Official Forum of the North Carolina FJ Cruisers
 
HomePortalCalendarFAQRegisterLog in

Share | 
 

 1200 RPM idle?

View previous topic View next topic Go down 
AuthorMessage
dmiles1288
Greenhorn
Greenhorn
avatar

Posts : 37
Points : 2324
Join date : 2011-07-06
Age : 28
Location : Concord

PostSubject: 1200 RPM idle?   Sun Jul 21, 2013 11:40 pm

I was having the shuttering issue like Nick, if you know who I'm talking about. If not, let me explain . . . My FJ would start shaking for some weird reason when I was driving. It felt like if you were driving a M/T and was getting to low in a gear. That's the kind of shaking I was getting. Well after all of Nicks problems I found a solution, cleaning the throttle body. It was badly gunked up. Well I solved the issue of the mysterious shutter. But now it's idling at 1200 RPM. I don't remember what it was idling at before I started taking crap apart. It just seems like it's running a little high. What's everyone else's idle at?
Back to top Go down
View user profile http://www.facebook.com/drew.miles
bigdogdewey2
ADMINISTRATOR
ADMINISTRATOR
avatar

Posts : 3697
Points : 6063
Join date : 2011-08-30
Age : 49
Location : High Point, NC

PostSubject: Re: 1200 RPM idle?   Mon Jul 22, 2013 12:02 am

glad you found a solution to the shakyness.  i would say look and make sure you dont have a leak in the intake hose or a connection anywhere along the intake.  also disconnect the battery see if that "flashes" it... if that doesnt work...get a bigger hammer!!
Back to top Go down
View user profile
Speedrye
Trail Guide
Trail Guide
avatar

Posts : 1050
Points : 3419
Join date : 2011-08-30
Location : Stokesdale, NC

PostSubject: Re: 1200 RPM idle?   Mon Jul 22, 2013 8:45 am

There's also a small sensor in the air intake tube that needs cleaning on occasion.  I can't remember what the darn thing is called though.  Be careful since it's very delicate.
Back to top Go down
View user profile
j.dorton
Trail Scout
Trail Scout
avatar

Posts : 110
Points : 1779
Join date : 2013-03-05
Location : Winston Salem, NC

PostSubject: Re: 1200 RPM idle?   Tue Jul 23, 2013 1:27 am

Over time, the computer will adapt to the carbon buildup. When you clean the throttle body, it takes time for the PCM to relearn operation parameters. It's normal, and will go away in a day or so.
Back to top Go down
View user profile
bigdogdewey2
ADMINISTRATOR
ADMINISTRATOR
avatar

Posts : 3697
Points : 6063
Join date : 2011-08-30
Age : 49
Location : High Point, NC

PostSubject: Re: 1200 RPM idle?   Tue Jul 23, 2013 7:49 am

J.dorton thats good to know.  Worth keeping in mind..
Back to top Go down
View user profile
j.dorton
Trail Scout
Trail Scout
avatar

Posts : 110
Points : 1779
Join date : 2013-03-05
Location : Winston Salem, NC

PostSubject: Re: 1200 RPM idle?   Tue Jul 23, 2013 11:36 am

What Speedrye was referring to was the Mass Airflow Meter. When they become debris fouled,  they can cause many driveability issues.  The reasoning for this is there is a very fine filament wire that has a constant voltage applied.  As the airflow across the sample wire increases the resistance will change also. As the resistance rises, and falls, the Powertrain Control Module will interpret that info along with the ambient air temperature to determine the volume of air being introduced into the engine. Typically, a dirty MAF sensor will cause a loss of power, low idle,extended starts ,a check engine light,or any combination of these.
Back to top Go down
View user profile
dmiles1288
Greenhorn
Greenhorn
avatar

Posts : 37
Points : 2324
Join date : 2011-07-06
Age : 28
Location : Concord

PostSubject: Re: 1200 RPM idle?   Wed Jul 24, 2013 1:03 am

Thank you for your help everyone. BUT, the shaking is back. It stopped for 2 days. I cleaned the air sensor when I cleaned the throttle body. It must have something to do with air and the engine though. I guess I'll have to tear it down further this time.
Back to top Go down
View user profile http://www.facebook.com/drew.miles
j.dorton
Trail Scout
Trail Scout
avatar

Posts : 110
Points : 1779
Join date : 2013-03-05
Location : Winston Salem, NC

PostSubject: Re: 1200 RPM idle?   Wed Jul 24, 2013 1:17 am

How many miles?
Back to top Go down
View user profile
dmiles1288
Greenhorn
Greenhorn
avatar

Posts : 37
Points : 2324
Join date : 2011-07-06
Age : 28
Location : Concord

PostSubject: Re: 1200 RPM idle?   Thu Jul 25, 2013 1:15 am

Around 170,000.
Back to top Go down
View user profile http://www.facebook.com/drew.miles
j.dorton
Trail Scout
Trail Scout
avatar

Posts : 110
Points : 1779
Join date : 2013-03-05
Location : Winston Salem, NC

PostSubject: Re: 1200 RPM idle?   Thu Jul 25, 2013 7:25 am

How long since you have changed the plugs?
Back to top Go down
View user profile
dmiles1288
Greenhorn
Greenhorn
avatar

Posts : 37
Points : 2324
Join date : 2011-07-06
Age : 28
Location : Concord

PostSubject: Re: 1200 RPM idle?   Thu Jul 25, 2013 3:58 pm

I've never changed them. BUT Toyota changed the plugs on Nick's FJ and it didn't solve the problem. I just don't want to spend $ where it doesn't have to be spent.
Back to top Go down
View user profile http://www.facebook.com/drew.miles
j.dorton
Trail Scout
Trail Scout
avatar

Posts : 110
Points : 1779
Join date : 2013-03-05
Location : Winston Salem, NC

PostSubject: Re: 1200 RPM idle?   Thu Jul 25, 2013 4:51 pm

Those plugs are scheduled for replacement every 30k  miles.  They are only a couple bucks apiece for OEM.
Back to top Go down
View user profile
Sponsored content




PostSubject: Re: 1200 RPM idle?   

Back to top Go down
 
1200 RPM idle?
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» 1200 km service
» Bandit 1200 Clutch Upgrade
» Bandit 1200 bits
» 2004 Banit 1200 Ltd Ed. Colours
» 1200 jetting and ignition

Permissions in this forum:You cannot reply to topics in this forum
NCFJ Cruisers :: The Garage :: Shop Talk-
Jump to: