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Lincoln LS 3.9 engine problem

49 messages,  Last post on Nov 11, 2009 at 11:49 AM

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#23 of 49 Air cleaner removal by ronron1 Dec 23, 2008 (8:10 am)
I have great difficulty removing the air cleaner from my 2002 LS V8. The owners manual makes it look easy, but thats not the case. Any help would be appreciated.
#24 of 49 misfire condition on 3.9 by wifesls Dec 25, 2008 (6:53 pm)
I am also having the misfire condition reoccurring with my 2001 ls with 167000 miles. According to the computer, the misfire is random on all but 2 cylinders. The computer is also giving a catalyst code. I have been putting off that repair because of the cost of catalytic converters (i cannot find any aftermarket). I am beginning to think that because the catalyst is not working properly that it is causing a rich condition to occur and flooding the engine under load at that rpm. Any thoughts? Oh i have had this car at the dealer and my personal mechanic, and have replaced the plugs and valve cover gaskets. Replies to this message: leadfoot4 (Jan 10, 2009 4:43 am)
#25 of 49 Re: misfire condition on 3.9 [wifesls] by leadfoot4 Jan 10, 2009 (4:43 am)
Replying to: wifesls (Dec 25, 2008 6:53 pm) At 167,000 miles, I wouldn't doubt that the "cats" could be a problem however I'd check the O2 sensors first. They are part of the mixture control network, and a lot cheaper to replace. My 2000 LS, with only 57,000 miles currently, had an O2 sensor get "lazy" last year, and would set the CEL every so often. Two new sensors (did it myself), and I was back in business.
#26 of 49 About tackle by cmax Sep 30, 2009 (6:05 am)
I have a miss which occurs intermitently(2000 LS) I have replaced 3 coils in the past around 78000 miles ,Themostat around 85000 miles The miss occurs around 40 to fifty mph uphill or flat but not all the time. The question is ' Is there a mile marker for replacing the timeing chain or gear and any thing else .
#27 of 49 about to tackle by cmax Sep 30, 2009 (6:06 am)
How many miles has anyone driven their LS 2000 or what can i expect out of mine. I drove a 97 t bird 379000 before a simi to it out without any major issues, Any input would help this car is expensive to maintain but i like it I have presently just over 100,000 miles on it.
#28 of 49 3.9 engine skipping by dan193 Oct 01, 2009 (8:40 am)
My 2001 lsv8 idles rough and skips between 40 and 50 mph. It has 120,000. My mechanic says I have no compression in the back cylinder drivers side. He said because of manufacture type that engine cannot be rebuilt and has to be replaced. He also said the best thing is to get rid of the car. My question is, can I replace the engine with a 4.6 or 5.0 without replacing the auto trans or rewelding motor mounts? Also, is he right that these are throw away engines? Replies to this message: cmax (Oct 01, 2009 9:30 am) akirby (Oct 01, 2009 10:35 am) toomanyfumes (Oct 01, 2009 1:55 pm) akirby (Oct 01, 2009 2:17 pm) and 2 more...
#29 of 49 Re: 3.9 engine skipping [dan193] by cmax Oct 01, 2009 (9:30 am)
Replying to: dan193 (Oct 01, 2009 8:40 am) So the mech said everything else is doing its thing.
#30 of 49 Re: 3.9 engine skipping [dan193] by akirby Oct 01, 2009 (10:35 am)
Replying to: dan193 (Oct 01, 2009 8:40 am) The rough idle/skip is usually caused by bad COPs, but that wouldn't account for the lack of compression. The engine can most certainly be rebuilt - there's nothing magic about it. You can't easily replace it with a different engine because it's all computer controlled and intertwined. You'd want to get another 2000-2002 3.9L V8. Replies to this message: toomanyfumes (Oct 01, 2009 1:55 pm) akirby (Oct 01, 2009 2:17 pm) toomanyfumes (Oct 01, 2009 3:06 pm) and 1 more...
#31 of 49 Re: 3.9 engine skipping [akirby] by toomanyfumes Oct 01, 2009 (1:55 pm)
Replying to: akirby (Oct 01, 2009 10:35 am) Right, a 4.6.or 5.0.won't fit. Also, like he said, you would need a first gen (2000-2002) engine. Replies to this message: akirby (Oct 01, 2009 2:17 pm) toomanyfumes (Oct 01, 2009 3:06 pm) akirby (Oct 01, 2009 4:31 pm)
#32 of 49 Re: 3.9 engine skipping [toomanyfumes] by akirby Oct 01, 2009 (2:17 pm)
Replying to: toomanyfumes (Oct 01, 2009 1:55 pm) Actually, a 4.6L will fit - from the top. The engineers built one around 2002 and even took some LS owners for a ride on the test track. But it wouldn't fit from the bottom due to some suspension pieces so it wouldn't work on the assembly line.   There are simply too many things that have to work together with the PCM to do an engine swap. Not like the old days when everything was mechanical and stand-alone. Replies to this message: toomanyfumes (Oct 01, 2009 3:06 pm) akirby (Oct 01, 2009 4:31 pm)

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