ranchhopper Posted May 20, 2016 Share Posted May 20, 2016 My RS has always started and ran like a top but the idle speed varys !st gear idling through a parade it runs 700 RPM a bit high but driving down the road hit the brakes and slow to a stop it goes down to where it should be but will pick back up after a bit. I put a stiffer return spring on the linkage it doesn't help it does surge sometimes idling but most 237s I have ever dealt with did that too. I don't want to turn the idle down for fear it will be to low on the occasion it drops down to where it should be. Quote Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/ Share on other sites More sharing options...
1965 Posted May 20, 2016 Share Posted May 20, 2016 Ive always blamed the air ride cab for the fluctuations Quote Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/#findComment-333975 Share on other sites More sharing options...
j hancock Posted May 20, 2016 Share Posted May 20, 2016 May be some worn components in the pump governor. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/#findComment-333979 Share on other sites More sharing options...
theakerstwo Posted May 21, 2016 Share Posted May 21, 2016 Sounds like its idling off of the linkage being not able to return all the way.Check the lever on the governor and see that it returns against the idle stop crew an has some movement to spare.If its not against the cab then it needs to come off for the governor repairs. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/#findComment-333983 Share on other sites More sharing options...
ranchhopper Posted May 21, 2016 Author Share Posted May 21, 2016 OK that will be a starting point. Quote Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/#findComment-333998 Share on other sites More sharing options...
fjh Posted May 21, 2016 Share Posted May 21, 2016 Yup the lever has springs holding it in each direction look closely at it if there is a gap where the springz contact the lever replace the lever How ever by what your describing it my be worn internal governor parts, Quote Link to comment https://www.bigmacktrucks.com/topic/45294-question-about-varying-idle-speed/#findComment-334019 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.