1996 MITSUBISHI GALANT

Typical onset: 80,000-150,000 mi

Symptoms: Sudden loud knocking from crankcase, often starts cold then worsens, Metal shavings in oil, milky appearance on dipstick tip, Loss of oil pressure, oil light flickering at idle, Thrown rod punching through block in worst cases

Fix: The 4G64 suffers from oil starvation to rod bearings due to undersized oil passages and weak oil pump design. Once knocking starts, you're looking at complete teardown: new bearings, crankshaft machining or replacement, often new pistons and rings. Many shops recommend just swapping in a junkyard engine (6-8 hours) versus rebuild (18-25 hours) because machine shop costs add up fast. I've seen more of these engines fail prematurely than stay healthy past 120k.

Estimated cost: $2,800-5,500

Typical onset: 70,000-130,000 mi

Symptoms: Transmission fluid puddles under front of car, near radiator, Harsh shifts or slipping after fluid level drops, Pink/red fluid mixing with coolant in overflow tank (cooler rupture), Transmission overheating, burnt smell from ATF

Fix: The steel cooler lines rust through where they meet the radiator, and the internal radiator cooler can fail letting ATF contaminate coolant—this kills the transmission fast. External line replacement is 2-3 hours including refill and purge. If coolant got into the trans, you're looking at full flush, filter, possibly valve body replacement (add 4-6 hours). I always inspect these lines during any service—they're a ticking time bomb.

Estimated cost: $350-900

Typical onset: 60,000-100,000 mi

Symptoms: Clunking over bumps, especially on turns, Excessive play when prying on tire at 6 and 12 o'clock, Wandering steering, alignment won't hold, In worst case, wheel folds under causing loss of control

Fix: This earned two NHTSA recalls—the ball joint boots tear early and let water in, corroding the stud until it separates. Even post-recall, I see failures. Replace both lower control arms as assemblies (ball joints aren't serviceable separately on these). 2.5-3 hours per side including alignment. Do NOT delay when you feel clunking—I've seen wheels collapse mid-turn.

Estimated cost: $450-750

Typical onset: 90,000-140,000 mi

Symptoms: No-start condition, fuel pump not priming when key turns on, Erratic fuel gauge readings, stuck on full or empty, Intermittent stalling at highway speed, then restarts, Whining noise from rear seat area when pump is dying

Fix: The in-tank pump assembly includes the sender—both typically fail together due to contaminated fuel or just age. Tank drop required, 3-4 hours labor. Always replace the fuel filter (underneath, near tank) at the same time—it's another 0.5 hours and cheap insurance. The '96 had a recall for fuel tank cracking, so inspect the tank itself while it's down.

Estimated cost: $550-850

Typical onset: 70,000-110,000 mi

Symptoms: Harsh clunk when shifting from Park to Drive or Reverse, Vibration at idle that smooths out at speed, Visible sagging of engine/trans when opening hood, Excessive movement felt through shifter when accelerating

Fix: The rear trans mount uses soft rubber that deteriorates from heat and oil contamination (often from the cooler line leaks). When it collapses, the transmission drops and stresses the cooler lines even more—creating a vicious cycle. Replacement is straightforward, 1.5-2 hours with proper support. Check all three motor mounts while you're at it; they often fail together.

Estimated cost: $200-400

Symptoms: White smoke from exhaust, sweet coolant smell, Coolant loss with no visible leaks, needs topping off weekly, Rough idle, misfires on cold start that clear up, Overheating after cooler line or radiator failures

Fix: The 4G64's head gasket doesn't typically fail on its own—it's a consequence of the overheating from cooler line leaks or weak cooling system. Once it blows, you're looking at 8-10 hours labor minimum: head removal, resurfacing, new gasket set, timing belt while you're in there. If it overheated badly, the head may be warped beyond machining limits, requiring replacement. This is often the final straw that totals a high-mileage Galant.

Estimated cost: $1,200-2,200