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03-26-2017, 10:06 PM
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#15
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Senior Member
Damon Owners Club
Join Date: Feb 2016
Posts: 537
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gresults - one other thing come to mind. The throttle on the 8.1 if I remember right is electronic. I think they call it the accelerometer or throttle position. It has been awhile. Anyway, When you push on the throttle, there is a electronic signal sent from the pedal, to a position indicator on the steering column. I would research this, and see what you can find.
__________________
2005 Damon Daybreak 3070 Workhorse P32 8.1 eng
Toad - 2006 Chevy HHR Flat Tow
Bluie Ox Tow System and Brakes
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03-26-2017, 10:15 PM
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#16
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,395
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Quote:
Originally Posted by gresults
I had a engine replacement and after picking it up several times for same issue if you push gas petal to floor it will bog down and from then on you can only go about 30-40 if you let up and baby it again you can regain some speed very random
Thanks Donald
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Sounds like your TPS is bad or wiring to ECM from TPS is bad. Has that been checked? 
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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03-26-2017, 10:18 PM
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#17
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Houston, Texas
Posts: 259
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Unsure will have to ask, what is the TPS ..
__________________
2009 Georgie Boy CruiseMaster UFO Donald E. Ethredge
Houston, Texas
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03-26-2017, 10:35 PM
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#18
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,395
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Quote:
Originally Posted by gresults
Unsure will have to ask, what is the TPS ..
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Sorry, years in the biz and we all used the short stuff. TPS = Throttle Position Sensor. Also ECM = Engine Control Module (car guys like to call them something else,  this it truck terms)
A bad TPS will act like you are describing, they are just a glorified potentiometer like the volume knob on the old radios. Get a bad or worn spot and they act up. We had a program on the laptop top observe they movement of the throttle pedal as you pressed down on it. Any good shop should have that.
Good luck.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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03-26-2017, 11:02 PM
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#19
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Houston, Texas
Posts: 259
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I will check with dealer and see if that was something they checked, I was hoping it was something I could check ..
__________________
2009 Georgie Boy CruiseMaster UFO Donald E. Ethredge
Houston, Texas
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03-27-2017, 05:45 AM
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#20
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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I suggest you start with the simple stuff first. Make sure the MAF sensor is clean and dry. It is located immediately downstream from the air filter box. Regarding your RPM question, yes it is limited to 3K or less while in N or P.
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03-27-2017, 07:35 AM
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#21
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Houston, Texas
Posts: 259
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Any chance this would be something I could replace myself and if so anyone have a part number and image where it is located.
__________________
2009 Georgie Boy CruiseMaster UFO Donald E. Ethredge
Houston, Texas
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03-27-2017, 09:03 AM
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#22
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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Quote:
Originally Posted by gresults
Any chance this would be something I could replace myself and if so anyone have a part number and image where it is located.
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The MAF will be immediately behind the air filter box. It is not likely to need replacing, but it can be cleaned by spraying it with MAF cleaner from just about any auto parts store. Sorry I don't have a picture of it as used in the UFO, but a search here will likely turn up several threads on the benefits of cleaning it. You may also want to look at Oemys website, I think it will be listed there, too.
I suppose it is possible that the MAF wiring harness was not connected properly when they put everything back together, and MAYBE that could cause your symptoms, so check the wiring connections, too.
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03-27-2017, 02:13 PM
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#23
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Houston, Texas
Posts: 259
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Well .. New Fuel, Air Cleaner and Cleaned MAF.. so just brought back to dealer to have the TPS checked as my guy can't read it plus I need to see if they pinched Fuel line on my gender as well.
__________________
2009 Georgie Boy CruiseMaster UFO Donald E. Ethredge
Houston, Texas
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03-27-2017, 05:35 PM
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#24
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,395
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No codes coming up? I figured you would have checked that already, but just in case...... 
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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03-28-2017, 07:46 AM
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#25
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Senior Member
Workhorse Chassis Owner
Join Date: Jan 2009
Location: Houston, Texas
Posts: 259
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No Codes
__________________
2009 Georgie Boy CruiseMaster UFO Donald E. Ethredge
Houston, Texas
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03-28-2017, 09:32 AM
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#26
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,395
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I had a time when our 8.1 wouldn't respond to the throttle. It cured itself after turning the key off and back on. Don't know what it was, but I refreshed the ECM with the original program when I got home. I have the Banks intake/exhaust system and also thier programer, so I can reflash it myself. 
I need to pull my doghouse cover off to run some wires and a vacuum line so I can see if the throttle open and closes when I operate the foot pedal when the key is turned on. I'll do that sometime today and report back.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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03-28-2017, 12:23 PM
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#27
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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Quote:
Originally Posted by gresults
Well ......... it plus I need to see if they pinched Fuel line on my gender as well.
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Don: I'm glad to see I'm not the only one here with "autocorrect" issues 
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03-28-2017, 02:03 PM
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#28
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,395
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Checked my throttle valve today and with the ignition on "run" position and engine not running the step motor opens and closes the throttle as I push down and let up the throttle pedal. That's one way you can check out the TPS, wiring and step motor.
Good Luck..
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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Linear Mode
