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Unread 06-19-2013, 08:59 PM   #1
BoraBora
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Fluids and spark plugs

I bought my Jeep used with 74k miles on it, and I'm now at 76k and have noticed a few things:

A) It takes a little effort to start up, spark plugs?

B) It occasionally shifts gears rough, usually when I pull my foot off the gas and I'm coasting and it down shifts

C) It's a dog when going up even the slightest hill and I really have to push it hard

D) The gas mileage is terrible! It's a 3.7 and I'm getting 12.5 in the city and 16 on the highway....and I'm not driving it hard, I'm very easy on the gas

I figure I might as well go and get everything serviced at once, such as the fluids and spark plugs and so on...however can anyone give me some pointers? I don't think the spark plugs have ever been replaced and I read that the rough gear shifting could be a sign to replace the transmission fluid? I was thinking of SeaFoaming it before taking it into get the Oil changed, however I've never really worked on a car (I'm 16) and my dad is currently deployed so I can't ask for his help. It's just me.

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Unread 06-19-2013, 09:32 PM   #2
Jeepforthewin
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Did the seller give you any maintenance records of any sort when you bought it? If not and you think the spark plugs are still the original It wouldn't hurt to go ahead and swap them out. I just swapped mine out last weekend and I can feel a big difference, I have the hemi but you should still see a nice difference if they are the original plugs!
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Unread 06-19-2013, 09:34 PM   #3
Jeepforthewin
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Also I would check the fluids too. If you didn't get any maintenance records they may not have even done the 60k mile service
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Unread 06-19-2013, 09:49 PM   #4
BoraBora
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Yeah I didn't get any of the service records, I'm thinking I should just go ahead and get all the fluids done at once, after I go out and check them tomorrow morning. Would the fluids explain the rough downshifting from 2nd to 1st gear when my foots off the gas?
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Unread 06-19-2013, 10:42 PM   #5
JRLT
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Did my fluids at 48k and they werent bad but it was a piece of mind thing for me.

Reset your MPG on your EVID cause its probably estimating from factory and not your driving habits.
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Unread 06-20-2013, 05:18 AM   #6
caulk04
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Reset the avg mileage every time you fill up.

I've found that ours reads no more than .2 (yes POINT2) MPG higher than actual mileage. Whether I'm getting 10.8 towing in the hills, 15.5 average driving or 18.2 all highway, it's basically dead on. If you let it figure an average for ever, it won't be accurate. Reset each time.
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