Have a 2001 ford focus zx3 2.0l dohc idles rough, high idle misfires.

Question

1998-2004 Ford Focus

The first-generation Ford Focus was manufactured in Europe from 1998-2004 and in North American from 1999 to 2007.

33 个问题查看全部

perfectmistake78 @rockabetty78

声誉积分: 13

1

发帖于: 2019年7月29日

更多选项

Have a 2001 ford focus zx3 2.0l dohc idles rough, high idle misfires.

Was told it could be the spark plugs needed replacing, so i went ahead and did a tune up. Changed all filters, spark plugs and cables, ignition coil pack and changed the oil about 2 weeks ago. But a couple of days before i did the tune up the serpentine belt snapped(it snapped while driving)so I replaced it and idler pulley. Then did the tune up. Still misfires and idles rough and high idle. Still no check engine light. What could it be?

回答此问题我也有这个问题

这是一个好问题吗？

是否

得分 1

2条评论:

perfectmistake78 did it do all of this before the serpentine belt snapped? Have you had a chance to scan the OBD for any codes yet?

由 oldturkey03 完成的 2019年7月29日

Yeah. I thought that would fix the prob, say ended up having to change the serpentine belt again and replace the idler pulley due to loud screeching. Got rid of the noise but still misfires and idles rough. There was some vibrating and shaking because the passenger side motor mount wasn't tight enough I fixed that. So there's still a slight vibration but I'm not sure if that's due to the rough idling

由 perfectmistake78 完成的 2019年7月29日

添加一条评论

2个答案

perfectmistake78 did it do all of this before the serpentine belt snapped? Have you had a chance to scan the OBD for any codes yet? — oldturkey03
Yeah. I thought that would fix the prob, say ended up having to change the serpentine belt again and replace the idler pulley due to loud screeching. Got rid of the noise but still misfires and idles rough. There was some vibrating and shaking because the passenger side motor mount wasn't tight enough I fixed that. So there's still a slight vibration but I'm not sure if that's due to the rough idling — perfectmistake78

Kentucky Ranger @kentuckyranger 声誉积分: 13 1 · Answer 1 · 2019-08-02T06:57:58-07:00

Kentucky Ranger @kentuckyranger

声誉积分: 13

1

发帖于: 2019年8月2日

更多选项

Rough idle could be several different things.

The simplest solution is replace the spark plugs and wires.

The more complicated would be a bad O2 sensor, or the timing belt is old, and has jumped timing.

If it’s the timing belt, you need to get it replaced ASAP! Most engines are interference, and if the timing belt breaks, the engine will be destroyed.

I’d hope that a 2001 would have had the timing belt replaced at least one in its lifetime, as it’s a routine maintenance item, that is supposed to be replaced every 100,000 miles.

Hope this helps!

这个答案有帮助吗？

是否

得分 0

添加一条评论