Stalling - Ford - Focus :: Rough Idle / Shaking When Gets Under 1000 RPMs
Nov 4, 2011
I have a 2008 Ford Focus - 4 Door Sedan SE 60300 miles.
I've gone to 3 mechanics now and no one can seem to figure out whats wrong with my car. Here's whats happening:
About 1 1/2 years ago I took my car to get an oil change at Jiffy Lube (Yeah never again). When I left, my car was idling funny... Silly me didn't take it right back and have them tell me what was wrong.. so I let it go, well about a month later it started idling even weirder. Basically it feels like my car is shaking when it gets under 1000 RPM and I notice my RPM dial start falling and bouncing back, acting like its going to stall, but never does. I notice a loss of power when this is happening (on speed up and just accelerating in general). All of this is random, I can't seem to put a pattern to it as to when it happens. One day I'll start it up and everything is perfect... Then I'll shut it off and restart it later, and it starts vibrating and puttering again... No signals as to if its hot/cold or wet/dry, no environmental variables seem to cause it to happen anymore than others. And there is no check engine light on, everything "looks" normal.
What I've had done to it so far is:
Air filter changed / reseated
3 oil changes (keep getting told it will work)
Throttle cleaned
Computer reset for idle sensor data rebuilding
Now I'm told that I need new engine mounts, and that could be the reason for the vibration. I'm thinking that the vibration caused the mounts to wear out, more so than the mounts being the cause. Mainly because I don't see how bad mounts could cause loss in power/bad idling.
What could be wrong?!? Really bugging me and don't want to keep throwing money at it for phantom solutions. Seems like mechanics I go to can't figure it out unless there is a check engine light on with some diagnosis code to tell them exactly whats wrong.
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Just checking in to see where you'd recommend to start looking for a rough idle issue. It seems to get worse once the car fully warms up. I took a vid, and although it may not seem horrible in the video, it sometimes causes throttle lag from a stop and causes the car to get close to stalling when falling from high RPM's. Take a look at the video .....
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YouTube......
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I also experience very noisy "bearing" type noise upon start-up which happens for about 10 seconds or so. This has been going on for a month or so.
During my online research it's appearing that I may be suffering from the dreaded Timing Chain Tensioner I've read a lot about.
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I recently bought a 2001 Ford Focus (about 4 months ago) and it recently began having a rough idle, check engine light, and stalling. One night, I started and it immediately stalled. When I tried to drive it, it made a grinding noise. Eventually, I made it home and got it to a shop the next day. I was told that it was likely the pistons by a mechanic. He later confirmed it was the pistons, had them replaced, sent my engine off to a machine shop for "smoothing". 2 days later, I had it back and it seemed to be running great. Took it to work and went up a small grade hill (not even labeled) and it began chugging, making a grinding noise and the check engine light began flashing.
I took it back to the shop where the mechanic couldn't even keep it running and he determined that it was a broken hose. He replaced it, free of charge and the car ran great for a couple days. Next thing you know, it begins the rough idle and random stalling but no check engine light. I took it back in and he asked to keep it for a few days. He said that he determined the machine shop didn't do things correctly and sent it back in. I got it back this morning and it seemed to be running fine for my husband, but once I got in it, there was a loud rumble and a slightly rough idle. Then, there was the smell of burnt rubber. My mechanic wants it back, but isn't open again until Monday and I work the next two days. By the time I got it home from work, it had a very rough idle, issues accelerating and I'm still having issues going up hills.
Clearly, my mechanic is really focused on the issue being related solely to my pistons and is only focusing on that. I think something else is wrong and is being missed, but I have no clue what.
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Audi A3 3.2 owner here from Fortitude and have rough / lumpy idle issues? While at a stop in neutral w/a cold or warm engine, it seems a little rougher than one would expect. If you rev it to 1000-1100 rpm the whole car shakes.
Engine Mounts worn?
APR Software causation?
Cam Followers or faulty coils?
Do I need a heavier duty front and top engine mount?
Wondering if CAI and Exhaust along w/ the APR ECU tune is causing it or if I'm just being paranoid.
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