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post #1 of 21 (permalink) Old 04-23-2008, 12:55 PM Thread Starter
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3.5 Tune-Up

I'm planning to do a tune-up on my LHS. I know i need spark plugs and a PCV valve. What else do I need and how do I remove the PCV valve?
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post #2 of 21 (permalink) Old 04-23-2008, 02:51 PM
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What's the milage?

Other things:
Trans/fluid+filter change (i won't flush it with a machine though)
Diff fluid change (every 60K I believe)

If you are near 100k and hadn't had timing belt/water pump change, now it's a good time to do it. While you're doing that, you need to remove drive belts/pulleys, and spark plugs and coolant. So while you have those off, you might as well install new ones...
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post #3 of 21 (permalink) Old 04-23-2008, 03:03 PM Thread Starter
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Originally Posted by yiranhu View Post
What's the milage?

Other things:
Trans/fluid+filter change (i won't flush it with a machine though)
Diff fluid change (every 60K I believe)

If you are near 100k and hadn't had timing belt/water pump change, now it's a good time to do it. While you're doing that, you need to remove drive belts/pulleys, and spark plugs and coolant. So while you have those off, you might as well install new ones...

Im only at 35k
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post #4 of 21 (permalink) Old 04-23-2008, 09:53 PM
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lol 35k. You really don't need any tune up unless you feel like doing the work. have you replaced the spark plugs already since you owned the car? If you have, then don't worry about it. If it's the first time, then now it's not a bad time to do it.

If you haven't had a transmission fluid change, 35k is a good place to do the first one. If you do this on this schedule, you should never have to do the flush procedure (since when you do the next one at 70k, you will only have 25% of the original fluid in the car.

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post #5 of 21 (permalink) Old 04-23-2008, 09:59 PM
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My 2.7 had 85k on it with the original spark plugs!
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post #6 of 21 (permalink) Old 04-23-2008, 10:24 PM
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My 2.7 had 85k on it with the original spark plugs!
I think the Intrepids and most of the second gen. LH's have the 100,000 mile tune-up interval. Also if I'm not mistaken they come with the platinum tipped spark plugs to achieve that mileage interval.
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post #7 of 21 (permalink) Old 04-24-2008, 01:19 AM
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spark plugs do last a while. The 100k is a little bit too long. I would say 70 to 80 is the max you want to go with one set.
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post #8 of 21 (permalink) Old 04-24-2008, 11:41 AM Thread Starter
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Originally Posted by yiranhu View Post
lol 35k. You really don't need any tune up unless you feel like doing the work. have you replaced the spark plugs already since you owned the car? If you have, then don't worry about it. If it's the first time, then now it's not a bad time to do it.

If you haven't had a transmission fluid change, 35k is a good place to do the first one. If you do this on this schedule, you should never have to do the flush procedure (since when you do the next one at 70k, you will only have 25% of the original fluid in the car.
I dont think the spark plugs were ever replaced. I'm still riding on the factory brake pads from when the car was first purchased, lol. Is there a drain plug for the transmission fluid? Also I've located to PCV valve, but it looks like it's kinda difficult to access with a rachet.
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post #9 of 21 (permalink) Old 04-24-2008, 11:50 AM
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No drain plug for the trans pan...Just get a big catch pan and loosen up all the bolts. Also there is no gasket from what I remember...Just use Mopar Silicone designed to work with petro products (i forget the name of it).

DO NOT over torque the tranny pan or it will permanately leak. Use a torque wrench and the proper pattern.
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post #10 of 21 (permalink) Old 04-24-2008, 12:26 PM Thread Starter
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Thanks Mopar. Does anyone know how to access the PCV valve with a rachet?
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post #11 of 21 (permalink) Old 04-24-2008, 12:43 PM
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An open ended wrench works great!
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post #12 of 21 (permalink) Old 04-24-2008, 01:17 PM Thread Starter
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An open ended wrench works great!
Which size?
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post #13 of 21 (permalink) Old 04-25-2008, 06:03 PM Thread Starter
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I changed the spark plugs. I've attempted to remove the PCV valve and I BROKE IT! I'm contemplating taking it to the dealer. Is this an easy fix?
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post #14 of 21 (permalink) Old 04-25-2008, 07:02 PM
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how broken is it? can you post a picture? If i remember correctly, all you need to do is put a 18 or 19 mm deep socket on it and it should come out relatively easily...
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post #15 of 21 (permalink) Old 04-25-2008, 07:13 PM Thread Starter
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Originally Posted by yiranhu View Post
how broken is it? can you post a picture? If i remember correctly, all you need to do is put a 18 or 19 mm deep socket on it and it should come out relatively easily...
The thread piece is still stuck in the plenum. It broke right at the bolt. I used a 19mm wrench to try to get it off, but I guess I was turning in the wrong direction.
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