Powertrain & Engine Diagnostics
Does an unexplained dash light or sudden shudder have you wondering what’s going on under the hood? At Kleyn Auto, our master-certified technicians combine decades of experience with cutting-edge scan tools to identify the root cause fast—and fix it right the first time.
Diesel Diagnostics & Repair in Grand Rapids, MI
Modern diesel engines depend on precise fuel delivery and turbo management. Using OEM-level software, we analyze live injector balance rates, boost pressure, DEF system performance, and DPF regeneration history. From high-pressure pump replacements to turbo vane calibration, you’ll leave with restored torque, cleaner emissions, and better fuel economy. Diagnostic scanner findings are explained in plain language, so you understand every line on the print-out before we turn a wrench.
Gasoline Diagnostics & Repair
Gas-powered vehicles develop their own quirks—carbon-clogged intake valves, failing coil-packs, or phantom EVAP leaks. We capture freeze-frame data, perform smoke tests, and run cylinder contribution analyses to pinpoint the culprit. Whether it’s a misfire at idle or a stumble on acceleration, swift diagnostic codes interpretation means fewer parts replaced “just to see” and more confident miles ahead.
Transmission Services & Repairs
Harsh shifts, delayed engagement, or fluid that smells burnt? Our team checks adaptive shift tables, line-pressure data, and clutch-pack wear indicators. We handle complete fluid exchanges, solenoid replacements, valve-body rebuilds, and, when necessary, full unit swaps. Timely service prevents cascading drivetrain damage and keeps your ride smooth—no matter how many gears it carries.
Computer Diagnostics & Repairs
Vehicles rely on a network of modules talking over CAN, LIN, and FlexRay lines. Corroded grounds or a single pin push-out can silence that conversation. We trace short-to-ground faults, reflash outdated ECUs, and perform module programming after replacement. If a battery repair or harness rebuild is required, we do it in-house, eliminating the wait for outsourced electronics work.
ADAS (Advanced Driver Assistance System)
Lane-keep, adaptive cruise, automatic braking—these safety systems depend on millimetre-perfect sensor alignment. After windshield replacement, suspension work, or collision damage, we use calibrated targets to realign cameras and radars to factory spec. A quick road-test proves your forward collision warning, blind-spot detection, and 360-degree view are ready to protect you again.
Engine Repair, Rebuild, Overhaul & Conversion
Sometimes the healthiest choice is major surgery. Whether you need a timing-chain service, a bottom-end rebuild, or a complete conversion from gas to diesel, we’ve got a tech who’s done it before. Precision machining, torque-to-yield fasteners, and blueprint-level measurements ensure the new assembly runs stronger and lasts longer than the old.
What Makes Us Different
Never Say No: We don’t believe in turning customers away. No matter the issue or the urgency, we’ll find a way to get you the service you need and back on the road.
Multiple Bays and Skilled Techs: With 19 service bays and a team of 9 experienced technicians, we can handle multiple vehicles at once, minimizing your downtime without ever sacrificing quality.
Master-Certified Technicians: Most of our team hold Master Certifications, meaning your equipment is being worked on by some of the most qualified professionals in the industry.
Advanced Shop Technology: Our shop is equipped with modern diagnostic and repair technology. From computer-based engine diagnostics to precision alignment tools, we’ve invested in tools that help us work smarter and faster.
Honest, Transparent Pricing: No hidden fees, no surprise charges. We’re always upfront about our pricing, so you know exactly what you’re paying for before we begin the work.
Loaner Vehicles: If you’re here for automotive repairs, we offer loaner vehicles to keep your day moving while yours is in our shop.
Contact Us About Powertrain Testing Now: Call 616-209-7007!
Warning lights and rough shifts don’t disappear on their own. One quick call schedules an in-shop visit. Expect transparent estimates, clear repair timelines, and updates you can actually understand.
FAQs
What Areas Do You Serve For Powertrain & Engine Diagnostics Services?
Kleyn Auto is based at 6549 Wilshere Dr, Jenison, MI 49428, just off of Chicago Dr (M-121). We can be found on the cross Port Sheldon and 28th Ave, Port Sheldon, and Chicago Drive. We are only a few minutes away from the M6 highway for easy access.
As well as Jenison, we also proudly bring our services to: Grand Rapids, MI; Lansing, MI; Jamestown, MI; Kalamazoo, MI; South Bend, Byron Center, MI; MI; Holland, Allendale, MI; MI; Muskegon, MI; Wyoming, MI; Walker, MI; Kentwood, MI; Grandville, MI; Hudsonville, MI; Zeeland, MI; and Grand Haven, MI.
What Happens During A Professional Diagnostic Test?
First, a scan tool captures fault and history codes. Technicians then probe live data—monitoring fuel trims, sensor voltages, and temperature curves—to compare against factory specs. If numbers look suspect, pinpoint tests verify wiring integrity or mechanical condition. Finally, you receive a step-by-step repair plan with cost and timeline projections.
How Often Should I Have an Engine Diagnostics Service For My Car?
Engine diagnostics for heavy-duty diesel trucks should be done annually or at the first sign of reduced performance, warning lights, or fuel inefficiency. Regular checks help detect issues early, improve engine life, and maintain regulatory compliance.
Ready for Answers You Can Trust?
From diesel injector balance rates to computer diagnostics and repairs, one call to 616-209-7007 delivers master-level diagnostics, transparent advice, and repairs that last. Feel confident behind the wheel again—reach out today!
Kleyn Auto
Kleyn Auto Repairs & Services
From routine oil change appointments to pinpointing a stubborn check engine light, our master-certified team handles every make and model. We pair factory-grade scan tools with BG-backed fluid services to extend part life and save you return trips. Need advanced driver support recalibrated after a windshield replacement? Our in-house ADAS calibration bench resets cameras and radar in one visit, so lane-keep and adaptive cruise features stay accurate. You’ll also find same-day brake repairs, battery testing, cooling-system flushes, and precise alignment corrections. While we work, grab a complimentary loaner car and stay on schedule—it’s all about making maintenance effortless for you.
Reviews
Customer Testimonials
"Kleyn goes above and beyond in making sure you get back on the road. They have somehow found a group of a dying breed of people that put in the extra effort to make sure the job is done correctly and quickly."
- Dan
Ned
Jacob
Madison
Miles
Contact & Locations
Contact us
Have questions or need to schedule a repair? Our team at Kleyn Mobile, Kleyn Auto Repair and Kleyn Fire is here to help. Located in Grand Rapids, Michigan, we specialize in reliable, no-nonsense auto, truck and fire truck repair with fast turnaround times and honest service. Give us a call or drop by the shop — we're ready to get you back on the road.