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Old 12-04-2012, 04:10 AM   #1
Birdman01
Scooby Newbie
 
Member#: 337141
Join Date: Nov 2012
Location: logam, UT
Vehicle:
04 wrx
silver

Default tune up

hey question, i just bought an 04 WRX with 85,000 miles on it about 3 months ago, and i noticed it doesnt idle as smooth as it should, a mechanic said it could be fixed just by a tune up? but one how much does a tune up cost, my car is 100 percent stock, and any ideas of where to go other then a dealer in salt lake? dealers just like to bend you over and take all your money! and is this something i could fix myself?
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Old 12-04-2012, 04:32 AM   #2
07pearlwht
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Member#: 212576
Join Date: May 2009
Chapter/Region: SWIC
Location: Reno, Nevada
Vehicle:
2007 impreza wrx sti
pearl white

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Why do you think that it doesn't idle as smooth as it should?

A "tune up" could include many things.

Normal things like changing and/or checking all of the fluids (oil, coolant etc) can be fairly easily done by ones self, as well as things like a compression test to check if your engine is healthy.

Also check your vehicle Manuel or online for maintenance intervals.
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Old 12-04-2012, 06:45 AM   #3
mhoerath
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Member#: 131379
Join Date: Nov 2006
Chapter/Region: MAIC
Location: richmond, va
Vehicle:
2003 354 ftlb@3k rpm
justablue hatch

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No history with the car? get a small notebook and record mileage and what is done to the car. that becomes your maintenance record and when you sell the car adds value.

read your car's manual and decide what service intervals are due. oem sparkplugs change somewhere near that mileage for example. I change my fuel filter every 50k miles.

the more you do to your car the more you learn and save $.
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Old 12-04-2012, 06:43 AM   #4
HinshawWRX
Medium Frank
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Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

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We cannot price out tune up's for you, they have too many variables to factor in.

The rough idle could be as simple as a dirty Idle Air Control Valve. Start there.
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Old 12-04-2012, 08:15 AM   #5
Bacon117
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Join Date: Jun 2006
Chapter/Region: MWSOC
Location: Michigan
Vehicle:
02 Silver Wagon
"Stage 2"

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In modern cars a "tune up" is usually just replacing things like air filter, change the oil, and change the spark plugs, etc. Days of old, you had distributor, points, etc. etc.

If the plugs have never been done, you are due. I believe it's 70k miles or somewhere around there where they're supposed to be done. If the plugs have 85k miles on them, this could certainly be a source of rough idle (with no CEL).

Personally, I would just put new plugs in it and see what happens.
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Old 12-04-2012, 03:53 PM   #6
Birdman01
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Join Date: Nov 2012
Location: logam, UT
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04 wrx
silver

Default

thanks guys! but i have changed the spark plugs that has all been done, i will check the idle air control valve that could be the problem, and i will also look into replacing the fuel filter, and look to change and check the fluids. i have never owned a high performance car with a turbo before, so i just didnt know if there was anything different with the basic tune up? But makes sense. and yes i do have a record of all the maintenance done to the car i am pretty anal on keeping things up to date.
also my engine makes a ticking noise at idle, i have done a lot of research on it and they say its pretty normal for subarus? do any of you guys have this same ticking or experience? its there at idle, but goes away at about 3,000 rpms? it seems to be coming from the drivers side up where the timing belt cover is in the bay with the cam shafts? but not entirely sure? could be higher and deeper in the engine? but the car drives fine and shifts smooth!
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Old 12-04-2012, 05:07 PM   #7
cmiovino
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Member#: 134005
Join Date: Dec 2006
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2004 WRX Premium
PSM

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The tick at idle is probably normal. They're loud engines... especially when cold.

Some things you may want to change/check:
Spark plugs
Clean MAF (this especially for your idle problem)
Clean/replace air filter
Engine oil/filter (if you aren't up to date)
Tranny/diff fluid
Fuel filter (since it's external)

... basically anything normal. Be really careful with the MAF.. they are fragile. Also check visually any vacuum/boost lines. It's common to have leaks which fill boost and lean out the engine. You can spray carb cleaner around the turbo inlet hoses while the car is running to see if it will change the RPMs at all.
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Old 12-04-2012, 08:06 PM   #8
Bacon117
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Join Date: Jun 2006
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Location: Michigan
Vehicle:
02 Silver Wagon
"Stage 2"

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As cmiovino said, vacuum leaks would be my next thing to check. Usually an IAC is erratic idling, not rough idling. In my experience anyway. Strange things happen when stuff goes bad.

A vacuum leak can cause poor air/fuel mixture which causes poor idle stability.
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Old 12-04-2012, 09:28 PM   #9
sackytar
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Join Date: May 2007
Chapter/Region: MWSOC
Location: Grand Rapids MI
Vehicle:
03WR Rally/XTDD/98SJ
PrimerGrey

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New car check everything!!!!
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