Medium and Heavy Trucks

Have Truck Repair Questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Medium and Heavy Trucks

How are you i have an allison at-545rm it is not up shifting

Customer Question
hi how are you i...
hi how are you i have an allison at-545rm it is not up shifting on time it will rev out under 50% throttle unless its floored and it shifts perfect! i removed governor it is moving freely. Im thinking modulator?? what are your opinions
Submitted: 1 year ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 1 hour by:
4/29/2016
Technician: supertech52, Heavy Duty Truck Technician replied 1 year ago
supertech52
supertech52, Heavy Duty Truck Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 77
Experience: ASE Certified Technician 32 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Verified
Hi my name is***** and I agree that yes the modulator needs to be adjusted. Hold the throttle all the way to the floor and adjust modulator cable to where it is pulled out to that point. Just so that the modulator cable does not limit throttle travel. Let me know if I can be of any further assistance to you, and thanks for your question. Have a nice day. Sincerely, ***** *****
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
This one does not have a cable it's electronic does that change anything?
Technician: supertech52, Heavy Duty Truck Technician replied 1 year ago
Ha LOL, yes that changes everything. Wow, I apologize, is there a switch on or near the throttle cable?
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
So you mean in a switch near the throttle position sensor? The footpedal because that's electronic too ?
Customer reply replied 1 year ago
Pretty much what is going on is 2nd to 3rd shift is extremely delayed in less under wide-open throttle The motor will run about 2500 RPM some under mid throttle and won't shift in less floored
Customer reply replied 1 year ago
Any other ideas?
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,393
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
Verified
My name is ***** ***** I will assist you with your question today. I'm an independent contractor and I don't get paid until a rating has been made. We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence! Are you having any shifting issues in any other gears at all? Any delayed shifts or shifting later than usual or is this only happening between 2 and 3?__________________________________________________________________________________________________________________________You want a 5 star service and I want to provide a 5 star service. Please consider that I don't know your skill level as well as I can't see, touch, smell, hear the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back. Once an answer is provided, you should see a rating screen. Please rate my personal service to you. The ratings are my personal feedback,they are not the site feedback. Thank you for allowing me to assist you through Just Answer! Jeremy
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
It tends to be a shifting delay from 2/3 to 3/4 under half throttle It will shift fine under full throttle
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Hmmm... Do you have the Allison software by chance to do the adjustments with this transmission being fully electronic? Have you been able to see what the pressure is by chance coming off the pump and to the cooler to see if the pump in the trans is acting up? Any codes coming up for that shift solenoid? Does the fluid show any signs of contamination? How about the filters. When were they changed? Last fluid change out and refill?
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
I do not have the software it is fully electronic? At that year? I was thinking modulator valve and there is no code as far as the diagnosis on the dash and the fluid looks new nothing at all governor is not sticking either are there adjustments on the valve body?
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Yes, that year if I recall the modulator has no cable. It is electronic controlled and the software is needed to make the adjustment. On the valve body, unless you have the Allison tools, I would touch it. That is the valve body that has the little pellets in it and they can be a nightmare to put back in with out that plate that holds them in place from the kit.
Ask Your Own Medium and Heavy Trucks Question
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
The only way I know hoe to adjust them on that year is with the software and the little wrench and the adjuster tool.
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
OK is there any preset adjustments that can be made I'm pretty good at the mechanical side I just don't know the spec and also could the modulator valve be dead causing this issue?
Customer reply replied 1 year ago
If I get line pressures during shift and under load with that help?
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Certainly. If you can get them at idle that will help for I can see if the pump is weak.
Ask Your Own Medium and Heavy Trucks Question
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Do you have the serial number on the Alison by chance?
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 year ago
I could get ahold of it and let you know! Thankyou!
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
You're welcome.
Ask Your Own Medium and Heavy Trucks Question
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
I see you viewed this and this is still showing as an open question due to no positive (3 stars or more) rating. Were you not pleased with my service to you or is there a rating issue? Please let me know if you still need assistance with this, if there is a rating issue, and/or you need more time to respond. I like to make sure all my customers are satisfied since you did pay a deposit for me to assist you, whether I’m paid by a positive rating feedback or not. We can continue where we left off or start over if needed. Also, if you need diagrams, instructions, etc please don’t hesitate to ask.
Ask Your Own Medium and Heavy Trucks Question
Ask Jeremy Your Own Question
Jeremy
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,393
3,393 Satisfied Customers
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

Jeremy is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,139 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,151 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,495 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

3,393 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,195 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

770 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
I HAVE A 2015 Freightliner cascadia DD15 with a headache
I HAVE A 2015 Freightliner cascadia DD15 with a headache code 5246 FMI 15 … read more
roy
roy
Associate Degree
3 satisfied customers
2009 freightliner Detroit 60 14L. Throwing fault code ECU
2009 freightliner Detroit 60 14L. Throwing fault code ECU 128 SID 154 Fail 00. I cant figure out what code this is.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,495 satisfied customers
I have frightlinet detroit series 60 chck engin light on eng
I have frightlinet detroit series 60 chck engin light on cod eng sht hi 128 351 00 and eng sh hi 128 351 03 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
I HAVE COOLANT GETTING INTO OIL ENGINE REBUILT 50,000. MILES
I HAVE COOLANT GETTING INTO OIL ENGINE REBUILT 50,000. MILES AGO WHAT IS CAUSE? … read more
Curtis B.
Curtis B.
Technician
Associate Degree
770 satisfied customers
We have a 2004 freightliner schoolbus. something is going on
we have a 2004 thomas freightliner schoolbus. something is going on with our tail lights. they suddenly stopped working... … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
This is a continuation of OrderID: 17728930-920. Things
This is a continuation of OrderID: 17728930-920 . Things happened and I had to pull off the project for a while. Can you update with the order ID ?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
I have a D6-C with a winch on it. The tag is off of it, if I
I have a D6-C with a winch on it. The tag is off of it, if I send some pictures can somebody identify it.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
Oil pushing out the air dryer on sdp cat. new compressors,
oil pushing out the air dryer on sdp cat. new compressors, changed crank vent filter, happens after engine warms up. doesnt matter if under load or at idle overnight … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
I have 2007 Cat C7 on my Rampage. At idle the port motor was
I have 2007 Cat C7 on my Rampage. At idle the port motor was blowing white smoke. The motor won't rev past 1200 rpm's and now the smoke is black. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,151 satisfied customers
What is the minimum temperature of the engine coolant
What is the minimum temperature of the engine coolant required to start the engine? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,495 satisfied customers
I have these error codes: MID 136 SID 4 FMI 2 and MID 136
hi i have these error codes: MID 136 SID 4 FMI 2 and MID 136 SID 71 FMI 1 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
I have a 2011 mack cxu613 mp8 getting codes: SA 0 SPN
I have a 2011 mack cxu613 mp8 getting codes : SA 0 SPN 1072/3675/647/4811/4813/1265. and all of them FMI 4 Only spn 4811 FMI 2 They come at once Red stop and yellow check engine light… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
I have an 02 international DT466 4300. Had no issues until
I have an 02 international DT466 4300. Had no issues until truck set for 3 months . When I started it engine light came on. Code I retrieved was 1: 3 2033_14A . Can you tell me what that is and how to… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Will turn over but will not start. 2004 int 8600 is Cummins.
Will turn over but will not start JA: What's the make/model/year of your truck? Engine type? Customer: 2004 int 8600 is Cummins JA: Are you fixing your truck yourself? What have you tried so far? Cust… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
The warm engine light came up, 2012 international maxxforce,
As soon as I start the truck the warning sign comes on … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,495 satisfied customers
Shifter split air lines going to trans. got one broke and
Second opinion] shifter split air lines going to trans. got one broke and can't find where it is broke from?????… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,495 satisfied customers
Have a case jx75 need to remove inj. pump need info on how
have a case jx75 need to remove inj. pump need info on how to set crank position … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
Paccar MX13 14 KW T680 passive code has been popping up and
Paccar MX13 14 KW T680 passive code has been popping up and clear believe its the OAT sensor. But, this time it came up as Engine SPN 3556, still showing a mil light and issue on nav pro. But dash say… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,139 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x