Jump to content
Sign in to follow this  
StevoD

2003 import rough idle issues

Recommended Posts

Right so at teeside today I finished a run and come off throttle and the engine struggled to idle

 

Got back to the pits and it idles at like 500rpm on 5.5 cylinders

 

With maf removed it runs just as lump but at 1000rpm

 

We unplugged each coil pack one by one it made no difference in how it idles

 

No codes present

 

Any ideas?

Share this post


Link to post
Share on other sites

I see you have a plenum spacer fitted. Make sure all the bolts are nipped up and there are no loose ones.

Then spray a can of carb cleaner all over the throttle butterfly.

Other than that is sounds ok apart from the obvious struggle as the revs drop low.

Share this post


Link to post
Share on other sites

I can't see vids til I get home. Does it seem like it's running richer? Lamda?

Edited by Aashenfox

Share this post


Link to post
Share on other sites

just to add after shooting them videos and having a little rev it sat at around 700 rpm for about 10-20 minutes without dropping in RPM, Oddly the RPM drop when AC is turned on which is not what it used to do they used to raise a little.

 

and although its idle speed is stable it still seems a bit unbalanced and the exhaust seems aweful poppy/rumbley than before but that might be me stressing out

 

Why when ever i get a fault it seems to be one nobody has ever had before i dont know :lol:

Edited by StevoD

Share this post


Link to post
Share on other sites

I had really rough idle at like 500rpm sounding like it would stall out, fine when driving. Ended up unplugging battery, cleaning throttle body out & then re-fitting it all. Runs perfectly since.

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

350z-uk.com

370z-uk.com

×
×
  • Create New...