Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
The Terminator
Engine/Tuning
New engine - Idleing and accelleration issues
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="ShadowFist" data-source="post: 9354466" data-attributes="member: 42601"><p>I just had a new OEM engine installed and am trying to diagnose some issues with idling and missing/hesitating on acceleration. When I fire it off, it idles fine anywhere from 10 seconds to a minute and then starts to drop RPM's and start stuttering. Also, a loud hissing can be heard from the air filter when this happens. If I raise the RPM's by 50-100 the hissing immediately stops and idle returns to normal for 10-30 seconds and this repeats. </p><p></p><p>I spent a while trying to find a vacuum leak but I haven't been successful yet. The MAF has been replaced as has the IAC valve. An interesting observation is that when the engine is hissing/missing, if I unplug the IAC the hissing immediately goes away but the engine RPM's stay the same. If I plug it back in again, the hissing returns immediately.</p><p></p><p>Any suggestions?</p><p></p><p>Video of hissing/IAC disconnect:</p><p></p><p>[ame="http://www.youtube.com/watch?v=s1MgnuZlkUI"]YouTube- New Engine break in[/ame]</p></blockquote><p></p>
[QUOTE="ShadowFist, post: 9354466, member: 42601"] I just had a new OEM engine installed and am trying to diagnose some issues with idling and missing/hesitating on acceleration. When I fire it off, it idles fine anywhere from 10 seconds to a minute and then starts to drop RPM's and start stuttering. Also, a loud hissing can be heard from the air filter when this happens. If I raise the RPM's by 50-100 the hissing immediately stops and idle returns to normal for 10-30 seconds and this repeats. I spent a while trying to find a vacuum leak but I haven't been successful yet. The MAF has been replaced as has the IAC valve. An interesting observation is that when the engine is hissing/missing, if I unplug the IAC the hissing immediately goes away but the engine RPM's stay the same. If I plug it back in again, the hissing returns immediately. Any suggestions? Video of hissing/IAC disconnect: [ame="http://www.youtube.com/watch?v=s1MgnuZlkUI"]YouTube- New Engine break in[/ame] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
The Terminator
Engine/Tuning
New engine - Idleing and accelleration issues
Top