Results for "diagnostic"

Engine Medium varies 1,624 👍 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

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Engine Easy 1-2 hours inspection 1,295 👍 0

Ford E450 V10 Reliability: Expected Mileage and Longevity Guide for RV Owners

Nobody prepared me for staring at this 2018 Jayco Greyhawk 29MVP with Ford E450 chassis showing 54,000 miles and wondering if I'm looking at a money pit. The unit appears well-maintained with quality features including auto-leveling, fiberglass roof and nose, plus J-ride suspension. However, the odometer shows 54,000 miles, which exceeds my initial target range.

I need to assess whether this mileage represents significant wear on the E450/V10 drivetrain combination. What is the typical service life expectation for these engines when properly maintained? At what point should mileage become a primary concern versus overall mechanical condition? …more

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Electrical Medium 2-6 hours 453 👍 4

RV Electrical Problems: 12V & 120V Troubleshooting Guide

Around $500 in parts later — replaced the main breaker, cleaned all connections, checked the transfer switch — my 2007 Holiday Rambler Admiral SE still won't recognize shore power.

I'm pretty sure 110V is making it to the rig since I can measure it, but somewhere between the plug and my appliances, something's not happy. Energy management panel is dark too. What's the logical troubleshooting order here? I keep hearing about transfer switches and breaker panels but honestly don't know where to start without making things worse! …more

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Best RV Surge Protectors

4.6 (14,200 reviews)

Engine Hard 4-6 hours 425 👍 0

Ford F53 7.5L RV Won't Start: Fuel Pump Relay Voltage Drop Fix

Woke up to my 1996 Ford F53 7.5L motorhome eating through my patience and wallet with this no-start issue that keeps coming back. It cranks strong but absolutely will not start, and I've been chasing this problem for weeks now. The engine ran fine for about 3-4 minutes one day, then just died and hasn't started since.

I've already done quite a bit of diagnostic work:
- Replaced PCM and distributor
- Fuel pump works when powered directly
- Battery is fully charged
- Checked fuses and relays
- PCM relay voltage drops from 12.2V to 9.3V with key on
- Fuel pump relay only shows 3.3V at pin 86 (should be 12V)
- Inertia switch tested at 1.7V at connector
- ANL 178 fusible link fluctuates between 0.3-0.6V

The engine will only start with starter fluid when the SPOUT is removed. I'm getting only 5.5V at the fuel pump connector.

Has anyone dealt with this specific issue on an F53 chassis? I really need to get this RV back on the road and I'm running out of ideas! …more

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Ac Refrigeration Medium 45 minutes 420 👍 0

Dometic 12V Refrigerator Not Cooling on Battery Power - Complete Troubleshooting Guide

Staring at my Dometic DMC compressor refrigerator that runs perfectly on 12V DC when it's cool but stops cooling completely once temperatures hit 85°F or higher. The unit works perfectly when I'm plugged into shore power at campgrounds - everything stays cold and the freezer compartment keeps items frozen solid. However, when I'm boondocking and running solely on my RV's battery bank, the performance drops significantly. The refrigerator struggles to maintain proper temperatures, and the freezer can't keep things frozen.

I have a relatively new battery setup with what should be adequate capacity for my power needs. The batteries test fine with a multimeter when the refrigerator isn't running, but I'm wondering if there's something I'm missing about power requirements or electrical connections. I've heard that 12V compressor refrigerators can be pretty demanding on battery systems, but I'm not sure what specific issues to look for.

What are the most common causes when a 12V Dometic compressor refrigerator works fine on shore power but fails to cool properly when running on batteries? I want to troubleshoot this systematically before calling in a technician. …more

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Engine Medium 2-4 hours 376 👍 0

Generac 7.5kW Diesel Generator Repair Guide - RV Troubleshooting

Planning to ignore the weird noises from our Generac 7.5kW diesel generator backfired when my wife pointed out I definitely made things worse during my repair attempt. I have a 2007 Monaco with a Generac 7.5kW diesel generator, and yesterday when I tried starting it, the battery was really weak. I probably held the starter button too long - maybe 15 seconds or so - because it was cranking so slowly and I kept hoping it would catch.

Now when I try to start it, I just get a single click and nothing happens. I'm worried I damaged something by cranking it so long with that weak battery. Should I be looking at the starter solenoid or starter motor? Is there anything I can check myself before I have to take it to a repair shop? I'd really appreciate any guidance on troubleshooting this. …more

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Electrical Medium 2-6 hours 366 👍 1

ECM Low Battery Warning RV: Complete Diagnosis & Fix Guide

During a family trip, my 2005 Fleetwood Discovery 39S threw code 168-1 for low ECM battery voltage and went into full shutdown mode—is this dangerous with kids onboard? Engine cut out, transmission selector went dark, ABS warnings everywhere - the whole nine yards. Scared the heck out of me when it happened on the interstate!

I'm seeing this seems to be a thing with these diesel pushers, but I'm drowning in conflicting info online. Some say it's the chassis battery, others blame alternator issues, and I've even seen posts about ECM power supply problems on the Caterpillar engines. What's the actual step-by-step process to track this down? And more importantly, how do I fix it so it doesn't leave me stranded again? Really need a complete walkthrough of what causes this code and the proper repair approach. …more

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Slideouts Medium 2-4 hours 320 👍 2

Power Gear Leveler Won't Retract: Complete Repair Guide

Called Power Gear support and they said press retract after leveling, but my system deployed perfectly and now just sits there doing absolutely nothing. The system appears to receive the retract command since I can hear some activity, but the legs remain extended. The only way to get them up is by engaging the transmission which triggers the emergency retract function.

I need a systematic approach to diagnose this retraction failure. What are the most likely causes when Power Gear levelers deploy normally but won't respond to the retract command, and what's the proper troubleshooting sequence to identify whether it's a solenoid valve issue, wiring problem, or control module failure? …more

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Solar Batteries Medium 2-4 hours 298 👍 0

RC7-GS Inverter AGM Battery Settings: Complete Setup Guide

Replaced my 105Ah AGM battery and now my RC7-GS inverter charger is completely rejecting it like this capacity doesn't exist in its programming.

The charging settings only go from 125Ah up to 1000Ah, with an 'auto' option that supposedly 'learns' my battery but resets every time the low voltage cutoff trips (which feels like cheating, honestly). I'm worried about undercharging or cooking my expensive new AGMs if I pick the wrong setting.

Oh, and while we're talking about things that don't work as advertised - the generator auto-start feature might as well be a myth. Can't even manually start the generator from the RC7 panel. At this point I'm wondering if I should have just stuck with my old setup that actually worked! Anyone know what I'm doing wrong here? …more

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Engine Medium 2-4 hours diagnosis 269 👍 0

RV Engine Stalling & Transmission Issues - Diagnosis Help

Replaced multiple parts but I'm still standing in the auto parts store aisle staring at diagnostic tools with no clue which one I actually need for my RV's stalling and transmission issues. When I'm cruising and let off the gas, sometimes the RPMs drop like a rock, other times they just hang there until I slow down more. That's weird enough, but here's the real kicker - every now and then the whole engine just dies on me when I'm rolling up to a stop sign or red light. Maybe happens twice in 600 miles or so, so it's not constant but definitely not normal either.

I'm wondering if these two issues are connected somehow? Like could whatever's causing the stalling also be messing with how the transmission acts when I let off the throttle? Really hoping someone has seen this combo before because I'm in Germany and finding RV-specific help is tough.

I'm looking for any insights from folks who might know what could cause this - hoping to get to the bottom of this before it becomes a bigger problem! …more

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Engine Medium 3-4 hours 260 👍 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

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Best RV Leveling Blocks & Jacks

4.6 (9,800 reviews)

Electrical Medium 45 minutes 247 👍 0

RV Shore Power Not Working: Complete Troubleshooting Guide

Plugged into shore power at the campground last night and absolutely nothing happened — no lights, no AC, nothing. Breaker on the pedestal looks fine and my neighbor's rig is running perfectly on the same circuit. Starting to wonder if something fried inside the transfer switch. …more

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Electrical Medium 30-90 min 243 👍 0

No 12 Volt Power in RV: Complete Troubleshooting Guide

Turned the key and nothing works on 12 volt — no lights, no water pump, no slides. Batteries show 12.6 volts on the multimeter so they're fully charged. House batteries seem fine but zero power is getting to any of the 12V circuits inside the coach. …more

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Engine Hard 2-3 hours for diagnosis 242 👍 0

1999 F53 V10 Oil in Coolant: Complete Head Gasket Diagnosis & Repair Guide

Called three dealerships about oil contamination in my 1999 Ford F53 V10's coolant system — before I tackle this head gasket nightmare myself. The unit overheated after the oil level dropped significantly, though it still starts and runs without throwing any codes.

Based on the symptoms, I suspect a blown head gasket, but I want to perform proper diagnostic testing before committing to a major repair. What specific diagnostic procedures should I run to confirm whether this is actually a head gasket failure versus other potential causes like a cracked head or block issue?

Looking for a systematic approach to pinpoint the exact problem before I start tearing into this engine. …more

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General Easy 20 min research 233 👍 0

How to Find Reliable RV Repair Shops: Expert Tips & Red Flags to Watch Out For

About every summer my 2004 Adventurer runs like a dream until temps hit 85°F, then it breaks down constantly and no shop can figure out why. The main slide out has been acting up with the HWH hydraulic system, and I honestly don't know enough to fix it myself.

I'm worried about getting taken advantage of since I don't really know what questions to ask or what warning signs to watch out for. I've heard horror stories about people paying huge bills for shoddy work. What's the best way to research and find a reliable shop? Are there specific things I should ask them before I commit to having work done?

Any guidance would be really appreciated - I just want to make sure I'm being smart about this and not walking into a bad situation. …more

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