Dirt Road Auto & Diesel LLC.

06/04/2026

⛽ BUDGET-FRIENDLY FIX: 1993 JEEP WRANGLER ROAD-READY 4 SALE! ⛽

This classic 1993 Jeep Wrangler came into the shop needing some attention on the fuel system. The owner is getting ready to sell the vehicle, so the goal was simple: keep it budget-friendly but make sure the repair is safe, reliable, and completely fixed for the next driver!

Here is how our tech team took care of it:

🛠️ Fuel System Repairs:
* The Problem: Located a broken clamp on the fuel line that was causing issues.
* The Line Fix: Replaced the 5/16" rubber hose stretching from the hard fuel line directly to the fuel tank.
* The Tank Update: Installed a customer-provided fuel filler neck and vent hose to ensure the system seals up perfectly.

We love helping our customers maximize their resale value without breaking the bank! This Jeep is now ready for its next adventure with a fully secured fuel system. Thank you for trusting us with your classic rig!

06/03/2026

🚨 FROM BARN FIND TO PROM RIDE: 1970 CHEVY C20 RESURRECTION! 🚨

This 1970 Chevy C20 came to us after sitting for years with a parasitic draw and a no-start condition, but we dug in deep to get it road-ready just in time for Prom!
Here is a breakdown of the major overhaul our tech team pulled off:

🔧 Getting it Running & Fuel System Overhaul:
Replaced the leaking fuel tank and leaky fuel lines under the cab.
Replaced the seized fuel pump with an OEM equivalent.
Bypassed a cracked metal fuel line under the cab with heavy-duty rubber hose.
Tore down, cleaned, and completely rebuilt the carburetor, which had seized jets, large debris, and missing internal parts.
Replaced the fuel filter twice to clear out years of system debris.

⚡ Electrical & Cooling Fixes:
Fixed incorrect carburetor choke wiring and replaced the undersized HEI battery source wire with a proper -10 wire.
Bypassed a bad neutral safety switch to get it firing up consistently, due to the quick turnaround time required for prom.
Installed a customer-provided key switch facia and a new distributor.
Removed a fire-hazard fan wire and installed a brand-new fan relay kit with a temperature sensor. The fan now kicks on perfectly at 180°!
Flushed out muddy water from the cooling system and cleaned heavy rat nests and dirt from the engine bay.

📊 Gauges & Drivetrain Updates:
Got all stock gauges functioning, though the gas gauge recently started reading empty and will need future in-dash diagnostics (the sending unit tested good).
Resolved 90% of the transmission leak by tightening the pressure line fittings and topped off the fluid.
Verified that the high/low beams, running lights, brake lights, and turn signals are all in full working operation.

📝 Tech Recommendations for Next Time:
Ignition: Recommend new spark plugs and 90-degree plug wire ends (straight ends won't clear the headers), which should clear up a slight remaining stumble.
Gauges: Recommend adding a manual interior coolant temperature sensor, as the stock cluster uses a dummy gauge.
Safety & Maintenance: The body bushings are shot and need replacement, and the exhaust mufflers need turn-downs to direct heat away from the new fuel lines.

We even made sure to leave the original fuel pump in the truck so the customer can rebuild it. Thank you for trusting us with this classic truck project!
&Diesel

06/01/2026

🧩 THE ULTIMATE DIAGNOSTIC PUZZLE: 2001 Ford F-150 5.4L Triton 🧩

Talk about a diagnostic rollercoaster! This trusty 2001 F-150 arrived at our shop with a sudden "crank, no start" condition. The family had owned this truck for over six years without a single major issue, so when it suddenly refused to fire up, they knew it was time for professional eyes.

The customer gave us a 2-hour budget to track down the issue. Our team ended up spending over 3 full days of deep-dive testing, research, and trial-and-error to map out this electrical mystery. Because we believe in true small-town friendliness and fair pricing, we only billed the customer for 3 hours of diagnostic time!

Here is how our master technician cracked the code on this incredibly complex electrical failure:

🛠️ THE FUEL SYSTEM INVESTIGATION
* First Clue: We checked fuel pressure and found it maxed out at a weak 20 PSI. It should safely sit between 40-45 PSI.
* The Test: We used a quick burst of brake cleaner to bypass the fuel delivery. The truck fired up instantly but wouldn't stay running. This confirmed it needed a new fuel pump.
* The Plot Twist: We installed a new fuel pump and the customer-provided fuel filter. But the truck still wouldn't start. Then, a security module code popped up (B2477 Module Configuration Failure).

⚡ THE DEEP ELECTRICAL DIVE
* No Spark, No Fuel: Suddenly, the truck lost both spark and fuel. We noted that the engine was not sending an RPM signal. Without an RPM signal, the PCM (engine computer) does not know when to fire the spark plugs.
* The Oil Intrusion: We pulled the crankshaft position sensor and found the internal connector completely coated in engine oil. The oil had migrated right through the sensor! We replaced it, but the PCM still received zero signal.
* Bypassing the Wires: We hand-ran a bypass harness from the PCM directly to the sensor to eliminate any broken wires. Still no signal. We load-tested every single power and ground to the PCM, GEM module, and Anti-Theft module. Everything passed.

🔍 THE SMOKING GUN
With standard tests exhausted, our tech completely pulled the PCM computer out of the truck and disassembled it on the workbench. Under a high-powered magnifying lens, the hidden truth finally emerged:
* Extensive corrosion hidden deep inside the MOSFET transistors that control the RPM signal.
* Large amounts of corrosion eating away at the circuit board directly underneath the main CPU chip.

The computer was literally rotting from the inside out, making it impossible to process the engine's signals!

🔧 THE RESOLUTION
Repairing the old board was too risky due to the severe internal damage under the chips. The customer approved a replacement PCM, which we swapped in and programmed directly to the truck. While it was on the lift, they also had us install a brand-new-to-him passenger-side running board to freshen up the exterior!

This was easily one of the toughest electrical ghosts we have chased down all year, but persistence pays off. This Ford is finally back to running like a top!

We can handle even the most stubborn electrical issues to get your vehicle back on the road safely.
If you want to keep your truck or family fleet in top shape, let us know!
&Diesel

05/29/2026

💨 MISDIAGNOSIS SAVED: 2021 Ram 2500 Heavy Duty 💨

When this 2021 Ram 2500 work truck arrived with white smoke pouring out of the exhaust, the owner feared the worst: a blown head gasket. A combustion gas test fluid had turned yellow, which usually points to a massive engine teardown. Because this is a crucial work truck, the customer needed it back on the job as soon as possible.

Before tearing into a heavy-duty engine, we always verify the facts first. Our team's careful diagnostic process saved this customer massive amounts of time and money!
Here is what our technicians uncovered and repaired:

🛠️ THE DIAGNOSIS
-The Clue: We checked the live and historical misfire data. There were absolutely zero misfires on any cylinder, which strongly indicated coolant was not entering the engine's combustion chambers.
-The Real Culprit: Knowing this, we suspected a failed EGR (Exhaust Gas Recirculation) cooler instead of a head gasket. Our technician scoped inside the EGR system and found it completely flooded with excessive coolant.
-Bonus Finding: We also discovered a leaking hose tucked away right under the intake manifold.

🔧 THE REPAIR & ROAD TESTING
-EGR Replacement: We pulled the failed unit and installed a brand-new EGR cooler.
-System Check: Once replaced, we re-tested the entire cooling and head gasket system. The issue was completely resolved!
-Custom Hose Fix: Our tech hand-fabricated a brand-new hose under the intake to eliminate the secondary coolant leak.
-Catalytic Converter Watch: We monitored the catalytic converters closely. Because coolant passed through the exhaust, we verified they are working fine right now, but we advised the customer to keep an eye on them down the road.
-Maintenance & Codes: The truck had a stored P0405 code that was not active, meaning the truck's PCM just needs a normal driving cycle to run its tests and clear it out. We also knocked out a fresh oil change to keep the engine healthy.

Instead of a multi-week, multi-thousand-dollar head gasket rebuild, we got this vital work truck fixed correctly, safely, and back on the job site in record time!
&Diesel

05/28/2026

💔 ENGINE BREAKDOWN: 2001 Pontiac Firebird 💔

This classic Firebird came to us on a tow truck after it started making a terrifying, loud noise from the engine bay while running. What makes this extra tough is that this is actually the vehicle's second engine, which was installed just about 6 months ago.

The owner had put a lot of care into it- noticing oil in the coolant, pulling the engine, installing a new rear main seal, and keeping the intake clean. But once it fired back up, that heavy knocking noise started. They brought it to us to find out exactly what went wrong.

Our team ran a complete diagnostic dive into the motor:

🛠️ THE DIAGNOSIS
-Diagnostic Trouble Codes (DTCs): On arrival, we pulled codes for an alternator/generator performance issue (P0620) and a right front wheel speed sensor malfunction (C0040).
-The Investigation: Our technician first noted that the vehicle arrived 1.5 quarts low on engine oil.
-The Smoking Gun: To find the source of the noise, the tech removed the oil filter and cut it completely open. Inside, we found a catastrophic sight: heavy metal shavings, metal chunks, destroyed rod bearing material, and metal debris.

❌ THE VERDICT
-Unfortunately, the internal metal debris confirms catastrophic engine failure. The rod bearings have disintegrated, meaning this Firebird is going to need another replacement engine to safely spread its wings and get back on the asphalt.

It is never the news we want to deliver to a customer who has already put so much work into their car, but we are here to provide honest answers and help them figure out the next steps.
&Diesel

05/27/2026

🔧 TRANSMISSION TRIALS: 2012 Ram 1500 5.7L Hemi 🔧

Imagine getting ready for work, putting your truck in drive, and realizing it is stuck in 4th gear and won't shift! That is exactly what happened to this customer when their Ram went into "limp mode" to protect the transmission.

They tried resetting the system by disconnecting the battery, which worked for a quick drive around the block, but the Check Engine Light came right back on and locked it back into 4th. Local parts stores couldn't read the codes, so the owner wisely had it towed straight to us. Since this is their primary vehicle, we knew we had to get it sorted out fast!Our team got under the hood and deep into the transmission system:

🛠️ THE DIAGNOSIS
-Diagnostic Trouble Codes (DTCs): On arrival, we pulled code P0750 (Low/Reverse Solenoid Circuit) along with a few minor communication and HVAC blend door codes.
-The Root Cause: Our technician diagnosed a low/reverse solenoid malfunction. The culprit? Fluid intrusion inside the electrical connector, causing a direct short circuit in the transmission solenoid pack.

🔧 THE REPAIR & FIXDeep Transmission Work: To fix this, our tech had to drop the transmission pan and completely remove the valve body assembly to access and replace the faulty solenoid body pack.
-Oil Change: While it was in the shop, the customer also had us knock out a fresh oil change to keep that 5.7L Hemi running smooth.

Now this Ram shifts beautifully through every gear, and the owner can reliably get back to work without relying solely on their motorcycle! 🏍️💨

Thank you for trusting us to get your truck back on the road! &Diesel

05/26/2026

🚨 CUSTOMER SPOTLIGHT: 2007 Shelby Mustang GT500 🚨

This beautiful, garage-kept Shelby Mustang came to us with a frustrating puzzle: a "Check Charging System" light flashing on and off, a battery that kept losing voltage, and a habit of dying or bogging out at stops. The owner even tried installing a new radio to stop a suspected parasitic power draw, but the issue remained.

With aftermarket upgrades like an exhaust, throttle body, pulley, cold air intake, and a tune by Boost Performance in Amarillo, this pony car is built to run hard. Driving it to our shop was the longest it had gone without dying! The owner was even considering a custom interior power cut-off switch just to keep the battery from draining.

Our team got straight to work. Here is what our technicians found and fixed:

🛠️ THE DIAGNOSIS
-Diagnostic Trouble Codes (DTCs): We pulled codes for a charging system fault (P0622), low battery voltage (B1676), a rear lamp circuit short (B2528), and a tire pressure sensor fault (B2872).
-The Root Cause: We discovered both the negative and positive battery terminals were dangerously loose. A charging test confirmed the PCM was telling the alternator to charge, but the alternator was putting out exactly 0 volts. Those loose terminals likely spiked and damaged the alternator.

🔧 THE REPAIR & TESTING
-Alternator Replacement: The customer approved a new alternator, which got the charging system pumping healthy voltage back into the battery.
-The Parasitic Draw Hunt: To give the owner total peace of mind, we did a deep-dive draw test. We checked all common Mustang trouble spots.
-The Verdict: Good news! There is NO excessive power draw. The system draws 170mV for the first 30 minutes while the computer modules prepare to rest. After 30 minutes, everything enters a deep sleep mode and drops to a perfectly normal 30-50mV to maintain computer and radio memory.
-Mystery Solved: Those loose, poorly installed battery cables were likely preventing the modules from sleeping properly, causing them to stay awake and drain the battery.
-Bonus Fixes: We tracked down the rear lamp code to a burned-out third brake light bulb and replaced it.

💡 TECH RECOMMENDATION
Because this beast is garage-kept and isn't a daily driver, we recommend keeping it on a quality battery maintainer when it sits for a few weeks. This will naturally preserve the battery life while the onboard computers maintain their memory.

Thank you for trusting us with your pride and joy!
&Diesel

05/25/2026