- #2 of 10
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Re: LS not running smooth at constant speed [logils]
by toomanyfumes
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Jan 24, 2009 (7:42 pm)
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Replying to: logils (Jan 24, 2009 5:33 am)
I know if the coils are going bad you'll feel that skip at around 50. Maybe one of the new one's are bad? My '05 V6 does the same thing-only at around 50 MPH.
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- #3 of 10
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Re: LS not running smooth at constant speed [logils]
by battleax
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Jan 31, 2009 (2:01 pm)
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Replying to: logils (Jan 24, 2009 5:33 am)
I've had the same problem with my V6. Dealer changed out first #'s 5 & 6 cylinder coils & plugs in Sept. Then last week cylinders 1,2,3 & 4. It was costly. this BETTER fix the problem.
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- #4 of 10
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Re: LS not running smooth at constant speed [battleax]
by toomanyfumes
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Jan 31, 2009 (7:46 pm)
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Replying to: battleax (Jan 31, 2009 2:01 pm)
I feel it only about once a day, usually on the same spot on the same road. 
It's just a minor annoyance now, I hope to make it to summer and if it gets worse I'm going to replace all six coils, plugs, and the pcv while I have the manifold off.
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- #5 of 10
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Re: LS not running smooth at constant speed [toomanyfumes]
by lsmummy
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Mar 23, 2009 (7:44 am)
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Replying to: toomanyfumes (Jan 31, 2009 7:46 pm)
Unfortunately guys, I have had everything replaced, and this still happens. The mechanics told me that it is a flaw in the LS engine. I love this car, but it is very high maintenance. Now I am having the overheating problem.
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- #6 of 10
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Re: LS not running smooth at constant speed [lsmummy]
by akirby
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Mar 23, 2009 (9:34 am)
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Replying to: lsmummy (Mar 23, 2009 7:44 am)
I don't know of any "flaws" with the LS engine per se. Some of the components have issues (cops, hydraulic fan) but those can be fixed.
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- #7 of 10
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Re: LS not running smooth at constant speed [akirby]
by lsmummy
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Mar 23, 2009 (11:49 am)
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Replying to: akirby (Mar 23, 2009 9:34 am)
Yeah, I guess flaw is the wrong word, but the guy I talk to from Lincoln told me that this specific problem with the valve covers leaking is VERY common. Like I said, I have a love/hate relationship with this car. I have done and have had a lot of work done to it.
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- #8 of 10
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Re: LS not running smooth at constant speed [lsmummy]
by akirby
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Mar 23, 2009 (11:58 am)
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Replying to: lsmummy (Mar 23, 2009 11:49 am)
Yes, the valve cover gaskets and cops are a known problem. I thought you were talking about some fatal flaw that couldn't be fixed.
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- #9 of 10
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Re: LS not running smooth at constant speed [akirby]
by lsmummy
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Mar 23, 2009 (12:07 pm)
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Replying to: akirby (Mar 23, 2009 11:58 am)
No, but it feels that way when I had everything replaced and it is happening again. Is there possibly something else causing it again?
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- #10 of 10
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Re: LS not running smooth at constant speed [lsmummy]
by akirby
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Mar 24, 2009 (5:19 am)
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Replying to: lsmummy (Mar 23, 2009 12:07 pm)
If they're leaking again then either they weren't actually repaired the first time or the repair was done incorrectly. The problem was with the original gasket - not the engine itself. Once repaired properly it shouldn't return.
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