1975 FORD MUSTANG II

Typical onset: 60,000-80,000 mi or 5-7 years if original

Symptoms: sudden no-start with cranking, catastrophic valve/piston contact noise, bent valves requiring head removal, broken camshaft in severe cases

Fix: This is an interference engine — belt failure destroys valves. Even preventive replacement is 3-4 hours due to tight engine bay access and need to align cam and crank timing marks precisely. If it grenades, you're looking at head removal, valve job, and possibly new camshaft. Many shops recommend replacing water pump simultaneously since it's driven by the same belt.

Estimated cost: $400-700 preventive; $1,800-3,200 post-failure with valve damage

Typical onset: 70,000-120,000 mi

Symptoms: steering slop and play, clunking over bumps, fluid leaks at boot seals, complete loss of assist or binding, inner tie rod looseness

Fix: The Pinto-derived rack was marginal when new and wears badly. Inner tie rods fail frequently. Rebuilds rarely last — most techs recommend full rack replacement. It's a 3-4 hour job with alignment. Original parts are NLA; you're using aftermarket which varies wildly in quality.

Estimated cost: $600-1,100

Typical onset: 100,000-140,000 mi

Symptoms: rattling on cold start for first 10-15 seconds, timing fluctuation causing rough idle, check engine light (if retained), sudden loss of oil pressure if chain breaks and jams pump

Fix: The Cologne 2.8L V6 uses a chain, but the nylon cam gear and tensioner wear. Chain slack causes timing retardation. Replacement requires front cover removal, about 6-8 hours due to tight quarters and accessory removal. Always replace timing set, oil pump, and front seal together.

Estimated cost: $800-1,400

Symptoms: visible rust perforation at strut tower attachment points, clunking from front suspension that doesn't respond to bushing replacement, sagging front end alignment that won't hold, cracking in shock tower sheet metal

Fix: This is the killer for rust-belt Mustang IIs. The unibody MacPherson strut towers rust from the inside out, and the front crossmember rails perforate. Once structural rust sets in, repair involves welding in patch panels or replacement towers — 12-20 hours of body shop time. Many cars are totaled by this rather than fixed.

Estimated cost: $2,000-5,000 depending on extent

Typical onset: 80,000-130,000 mi

Symptoms: grinding or howling from rear end, gear oil on inside of rear wheels, oil saturation of rear brake shoes, axle end play

Fix: The 7.5" and 8" rear ends used on these cars develop axle seal leaks that contaminate brakes, then bearing wear follows. Each side is about 2-3 hours: pull axle shafts, replace bearings and seals, replace brake shoes if contaminated. If ignored, you can spin a bearing and damage the axle housing.

Estimated cost: $400-800 per side

Symptoms: rough idle and stalling, hesitation on acceleration, poor fuel economy, hissing sounds under hood, high idle that won't come down

Fix: 1975 was peak malaise-era emissions complexity. These cars have a rats' nest of vacuum lines controlling EGR, air injection, choke pull-off, and distributor advance. The rubber lines get brittle and crack, causing vacuum leaks. The Motorcraft 2150 or Holley 5200 carbs need periodic rebuild or replacement. Budget 4-6 hours to methodically replace all vacuum lines, rebuild or replace carb, and tune properly. Most owners benefit from a vacuum diagram and patience.

Estimated cost: $300-700