We have a 98 Sea Ray 210br with a merc 5.7efi tbi and it will SOMETIMES high idle at 1000 rpm when pulling it out of gear! Revving up in neutral and pulling back to Neutral doesn't fix it, shutting the engine down and immediately restarting w/o touching anything brings the idle back to normal 600rpm it seems to only happen when docking where we are in and out of gear ...being it doesn't happen all the time we can't seem to pinpoint anything, even though we have tried to jiggle throttle etc. I had the throttle out to look at it and now sometimes when high idle occurs the usual beep when you turn the key on doesn't occur boat starts fine however. If turn key off and back on beep is there and everything starts normal(maybe shifter needs adjustment after having out but everything is back in original position I did adjust the throttle). We have changed the throttle position sensor and all other sensors that we thought might be related and possibly causing this. Only thing I see might be left causing this is the throttle itself, I had it apart and it seems like a lot of play In it to me but nothing to compare it to. I also noticed that the throttle has like a quarter inch of free play when at cruise down the lake? That wouldn't bother me in neutral but I would think that In gear everything should be tight? Only other thing but I don't think it related is every once in a while my tach will bounce like 200 or so rpm, engine speed doesn't change and tach goes back to where it was this only happens at cruise not at low rpm. Have any of you had an issue like this and figured it out? Any ideas if there is something I'm missing? Do you think I'm on the right track with a bad throttle? If so, what are my options to replace a Quicksilver 3000 classic throttle? Sorry for the long post but we have been chasing this issue for 4 years any help would be appreciated.
