Tune Up No Sooner Than 100,000 Miles?

I made a matrix of the maintenance schedule from the factory service manual
so I could have it all on one sheet and in a time line. I just pulled it out
to confirm that I didn't miss a plug and wire change on my 2000 Concorde
LXi. According to my sheet... I didn't. Did I copy this right? Is there no
scheduled replacement of plugs and wires before 100,000 miles? Everything
seems to be running fine. I just want to keep it that way.

 

The LH cars have what's called coil-over-plug. IOW - each plug has its
own dedicated coil mounted right over top of it - no secondary ("high
tension") wires to replace. It's a very good system - only thing you'll
need to do is replace the plugs. Occasionally a coil might go out
(though I haven't lost one yet at 140k).

Yeah the book says 100k on the plugs. My advice (Oh no - I'm getting
ready to recommed something other than what the factory
recommends!!!!!!) 8^) is to replace the plugs at around 70 or 75k
miles. For two reasons: (1) Much less likelihood of difficulty in
getting the plugs out due to bound up threads - many people have had
that problem when they leave them in for the full 100k. (2) You will get
1 to 2 mpg improvement with the new plugs compared to the ones that have
70+k miles on them. I and others have individually documented that.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
adddress with the letter 'x')

 

The LH cars have what's called coil-over-plug. IOW - each plug has its
own dedicated coil mounted right over top of it - no secondary ("high
tension") wires to replace. It's a very good system - only thing you'll
need to do is replace the plugs. Occasionally a coil might go out
(though I haven't lost one yet at 140k).

Yeah the book says 100k on the plugs. My advice (Oh no - I'm getting
ready to recommed something other than what the factory
recommends!!!!!!) 8^) is to replace the plugs at around 70 or 75k
miles. For two reasons: (1) Much less likelihood of difficulty in
getting the plugs out due to bound up threads - many people have had
that problem when they leave them in for the full 100k. (2) You will get
1 to 2 mpg improvement with the new plugs compared to the ones that have
70+k miles on them. I and others have individually documented that.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
adddress with the letter 'x')

 

The mileage benefit may have some truth to it. 30,000 miles ago, I pushed
the average mpg button and got a reading to around 22.8 to 23. Now I get
21.8 to 22. 70,000 miles on the car now.

Plug recommendation?

 

that is correct it has a 100 k service schedule
but keep a eye on the trna sfliud if it starts to get smelly and dark do a
trqans flush using atf4

 

Except there are no plug wires.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
adddress with the letter 'x')

 

Except there are no plug wires.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
adddress with the letter 'x')