Contact
Tell us what it's doing
The more detail you give us — year, engine, when the symptom happens, what's already been replaced — the more accurate the first answer will be.
Call the shop
(951) 392-9639
Fastest way to get a real answer. Ask for a technician.
Email an estimate request
david@asdieselshop.com
Include your VIN or year/engine and any codes you already have.
Visit us
478 N. Scovell St., Unit F, San Jacinto, CA 92583
Serving San Jacinto, Hemet, Perris, Menifee & the San Jacinto Valley.
Hours
- Monday – Friday8:00 AM – 5:00 PM
- Saturday8:00 AM – 2:00 PM
- SundayClosed
Can't drive it in?
Free local towing is included with major repairs. Call before you have it towed somewhere else — we'll coordinate it and start the diagnosis the moment it lands.
Labor is a flat $160.00 per hour. Diagnostic time is credited toward any repair you approve, and nothing gets touched without a written estimate.
Not sure what you need?
Start from the symptom
Diesel & Gas Diagnostics
Check engine, wrench or glow-plug light on
Ford Power Stroke Repair
Coolant loss with no visible leak, or white smoke at idle
Duramax Repair
White smoke and hard start on an LB7
Ram Cummins Repair
Low power with rail-pressure codes
Diesel Engine Rebuild & Replacement
Knocking, ticking or metallic noise under load
Fuel Systems & Injectors
Hard start, extended crank or no start
Turbo, EGR & Emissions
Low power, limp mode or boost fault codes
Performance Tuning & Upgrades
Truck runs out of breath towing a grade
Lift Kits, Suspension & 4x4
Death wobble or wandering steering
Transmission & Driveline
Slipping, flaring or delayed engagement
Brakes, Cooling & Scheduled Maintenance
Squeal, grind or a long brake pedal
Gas Engine & Auto Repair
Check engine light or failed smog
Diesel Engine Repair
Oil or coolant spots where you park
Heavy-Duty Truck Repair
Air pressure building slowly or purging constantly
Diesel Transmission & Fleet Repair
Slipping, flaring or delayed engagement
Fleet Repair & Maintenance
Trucks going down without warning mid-route
Brake Repair & Service
Squealing, grinding or metal-on-metal noise
Smog Check & Emissions
Failed smog test at another station
Oil Change & Scheduled Maintenance
Oil life or maintenance-required light on
Check Engine Light Diagnostics
Check engine, wrench or service light on or flashing
A/C & Heating Repair
Air blows warm or only cools while moving
Battery, Starting & Charging
Slow crank or clicking with no start
Lighting, Lamps & Signals
Brake lights not working or stuck on
Alignment, Steering & Suspension
Vehicle pulls left or right on a flat road
Tires, Wheels & TPMS
Vibration at highway speed
Radiator & Cooling System
Temperature gauge climbing, especially towing or on grades
Exhaust & Muffler Repair
Loud drone, rasp or roar under acceleration
Pre-Purchase Inspection
Buying a used Power Stroke, Duramax or Cummins