Liverpool Auto Electrical Specialists

Coding. Programming.
Diagnostics.
Service & Repair.

ECU testing, retrofitting, in-depth vehicle diagnostics and full mechanical repairs. We solve problems other garages can't — based in Liverpool city centre, serving all of Liverpool.

Book a Repair Call 0151 903 8239

4.4/5

Google Rating

32

Reviews

8

Core Services

L9

L3

"If Nav can't fix it, nobody can. Had me a new ECU programmed and fitted within 24 hours at a brilliant cost."
— Liverpoolsanta, Google Review
Same-Day Repairs Fair Pricing All Makes
Now Available

Professional Car
AC Refill & Regas

From £60Same-day appointments available
✓ F-Gas certified technicians
✓ Full recovery & vacuum testing
✓ Latest Ecotechnics AC equipment
✓ Same-day appointments
✓ All makes and models
Book AC Service
Car AC diagnostic equipment connected to engine bay Ecotechnics professional AC regas machine

Our Services

What We Do

Specialist vehicle electronics, diagnostics and mechanical repairs across all makes and models. Transparent pricing, no shortcuts.

01
⚡

Coding

Vehicle module coding to activate features, configure settings, and customise your car's systems to your specification.

02
💻

Programming

Software programming for control modules, key programming, and system updates across all major manufacturers.

03
🔌

Auto Electronics

Full auto electrical diagnostics and repairs — wiring faults, sensor issues, lighting, battery systems and complex electrical problems.

04
🧪

ECU Testing & Repairs

ECU fault testing, repair and replacement. We diagnose and fix ECU issues that other garages often miss or misdiagnose.

05
🔧

Retrofitting

Retrofitting OEM and aftermarket features into your vehicle — bringing newer technology and functionality to older models.

06
🔍

In-Depth Diagnostics

Advanced diagnostic scanning that goes beyond basic code reading to find root causes — not just symptoms.

07
⚙️

Service & Repairs

General vehicle servicing and mechanical repairs carried out properly, at fair and transparent prices.

08
🛠️

Exhaust · Clutch · Engine Rebuild

Exhaust repairs and replacement, clutch and flywheel work, and full engine rebuilds — done right, first time.

Why N&J Autos

Old School Skills,
Modern Technology

We combine hands-on mechanical expertise with the latest diagnostic and programming tools. When you bring your car to us, you'll deal with people who actually understand what's going on under the bonnet.

Get in Touch
🎯

Honest Diagnosis

We tell you what's actually wrong and what it'll cost — before we start. No unnecessary parts, no inflated bills.

⏱️

Fast Turnaround

Many jobs completed same-day or within 24 hours. We know you need your vehicle back on the road.

🏆

We Fix What Others Can't

Customers come to us after other garages have given up. Complex ECU faults, software problems, engine issues — we find the real fix.

📞

Clear Communication

We keep you informed throughout and call you as soon as your vehicle is ready. No chasing, no guessing.

Customer Reviews

What People Say

4.4

32 Google Reviews

"If Nav can't fix it, nobody can. Had a problem with my ECU and he had me a new one programmed and fitted for a brilliant cost within 24 hours. He's the main man."

Liverpoolsanta

3 weeks ago

"Brought my Cupra in with an issue that had been really frustrating. He took the time to explain everything clearly, very honest and professional. Would definitely recommend."

Silmara A.

3 months ago

"The owner was so nice — helped me get started after breaking down, then fixed my car at his shop the same day. All sorted by next morning. Quick and smooth."

Dexter C.

1 week ago

"My timing was fixed here when every other mechanic was saying to change the engine. Old school guys who really know their stuff — the best."

Abduallh A.

1 year ago

"Got in touch after another company installed the wrong software on my Jaguar. N&J Autos got the car back on the road within days. Couldn't recommend them enough."

Domonic

1 month ago

"Great garage, amazing service, got my car in straight away. Work completed super fast, kept me updated along the way. Very friendly and knowledgeable. 100% recommend."

Amy F.

3 months ago

Find Us

Get In Touch

Give us a call or fill in the form. We'll get back to you and get your vehicle booked in.

📍

Address

59-61 Great Richmond Street
Liverpool L3 3BF

📞

Phone

0151 903 8239

🕐

Opening Hours

Mon–Fri: 9:00am – 6:00pm
Sat–Sun: Closed