Results for "diagnostic port"

Engine Medium varies 271 👍 1

Newmar Motorhome Rough Ride Fix: Suspension & Air Pressure

Noticed my 2013 Newmar still rides incredibly rough through every crack and pothole even after replacing all six air bags. The ride height was never adjusted after the air bag replacement, and I'm worried I might be causing more damage or creating a safety hazard.

I upgraded from a Super C expecting a much smoother ride with the air suspension system, but this feels just as jarring. Am I missing something critical with the suspension setup? Could improper air pressure or ride height settings be causing this rough ride, and what other components should I be concerned about? I don't want to make things worse by continuing to drive it if there's a fundamental issue I'm overlooking. …more

Read answer

General Medium 30 min research 149 👍 0

Best Cummins 6.7 Scan Tools for RV Diesel Diagnosis & DPF Regen (2024

The internet seems to give me six different answers about which scan tool actually works with my 2019 Fleetwood's Cummins 6.7L—am I missing something obvious here? Need comprehensive coverage for reading and clearing fault codes, monitoring engine parameters, and performing forced DPF regeneration cycles.

Considering several options including the Foxwell HD500, Ancel heavy-duty scanners, and various BlueFire/Inline adapters available through different suppliers. Price ranges vary significantly from budget OBD2 adapters to professional-grade diagnostic equipment.

Looking for detailed comparison of available scan tools specifically for Cummins 6.7 applications - both professional-grade and DIY-friendly options. What are the key features, compatibility considerations, and real-world performance differences between the various diagnostic solutions for this engine platform? …more

Read answer

Ac Refrigeration Medium 2-3 hours 114 👍 0

Ford V10 RV Chassis A/C Cycling On and Off at High RPM - Complete Fix

Before highway driving yesterday, my gauge showed 250 PSI on the high side, but every Ford V10 manual says my 2019 Georgetown XL should max at 200 PSI. After completing full refrigerant system service including line replacement, receiver-drier, and expansion valve replacement, followed by proper evacuation and R134a charge to specification (920g), the system operates normally at idle and low RPM conditions.

However, above 2800 RPM during highway driving, the compressor cycles on and off repeatedly. System pressures appear normal during stationary testing. Is this cycling behavior a designed protective feature of the Ford V10 PCM during high load conditions, or does this indicate an underlying issue with head pressure, airflow, or refrigerant charge that requires further diagnosis? …more

Read answer

Product Ranking 8 compared

Best RV Leveling Blocks & Jacks

4.6 (9,800 reviews)

Engine Medium 2-4 hours (including dealer visit) 112 👍 0

Ford F53 Motorhome Key Programming Guide: Security Features & Programming Tips

Apparently my 2008 Ford F53 motorhome is 16 years old and starting to have key programming issues — should I attempt DIY programming or call a locksmith? I just dropped $176 on two new transponder keys for my 2024 Windsport 34R (2022 F53 chassis) because I only had one set and didn't want to get locked out in the middle of nowhere wearing my pajamas and fuzzy slippers (again).

The Ford dealer quoted me another $140-170 to program these fancy chip keys, insisting I'd need to haul my 35-foot house-on-wheels down there for the programming. But the parts guy said "try them first" - and wouldn't you know it, both keys fired right up without any programming!

So what's the deal here? Are these unprogrammed transponder keys going to mysteriously stop working next Tuesday? Did I just dodge a bullet, or am I missing out on some important anti-theft features that actually matter? I'm feeling pretty smug about saving that programming fee, but also slightly paranoid that my motorhome might strand me at the worst possible moment! …more

Read answer

Engine Easy 15 minutes 105 👍 0

5 Star Tuner X4 for Ford V10 RV: Complete Performance & Upgrade Guide

Planning to tune my 2018 Ford 6.8L V10 RV but got quoted $800 for professional tuning and wondering if the 5 Star X4 is DIY-friendly. Specifically want to know about real-world performance improvements - does it actually improve throttle response and shift points? What about fuel economy gains?

Which of the 3 programs works best for RV towing? Is the investment worth it for better drivability or just hype? …more

Read answer

Electrical Medium 1-2 hours 104 👍 0

Ford F53 RV Chassis: All Headlights Out - Complete Diagnosis & Repair

Pulled out my multimeter on this dead F53 headlight situation and I'm getting 12.4V at the relay when every Ford manual says it should read 12.6V. My 1999 Mountain High Pinnacle Class A with 76,000 miles on a Ford F-53 chassis has me stumped - ALL four headlights (both high and low beams) just went completely dead, but here's the weird part: every single other light works perfectly. Taillights, brake lights, turn signals, markers - they're all fine.

When the headlight switch is on, there are no headlights at all, and the blue high beam indicator remains constantly lit. I noticed a strange clicking sound from under the hood about every 20-25 seconds, which continued even after disconnecting the coach and chassis batteries.

I've already replaced the headlight switch thinking that was the culprit, but the same problem persists. No headlights whatsoever when I flip the switch, whether I'm on high or low beam. I'm starting to think it might be the combination switch or maybe a relay with a potential dead short, but I don't want to start throwing parts at this thing without some guidance.

Has anyone dealt with this exact scenario on a late 90s Ford chassis? What should I be checking first? I really need to get this sorted out before my next trip. …more

Read answer

General Medium 1-2 hours 99 👍 0

How to Fix Dutch Star Front Air Bags That Won't Inflate - Height Valve Troubleshooting

I replaced my 2006 Dutch Star height valve but the front air bags still won't inflate, the valve seems stuck, AND the whole front end is sitting way too low. The air pressure gauges look totally normal, but when I try to air up the front bags, they just won't fill up. Instead I'm hearing this whining noise and air is literally coming out of the height control valve exhaust port.

It's like the system thinks something's wrong but I can't figure out what. The bags themselves seem fine, and there's definitely air pressure in the system. What would cause the height valve to dump air instead of letting the bags inflate? This is driving me nuts! …more

Read answer

Engine Medium 2-3 hours 98 👍 0

Onan Code 36 Fix: Complete Troubleshooting Guide for RV Owners

Got my tools spread out and I'm determined to fix this Onan QP 3600 LP generator (Model 3.6KY-26120R) that's throwing code 36 myself — where's the best place to start? The unit starts immediately but shuts down right away. I have plenty of propane and the oil level is fine.

What specifically does code 36 indicate on Onan LP generators? What are the most common causes that would make this code appear? …more

Read answer

Engine Medium 3-4 hours 97 👍 0

Cummins ISL Code 1896: EGR Valve Controller Gaskets & Repair

About to drop $2,800 on my Cummins ISL throwing code 1896 for EGR valve controller out of calibration and wondering if I can tackle this myself. Planning to pull and clean the EGR valve controller to see if that clears it up.

Do I need to order replacement gaskets before I start this job? Want to make sure I have everything on hand before I tear into it. …more

Read answer

Engine Hard Several days to locate parts 92 👍 0

Ford F53 V-10 ECU 7C3A-12A650-DSC Replacement Sources

ECU died on my Ford V10 and the replacement part number 7C3A-12A650-DSC is discontinued from Ford. Salvage yards want $800 for a used one with no guarantee it'll work. Need to find a reliable source for this specific ECU or figure out what alternatives exist. …more

Read answer

Ac Refrigeration Easy 30 minutes 92 👍 0

RV Whirlpool Refrigerator Cycling Every 30 Minutes: Is It Normal? [202

Looked everywhere for answers on my Whirlpool residential refrigerator cycling every 30 minutes—my neighbor says it's normal, RV dealer says it's broken, YouTube says something else entirely. The ambient temperature here is around 65°F, and I have both the fridge and freezer set to the 3rd snowflake setting.

I haven't timed it exactly with a stopwatch, but I keep noticing it kicking on again after what feels like a short time. I'm concerned this frequent cycling might be a sign of a problem or could lead to premature failure. I try to keep the vents clean when I can access them. Should I be worried about this 30-minute cycle pattern, or is this within normal range for an RV refrigerator in these conditions? …more

Read answer

Product Ranking 8 compared

Best RV Air Conditioners

4.4 (8,100 reviews)

Engine Medium 1 hour 91 👍 0

How to Diagnose RV Hard Starting Problems: Fuel System Troubleshooting Guide

RV cranks for 10-15 seconds before finally firing up, and it's getting worse each week. Used to start on the first crank every time. Fuel pressure seems low at the rail but I'm not sure if it's the pump, filter, injectors, or something else entirely in the fuel system. …more

Read answer

Engine Medium 2-3 hours 90 👍 0

How to Install a Tachometer on Ford E-450 RV Chassis - Complete DIY Guide

Woke up to my 2003 Itasca Spirit with Ford E-450 V10 chassis doing something bizarre — engine purrs like a kitten but zero RPM showing on dashboard. The dash doesn't have a factory tachometer, but I'd really like to monitor RPMs when towing and climbing hills.

What are the best aftermarket tachometer options for this setup? Looking for specific mounting solutions and wiring connections that work with the E-450's electrical system. …more

Read answer

Engine Easy 30-60 minutes at dealer 90 👍 0

Ford F53 AdvanceTrac Warning Light: TSB Software Fix for Motorhomes

Already seeing that AdvanceTrac warning light on my F53 motorhome chassis — would this TSB software fix be covered under my extended warranty before I start tearing into it? Because apparently my RV decided it needed MORE personality quirks, right? Now my cruise control won't work (there goes my lazy highway driving), and the hill assist is MIA too.

I'm getting mixed signals here - is this one of those "pull over immediately and call a tow truck" situations, or more of a "well, that's annoying but I can still get to the campground" kind of deal? And please tell me this isn't going to cost me my firstborn child to fix at the dealer! …more

Read answer

Engine Easy 5 minutes setup 90 👍 0

Best OBD2 Scanner for Ford E450 V10 Motorhome: Top 3 Diagnostic Tools

Three different OBD2 scanners are showing 6 active codes on my 2015 Ford E450 V10 motorhome but every manual says this engine should only throw 2-3 max. I've been dealing with intermittent check engine lights and some transmission quirks, but my basic code reader just gives me generic codes that don't tell me much.

I keep hearing about tools like BlueDriver and some Ford-specific software, but I'm not sure what actually works well with these motorhome chassis. I need something that can give me real Ford-specific diagnostics, not just the basic OBD2 stuff. Has anyone found a scanner or diagnostic tool that actually works properly with the E450 V10 setup? I'm willing to learn something new if it means getting better diagnostic capability. …more

Read answer

Loading more Q&A...

You've seen all 44 Q&A articles!