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Old 04-01-2008, 01:12 AM   #1
ttikalsky
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Default High Idle adjustment

Anyone know how to adjust the high idle on a Detroit 8V92? The cruise works excellent but the high idle increases the RPM by 100. I'd like to adjust so high idle is 900 - 1000 RPM.

Troy
1986 Newell DD 8V92T
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Old 04-02-2008, 01:37 AM   #2
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Interesting question Troy. I am reasonably certain that your engine is a pre-DDEC model. Unfortunately, that leaves several posibilities for type of governors which control the idle speeds. Any idea which type your engine has?

I would suggest that you ask that question on http://autos.groups.yahoo.com/group/DetroitDiesel/

These guys eat, sleep and breathe the two-stroke Detroits. If you are not a member, sign up and they will need your engine ID number which is located on the block on the drivers side.

Your idle speed is good (500-600), high idle should be in the 900-1000 range.
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Old 04-02-2008, 02:22 AM   #3
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Troy, On our 87 8v92 to increase idle turn on cruise and tap the resume switch - holding it down wont work, to decrease tap the set or turn cruise off. if you would like the manual i could e-mail pm if so....

Brian,
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Old 04-02-2008, 05:45 PM   #4
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Thanks Brian, on my '92, fast idle is a dash mounted switch rather than using the cruise control.

On the DDEC models, the computer controls fast idle. This was not the case in the pre-DDEC models.
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PT Cruiser GT with Remco Transmission Pump
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Old 05-14-2008, 02:54 AM   #5
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Thanks 2dogs. Tapping the resume switch helped some. Sometimes the idle would increase a little, sometimes no change and sometimes the idle would slowly climb and keep climbing until I turned it off. My guess is there air valve that allows air to enter the throttle circuit when tapping the resume switch. Because the idle change is erratic I'm guessing the control valve is not opening or closing consistently. Does anyone know where the valve is located for high idle? Can it be serviced?

Troy Tikalsky
Waconia MN
1986 Newell DD8V92
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Old 05-22-2008, 04:35 AM   #6
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Troy, is your air up when you are doing this or building up? I have the 87 manual i would gladly e-mail, dont know how to post... brian
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Old 05-24-2008, 03:59 AM   #7
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Yes, the air is up to full pressure when adjusting. Please email me the manual, thank you!

Troy
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Old 05-24-2008, 06:33 AM   #8
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2Dogs, if you would like me to host the file for you, email me or send me a PM.
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8V92 DDEC-2, HT740
PT Cruiser GT with Remco Transmission Pump
https://newellowner.com/newell-photos/
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Old 05-29-2008, 03:48 PM   #9
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Michael, where did the PM go? or how to find email addresses? i tried to do an attachment but that didnt work. Brian
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Old 05-29-2008, 04:09 PM   #10
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PM's are now located under Quick Links at the top of the page then near the bottom under Miscellaneous.

rvinternet at hughes dot net
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PT Cruiser GT with Remco Transmission Pump
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Old 06-02-2008, 07:59 PM   #11
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2Dogs sent me the scanned pages for the Bendix Cruise Control manual. If have converted those to a single pdf file and placed it on one of my sites for download. If you would like a copy, click here and then save the file to your computer or open it and print it.

Thanks to 2Dogs for making this information available to everyone.
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