Why the DC5 Still Rules — And Why It Occasionally Fights Back
The Acura RSX is still one of the best modern Honda platforms ever built. Lightweight chassis, screaming K-series engines, sharp handling, and enough aftermarket support to bankrupt a 19-year-old with a credit card and a dream.
But the newest RSX models are now over 20 years old. Time eventually comes for every car. Even Hondas. Yes, the internet may act shocked.
Here are the most common Acura RSX problems owners deal with today — especially on higher-mileage Type-S and base models.
1. Third Gear Grind (The Legendary Honda Transmission Issue)
If you own a Type-S and your third gear sounds like two forks fighting in a garbage disposal, congratulations — you’re officially part of the RSX community.
The 6-speed manual transmission in the Type-S is legendary for feel and engagement, but worn synchros are extremely common after years of hard driving and aggressive shifting. The factory transmission ratios are documented in the service manual.
Symptoms
- Grinding entering 3rd gear
- Pop-outs under acceleration
- Difficulty shifting at high RPM
- Worse when cold
Why It Happens
- Aggressive shifting
- Old transmission fluid
- Worn synchros
- Abuse from “VTEC launches” at every stoplight
Fixes
- Replace synchros
- Use genuine Honda MTF
- Avoid bargain transmission fluid from the “trust me bro” aisle
The manual specifically recommends Honda MTF for service intervals.
2. Timing Chain Tensioner Failure
Unlike older Hondas with timing belts, the RSX uses a timing chain setup. Sounds great until the tensioner starts sounding like a coffee can full of bolts.
The K-series timing chain system and tensioner components are outlined in the service manual.
Symptoms
- Rattling at startup
- Metallic ticking
- Check engine light
- Poor timing performance
Why It Happens
- Oil neglect
- High mileage
- Weak factory tensioners on abused cars
Ignoring this can eventually damage the chain guides or cause timing issues. Which is a very expensive way to learn about preventative maintenance.
3. VTEC Solenoid Oil Leaks
K-series engines love oil pressure. The VTEC system depends on it. Unfortunately, the VTEC solenoid gasket eventually gives up on life.
The VTEC solenoid assembly is shown in the cylinder head diagrams of the factory manual.
Symptoms
- Oil leaks near the cylinder head
- Burning oil smell
- Oil on the transmission housing
- Random VTEC performance issues
Fix
Usually:
- Replace the gasket
- Clean the screen
- Stop pretending oil leaks are “normal Honda behavior”
4. Clear Coat Failure
Early 2000s Honda and Acura paint was… optimistic at best.
Especially on:
- Milano Red
- Nighthawk Black Pearl
- Eternal Blue Pearl
Symptoms
- Peeling roof paint
- Faded hood
- Oxidized spoiler
- Entire car looking sunburned
Mechanically reliable?
Absolutely.
Cosmetically?
Sometimes these things age like gas station sushi.
5. Suspension Wear and Clunking
The RSX suspension setup still handles beautifully today, but worn bushings and struts are extremely common after two decades.
The manual confirms the RSX used:
- Front independent strut suspension
- Rear double wishbone suspension
Common Failures
- Sway bar end links
- Control arm bushings
- Struts
- Ball joints
- Tie rods
Symptoms
- Clunking over bumps
- Loose steering feel
- Uneven tire wear
- Poor alignment stability
Most owners eventually discover:
“Cheap coilovers” and “ride quality” are not usually found in the same sentence.
6. Engine Mount Failure
Factory motor mounts on the RSX are soft and age poorly.
Symptoms
- Excessive engine movement
- Wheel hop
- Harsh clunks
- Vibrations during acceleration
Common Upgrade
Most enthusiasts install:
- Polyurethane mounts
- Upgraded rear motor mounts
Which fixes wheel hop beautifully while simultaneously vibrating every interior panel loose. Balance.
7. Power Steering Leaks
Older RSXs often develop leaks from:
- Steering rack seals
- High-pressure lines
- Pump seals
The service manual confirms the RSX uses a power-assisted rack-and-pinion steering system.
Symptoms
- Whining noise
- Fluid leaks
- Heavy steering
- Steering vibration
Ignoring it long enough eventually turns parallel parking into a gym membership.
8. Valve Clearance Neglect
One of the most ignored maintenance items on K-series engines is valve adjustment.
The factory service manual provides exact valve clearance specs:
- K20A2 Intake: 0.21–0.25 mm
- K20A2 Exhaust: 0.25–0.29 mm
Symptoms
- Ticking noise
- Rough idle
- Loss of power
- Poor fuel economy
Most owners don’t even think about valve adjustments until the engine sounds like a sewing machine full of rocks.
9. Hatch Water Leaks
Very common on older RSXs.
Leak Areas
- Tail light seals
- Hatch weather stripping
- Rear hatch seams
Symptoms
- Wet spare tire area
- Foggy windows
- Mold smell
- Mysterious puddles
Nothing says “premium Acura ownership” like discovering a portable swamp in your trunk.
10. Rust on Northern Cars
While California RSXs generally survive well, Midwest and East Coast cars can develop serious rust.
Common Rust Areas
- Rear quarter panels
- Hatch seams
- Rear subframe
- Suspension mounting points
This becomes especially dangerous on heavily modified cars making more power than Honda engineers ever intended.
Final Thoughts
Despite these common issues, the Acura RSX Type-S remains one of the best enthusiast Hondas ever built.
Why?
Because even after 20 years:
- The K-series still dominates
- The chassis still handles brilliantly
- The aftermarket is massive
- And nothing quite feels like a high-revving Honda with a proper manual transmission
Sure, they leak oil occasionally.
Yes, the synchros complain.
And absolutely, half of them now sound like modified lawn equipment at idle.
But that’s part of the charm. Check out more at www.prostreetonline.com.
