Go Back  Offshoreonly.com > Technical > General Q & A
500 HP Intermiten Idle Issue >

500 HP Intermiten Idle Issue

Notices

500 HP Intermiten Idle Issue

Old 08-24-2016, 07:54 PM
  #1  
Registered
Thread Starter
 
Join Date: Sep 2005
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Question 500 HP Intermiten Idle Issue

I have a 2003 Powerquest with 500 HPS: (500 EFI's)


* Intermittingly the starboard engine revs to 1500 RPM (I shut the engine off restart - issue goes away) It will stay at 1500 RPM and will not drop down

* I can be running the boat all day and then when I come off plane - the same issue occurs (Shut to engine down - issue goes away)

* It will happen at no specific time

* I have replaced the batteries, check the battery connections and ground connections

* The ECM modules have been tuned by Arizona speed about 6 yrs. ago

Comments / Possible solutions / Feedback is greatly appreciated

Regards,

Walzman

Last edited by walzman; 08-25-2016 at 10:51 AM.
walzman is offline  
Old 08-24-2016, 08:53 PM
  #2  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,091 Likes on 1,393 Posts
Default

500EFI's ?
SB is offline  
Old 08-24-2016, 09:50 PM
  #3  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

Intermittent vacuum leak will cause high idle on EFI motors.
Trash is offline  
Old 08-25-2016, 10:50 AM
  #4  
Registered
Thread Starter
 
Join Date: Sep 2005
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes 500 EFI's
walzman is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.