excess heat to go through erg and torch DPFE. I would pull the upstream O2 sensor (befor the cat).. and drive it for a short distance see if the problem is gone if it is then you need a converter.
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