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  #1  
Old 08-03-2010, 02:46 PM
DHEM DHEM is offline
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Default who all has rough idle in a 3.0?

it seems to be problem with 3.0's, i got a really rough idle in mine, it almost feels like a misfire. But im wonder who has it, or who did what to fix it, im thinking seafoam and new plugs might do the trick
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  #2  
Old 08-03-2010, 03:32 PM
STL STL is offline
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Default Re: who all has rough idle in a 3.0?

May wanna clean your MAF and IAC first
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Old 08-03-2010, 03:45 PM
DHEM DHEM is offline
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Default Re: who all has rough idle in a 3.0?

I was going to clean my MAF once i bought a new filter.
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'05 2wd Ranger xl with the 3.0

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  #4  
Old 08-03-2010, 03:55 PM
STL STL is offline
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Default Re: who all has rough idle in a 3.0?

if u have a factory throttle body cover (plastic probably sas 3.0 sohc) pull it off and the aluminum deal on top the throttle body is the IAC
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Old 08-03-2010, 04:02 PM
DHEM DHEM is offline
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Default Re: who all has rough idle in a 3.0?

alright i'll give that a try
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'05 2wd Ranger xl with the 3.0

MODS-Alpine head unit, throttle cable mod, Black Rock wheels, FX4 lvl II axle swap, pooleo's camo painted bezel and mustang dome, painted/aftermarket headlights/tails fold-a-cover and over 100 hp in stickers
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  #6  
Old 08-03-2010, 04:10 PM
STL STL is offline
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Default Re: who all has rough idle in a 3.0?

Found my picture from when I just did mine. I just haven't had time to add them to the how to

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Old 08-03-2010, 07:46 PM
EMB1230 EMB1230 is offline
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Default Re: who all has rough idle in a 3.0?

Quote:
Originally Posted by STL View Post
if u have a factory throttle body cover (plastic probably sas 3.0 sohc) pull it off and the aluminum deal on top the throttle body is the IAC
3.0's are ohv and have no writing on the TB cover. Just 2.3 'tecs and the 4.0 sohc do.
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  #8  
Old 08-04-2010, 10:27 AM
06ranger 06ranger is offline
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Default Re: who all has rough idle in a 3.0?

i have a rough idle on my 3.0 but i just got done changing the plugs and tuning it up and its still a little rough but not as bad, might try to clean iac to see if that helps any other suggestions other than that and the maf?
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  #9  
Old 08-04-2010, 10:33 AM
zatticus zatticus is offline
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Default Re: who all has rough idle in a 3.0?

Mines gone rough a few times.
First time, I changed the sparkplugs, and air filter, and cleaned the MAF and all that. Fixed the problem.
Second time, I Changed the fuel filter and that seemed to fix the problem.

third time, Most recent.
It died on me, this morning

And I'm pretty sure its the alternator. The battery level was low yesterday, and the windows were rolling up reeeaaaaaaaaaaaally slow.

And my mom had to drive it to work this morning, and got like, 4 blocks and it died on her.

>_<
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  #10  
Old 08-04-2010, 06:49 PM
onerinconhill onerinconhill is offline
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Default Re: who all has rough idle in a 3.0?

Mine has a rough idle too, but haven't got it tuned up or cleaned anything (plan to when I can afford to get it done, not car smart enough to do it myself) but it's not really that bad, it's noticeable but hasn't ever died or anything. It's a pretty common problem from what I've seen. My temperature gauge quit working at around the same time, which I also see a lot on here.
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  #11  
Old 08-07-2010, 08:49 AM
Ranger01 Ranger01 is offline
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Default Re: who all has rough idle in a 3.0?

I was just about to post this because it's pissing me off.
I have done
Fuel Filter
Injectors
Oem plugs
Underdog wires
Screamin demon coil pack
Replaced the IAC
Cleaned the MAF

It still runs really rough and i get cylinder 4 and 5 misfires about once every two weeks.

I am thinking a vacuum leak but have no idea where to check
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  #12  
Old 08-07-2010, 10:12 PM
zatticus zatticus is offline
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Default Re: who all has rough idle in a 3.0?

Quote:
Originally Posted by Ranger01 View Post
I am thinking a vacuum leak but have no idea where to check


Try the Brake Booster seal, I had to fix mine, about two months ago.
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  #13  
Old 08-08-2010, 01:35 PM
Fluffy Fluffy is offline
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Default Re: who all has rough idle in a 3.0?

mine started when i pulled a 6x12 uhaul back from cali. had a mis fire on number 6 so i started with plugs, wires, and the coil pack. it got better but didnt go away. still had a misfire on number 6 everyone told me to run super and injector cleaner thru it. no change so i changed the injector and again still a little better but still there. next is the fuel filter.
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  #14  
Old 08-12-2010, 05:37 PM
barktreed barktreed is offline
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Default Re: who all has rough idle in a 3.0?

I just bought a truck with this engine in it and I SWEAR it is doing something odd too. The mechanic says I'm just to used to toyota engines and he can't here anything wrong but to me it sometimes sounds like its missing or dropping down then back up in idle speed. The mechanic and some other people told me that the condenser will cycle and cause that even when the AC is not on...is that true? Otherwise I have no idea what I'm hearing.
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  #15  
Old 08-12-2010, 06:32 PM
98blownranger 98blownranger is offline
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Default Re: who all has rough idle in a 3.0?

mine has a rough idle but with a little gas it is very smooth, I am thinking it may have to do with the motor mounts being soft
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