OUTLINE, TROUBLESHOOTING GUIDE
E2-3spec tableMTX (manual) vs ATX (automatic transaxle) variants differ in radiator core size and coolant-fan motor (single-speed MTX vs Low/High ATX).
SPECIFICATIONS
Specifications
Cooling system
Unit
MTXWater-cooled, forced circulation
ATXWater-cooled, forced circulation
Coolant capacity
UnitL {US qt, Imp qt}
MTX7.5 {7.9, 6.6}
ATX7.5 {7.9, 6.6}
Water pump
Type
Unit
MTXCentrifugal
ATXCentrifugal
Water pump
Water seal
Unit
MTXUnified mechanical seal
ATXUnified mechanical seal
Thermostat
Type
Unit
MTXWax, bottom-bypass
ATXWax, bottom-bypass
Thermostat
Opening temperature
Unit°C {°F}
MTX80–84 {176–183}
ATX80–84 {176–183}
Thermostat
Full-open temperature
Unit°C {°F}
MTX95 {203}
ATX95 {203}
Thermostat
Full-open lift
Unitmm {in}
MTX8.5 {0.33}
ATX8.5 {0.33}
Radiator
Type
Unit
MTXCorrugated fin
ATXCorrugated fin
Radiator
Cap valve opening pressure
UnitkPa {kgf/cm2, psi}
MTX73.5–102 {0.75–1.05, 10.7–14.9}
ATX73.5–102 {0.75–1.05, 10.7–14.9}
Radiator
Core size
Width
Unitmm {in}
MTX690 {27.2}
ATX647 {25.5}
Radiator
Core size
Height
Unitmm {in}
MTX350 {13.8}
ATX390 {15.4}
Radiator
Core size
Depth
Unitmm {in}
MTX25 {0.98}
ATX25 {0.98}
Radiator
Fin pitch
Unitmm {in}
MTX1.3 {0.051}
ATX1.3 {0.051}
Coolant fan
Type
Unit
MTXElectric
ATXElectric
Coolant fan
Blade
Outer diameter
Unitmm {in}
MTX340 {13.39}
ATX340 {13.39}
Coolant fan
Blade
Number
Unit
MTX5
ATX5
Coolant fan
Motor
Fan speed
Unit
MTX—
ATXLow / High
Coolant fan
Motor
Current
UnitA
MTX11.0
ATXLow 12.0 / High 16.8
Coolant fan
Motor
Speed
Unitrpm
MTX1,750
ATXLow 1,650 / High 2,060
TROUBLESHOOTING GUIDE
Troubleshooting Guide
Overheating
Possible CauseCoolant level insufficient
ActionAdd
PageE2-5
Overheating
Possible CauseCoolant leakage
ActionRepair
Page—
Overheating
Possible CauseRadiator fins clogged
ActionRepair
PageE2-7
Overheating
Possible CauseRadiator cap malfunction
ActionReplace
PageE2-6
Overheating
Possible CauseCoolant fan malfunction
ActionReplace
PageE2-11
Overheating
Possible CauseThermostat malfunction
ActionReplace
PageE2-9
Overheating
Possible CauseWater passage clogged
ActionClean
PageE2-5
Overheating
Possible CauseWater pump malfunction
ActionReplace
PageE2-10
Corrosion
Possible CauseImpurities in coolant
ActionReplace
PageE2-5