Cooling
92% success
Crown Vic overheating at idle
Crown Victoria (1998-2011)
Failing thermostat housing or degraded fan clutch are the leading causes. Coolant temp sensor replacement resolves 18% of cases.
1,240 reports $35–$320
Knowledge Base
Proven fixes. Ranked by what actually worked.
Skip the 18-page forum thread. We aggregate community reports and rank fixes by success rate and cost.
Engine
78% success
Coyote 5.0 ticking on cold start
Mustang GT (2018+)
Typically VCT solenoids or BBQ tick. Most cases resolved by warm-up; severe cases need cam-phaser service.
3,810 reports $0–$4,200
Drivetrain
88% success
370Z grinding 1-2 shift
Nissan 370Z (2009-2020)
Synchros 1-2 are weak. Synchrosleeve fix is community-proven; full trans rebuild for severe cases.
2,140 reports $180–$2,800
Emissions
71% success
P0420 catalyst efficiency code
Universal
Often O2 sensor first, then exhaust leak, finally catalyst. Order matters for cost-effective diagnosis.
8,900 reports $25–$1,200