David is very professional, fair, and knowledgeable! I don't ever leave views about stuff but I feel like this guy deserves one ! I called him in complete panic, I had been turned down by every shop I had called in nac due to being so busy or it was out of their expertise. My car was not staring and doing weird things ! I had already ruled out the battery ! He was able to come to my location later that evening and completely looked over my car , trying to problem solve my issue ! By the end my car was starting and running ! He also spent extra time and educated us what he was doing and why and gave us pointers !
Check Engine Light and Diagnostics
Check Engine Light Diagnosis at Your Door
A trouble code tells you which part of the engine is unhappy and never tells you which part failed, so the code is where a real diagnosis starts rather than where it ends.
At a Glance
- Codes read on the car, not guessed from the dash
- You get told what the code means in plain words
- Tested down to the actual failed part
- Scanned again after the repair to confirm it stayed gone
A Free Code Read Is Not a Diagnosis
A parts counter will read your code for nothing and hand you a part number. That number is a guess. A misfire code names the cylinder and stays silent about whether the cause was a coil, a plug, an injector or a vacuum leak, and those four repairs are not the same price.
What you are paying a mechanic for is the part after the code. The testing that turns one cylinder into one cause.
Why It Gets Scanned Twice
Codes come in three flavors. Current, pending and permanent. A permanent code will not clear just because the fault was fixed, and a pending one can point at the next failure before you feel it.
So the car is scanned before the work and again after, and you hear what changed. Clearing a light is not the same thing as fixing a car, and a light that comes back a week later helps nobody.
Symptoms Without a Light
Plenty of real faults never light the dash. A car that idles rough, hesitates pulling out, or runs fine cold and badly hot can have a clean scan. Those get diagnosed by driving it and testing it, not by waiting for a code.
One customer had already ruled out her battery herself before she called. David went through the whole car that evening, found it, and then spent extra time explaining what he had done and why. Her review is on this site in full.
Warning Signs
When to Call About Diagnostics
- Check engine light on, steady or flashing
- Rough idle or shaking at a stop
- Hesitation or a stumble when you accelerate
- Running worse when the engine gets hot
- Fuel economy has dropped and nothing else changed
- A light that keeps coming back after someone cleared it
Reviews
No start diagnosis
Diagnosis, Tahoe
Customers on This Kind of Job
David is the best!! He works around your schedule. He was able to diagnose what was wrong with my tahoe right away and fixed it. The best of the best!! Will be contacting him from now on.
Questions
Questions About Diagnostics
Is there a charge just to diagnose it?
Diagnosis is real work and it is charged as work. You will be told what it costs on the phone before he drives out, and nothing beyond that happens without you agreeing to it.
My light is flashing. Is that different?
Yes. A flashing check engine light means a misfire bad enough to damage the catalytic converter. Stop driving it and call.
Can you clear the code for me?
Codes get cleared after the fault is fixed, not instead of fixing it.
Also
Other Things D&B Does
Where
Diagnostics Across East Texas
Call About Diagnostics
Tell us the year, make and model, what it is doing and where it is parked. You get a price before anything starts.