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-   -   575sci Wont return to idle (https://www.offshoreonly.com/forums/general-q/373770-575sci-wont-return-idle.html)

newmansautobody 10-25-2021 07:56 PM

575sci Wont return to idle
 
I recently installed new 871 blowers on my boat, I ran into this issue when we were setting the timing. 1 engine is completely fine, the other will not go below 2000 RPM's if I rev it up to 2500. Shut it off, restart it, idles fine can blip the throttle no problem, returns to idle, can rev up some and it returns to idle, but if I go over @ 2500 it won't come back down unless I shut it off and restart. I replaced the TPS first then both IAC's (with off brand because thats what they had local). Any ideas would be much appreciated. Thanks a lot, Zack

mike tkach 10-25-2021 08:35 PM

make sure the throttle cable is pushing the linkage all the way shut.

newmansautobody 10-25-2021 09:03 PM

We did, it looked like it wasn't, so we adjusted it a little. I can double check it though.

SB 10-25-2021 09:34 PM


Originally Posted by newmansautobody (Post 4810246)
I recently installed new 871 blowers on my boat, I ran into this issue when we were setting the timing. 1 engine is completely fine, the other will not go below 2000 RPM's if I rev it up to 2500. Shut it off, restart it, idles fine can blip the throttle no problem, returns to idle, can rev up some and it returns to idle, but if I go over @ 2500 it won't come back down unless I shut it off and restart. I replaced the TPS first then both IAC's (with off brand because thats what they had local). Any ideas would be much appreciated. Thanks a lot, Zack

This driving on the water or on the trailer ?

payuppsucker 10-26-2021 12:00 AM

Disregard

newmansautobody 10-26-2021 08:00 PM


Originally Posted by SB (Post 4810257)
This driving on the water or on the trailer ?

This is just sitting in the water, not out going down the lake. Not in gear.


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