Hi, Guest
05-22-2007, 01:22 AM
Now THAT is a set of definitive replies! Thanks all. I'll not worry about disconnecting now!
And the code was 'mis-fire on #1 cylinder'.
My post here http://www.focuscanada.net/forum/index.p...opic=21338 explains some of it. Basically, I don't know s*** about these engines electronics etc, and this is the first time I've come across an EGR system (I'm a Brit, what can I say!), so when the EGR tube broke at the manifold end, I just plugged the manifold with a quarter, and left the tube as it was...open ended. I didn't know what the tube really did, and even after reading some things, it didn't occur to me to do the 'bypass' of the DPFE. Consequently, she's been running lean for a long while I think, due to the open end on the tube.
However, I'm thinking there might be another problem here that is giving the mis-fire...seeing as it was cyl #4 before, and now it's #1. Maybe fuel, maybe coil-pack (though the wiring looks ok). I know it's not the plug or leads, as they were changed recently, and I checked the plugs last week for gap etc.
So, now the EGR system is back as it should be (what a B**** that was to get undone...siezed real bad...thanks WD40!), I'm going to run to work tomorrow and see how she behaves, but I'm thinking it will still stall at stops when cold, and run with a real low idle when warm. Actually, that's another symptom that might help determine the problem. When she's warm, and I stop, the engine surges to about 900rpm, then drops to about 700....it does that 3 or 4 times, then settles at about 700 (700 is a guess...I just know it's low enough to vibrate). Also, the first application of throttle is sluggish.
However, at 'drive-it-like-you-stole-it' acceleration, it has no problem...joining the freeway, flooring it in 3rd is just fine. Cruising is fine. Just the low end of the band is giving trouble.
Any more help would be great, even though I know this is not a fantastic explanation of events.
Cheers,
S.
And the code was 'mis-fire on #1 cylinder'.
My post here http://www.focuscanada.net/forum/index.p...opic=21338 explains some of it. Basically, I don't know s*** about these engines electronics etc, and this is the first time I've come across an EGR system (I'm a Brit, what can I say!), so when the EGR tube broke at the manifold end, I just plugged the manifold with a quarter, and left the tube as it was...open ended. I didn't know what the tube really did, and even after reading some things, it didn't occur to me to do the 'bypass' of the DPFE. Consequently, she's been running lean for a long while I think, due to the open end on the tube.
However, I'm thinking there might be another problem here that is giving the mis-fire...seeing as it was cyl #4 before, and now it's #1. Maybe fuel, maybe coil-pack (though the wiring looks ok). I know it's not the plug or leads, as they were changed recently, and I checked the plugs last week for gap etc.
So, now the EGR system is back as it should be (what a B**** that was to get undone...siezed real bad...thanks WD40!), I'm going to run to work tomorrow and see how she behaves, but I'm thinking it will still stall at stops when cold, and run with a real low idle when warm. Actually, that's another symptom that might help determine the problem. When she's warm, and I stop, the engine surges to about 900rpm, then drops to about 700....it does that 3 or 4 times, then settles at about 700 (700 is a guess...I just know it's low enough to vibrate). Also, the first application of throttle is sluggish.
However, at 'drive-it-like-you-stole-it' acceleration, it has no problem...joining the freeway, flooring it in 3rd is just fine. Cruising is fine. Just the low end of the band is giving trouble.
Any more help would be great, even though I know this is not a fantastic explanation of events.
Cheers,
S.