Jump to content

Idle very high on fuel injected engine.


Recommended Posts

I just did a 7 day trip doing about 150 miles. Not sure if that matters, but anyways. The day before leaving I was at the gas dock. I restarted (I have twin 4.3L ) the engines. I put the port engine in gear and had a small bang from the drive engaging. I first thought drive problem and noticed that engine was at 1800 RPMs. The next day, Saturday made it home with no problems, both engines ran great.  

Today, after a little reading went after the IAC unit. Mainly I was reading no start or stalling. I pulled the IAC unit off the starboard engine, installed it in the port engine and now it idles fine. Just though I would mention it since everything I read never mentioned high idle.

So new IAC!! 

 

Link to post
Share on other sites

Your problem seems to be random ?  Are both engines now perfect.

I Have Done a advanced throttle shift by accident. ..... Have your linkages checked for sticking. Or looseness. A loose gear shift will allow advancing throttle without the perfect throttle tracking. Had 1 of those.

Link to post
Share on other sites
23 hours ago, cyclops2 said:

Your problem seems to be random ?  Are both engines now perfect.

I Have Done a advanced throttle shift by accident. ..... Have your linkages checked for sticking. Or looseness. A loose gear shift will allow advancing throttle without the perfect throttle tracking. Had 1 of those.

I am waiting for the new part to come in. So the port engine works good now. 

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...
×
×
  • Create New...