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11-29-2017, 12:04 PM
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#1
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Governor issues/p7100
I have a maxed 180 that will throttle up to random rpms. Then stick , i'm thinking the rack is sticking. What could be reasoning for it to idle up like that? Any help appreciated!
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96 dually....money pit
2007 dually work... also money pit
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11-29-2017, 03:29 PM
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#2
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,412
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It could also be just the setting of the governor springs causing it to do that, what springs are you running? Did it used to run fine then just start acting up? Does it seem to do it after it's run awhile or all the time even after first crank?
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11-29-2017, 03:33 PM
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#3
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Name: Yotadzl
Title: Diesel Enthusiast
Status: Not Here
Join Date: Feb 2016
Location: Oregon
Member`s Gallery
Posts: 234
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If the rack is sticking a lot of times the pump/governor will have little to no control over RPM. I have seen this happen when the rack pin breaks and the pin falls into the flyweights bending the governor spring stud. Some times a plunger gets a piece of debris in it and hangs up, although the engine should miss on a cylinder also if that happened. Sometimes you can hear the tappet hammering if the plunger is sticking. Either way the pump should come off and go to someone that knows what they are doing for repair.
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'85 Yota Crawler-2l diesel, custom built VE (by me), custom T25 turbo. Slow but fun! 
'95 Cummins grampa truck, embarrassingly stock
'12 Cummins, deleted
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11-29-2017, 03:40 PM
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#4
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Name: Yotadzl
Title: Diesel Enthusiast
Status: Not Here
Join Date: Feb 2016
Location: Oregon
Member`s Gallery
Posts: 234
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I should have added that its easy enough to pull the plug in the side of the governor housing and rotate the engine so you can look at both sets of springs. It's obvious if the stud is bent. Happens a lot.
__________________
'85 Yota Crawler-2l diesel, custom built VE (by me), custom T25 turbo. Slow but fun!
'95 Cummins grampa truck, embarrassingly stock
'12 Cummins, deleted
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11-29-2017, 08:55 PM
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#5
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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6k springs
__________________
96 dually....money pit
2007 dually work... also money pit
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11-29-2017, 09:07 PM
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#6
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Name: SCHMITTY
Title: Not enough time
Status: Not Here
Join Date: Jun 2012
Location: K beach, AK
Member`s Gallery
Posts: 1,183
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Checked your throttle linkage ?
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stock 94
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11-29-2017, 09:09 PM
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#7
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Yes the linkage is good. What I mean is I can get out of my truck leave it idling and for no reason it will just rev up by itself
__________________
96 dually....money pit
2007 dually work... also money pit
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11-30-2017, 06:27 AM
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#8
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,412
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Back off the gov springs a couple clicks.
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11-30-2017, 06:45 AM
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#9
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Name: turbo2387
Title: Nipple Fluffer
Status: Not Here
Join Date: Jun 2011
Location: Indiana
Member`s Gallery
Posts: 665
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Quote:
Originally Posted by Cummins12v
6k springs
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????? oh my
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11-30-2017, 08:00 AM
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#10
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Name: odieub
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Leitchfield, KY
Member`s Gallery
Posts: 923
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I had similar issue with a set of peak 4ks. Messed with them with motor on stand for days. Add a click take a few out. Remeasure. Pulled my hair out. Then pulled em out put another set in and run like a champ. One of the biggest springs that was inside the oem idler was ground funky was longer and on a angle, didnt match the other one.
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95 1500 rc sb 2wd p7100 24v auto, ats 5 star, suncoast kit, dtt billit input, sperico, fun tire eater. In pieces
95 2500 2wd rclb nv5600 500k 5x.012 ddp 887 pump, #11 plate hx35/40-14cm
16 3500 4wd aisin cclb dually flatbed, toy hauler
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11-30-2017, 08:43 PM
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#11
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by turbo2387
????? oh my
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Idk...I'm just stating what I was told by builder .. I'll try to back them off a couple clicks
__________________
96 dually....money pit
2007 dually work... also money pit
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11-30-2017, 08:45 PM
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#12
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by odieub
I had similar issue with a set of peak 4ks. Messed with them with motor on stand for days. Add a click take a few out. Remeasure. Pulled my hair out. Then pulled em out put another set in and run like a champ. One of the biggest springs that was inside the oem idler was ground funky was longer and on a angle, didnt match the other one.
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I think I might swap them out honestly thanks for the help lol I'm at the pull my hair out point
__________________
96 dually....money pit
2007 dually work... also money pit
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