Community Fixes
Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads
Systems
All Issues572Engine162Electrical143Other60Cooling42Body / Interior39Suspension35Transmission28Turbo20Fuel System15Brakes15Exhaust13Sort by:Most DiscussedSystem
Electrical5 threads
unknown function yellow wiring harness
what are these wires?Why is this plug different than the others?Fuse box plugs+ 2 more threads
Electrical5 threads
auxiliary fan failure to engage
AFC wont turn offAuxiliary fans will not engageA/C not turning fans on+ 2 more threads
Electrical5 threads
antenna motor replacement
Where Can I Buy A 7MGTE?1989 Supra Antenna Motor/Mast Replacemnet?wtf???? window help+ 2 more threads
Electrical5 threads
headlights open warning light failure
finishing up heater core replacementSolving once and for all (electrical shit)Door and headlights warning light.+ 2 more threads
Electrical5 threads
radio wiring connector type
Radio helpSingle DIN Receiver Optionsstock radio code+ 2 more threads
Electrical5 threads
lamp failure sensor corrosion fix
code 21 appears during*****Light failure sensor 89373-2007087t CA 02 sensor+ 2 more threads
Electrical5 threads
location of starting circuit pins
Where is the starting circuit located?Starter Relay... Where are you...Where is the starter relay?+ 2 more threads
Electrical5 threads
ECU possible failure
this sucks!!!how do i check my ECU?Random Misfire on 1JZ swapped MA70+ 2 more threads
Electrical5 threads
bent A/C belt tensioner bolt
Air conditioner a/c tensioner bolt replacementShift Lever Retainer Seal (HELP)Seat belt retainers+ 2 more threads
Electrical5 threads
timing signal connection method
Problems setting base timing EMU Black 7MGTEtiming light questiontimming light...+ 2 more threads
Electrical5 threads
A/C magnetic clutch not engaging
A/C Magnetic Clutch Not Engagingwhere does this wire goA/C Magnetic Clutch Relay Location+ 2 more threads
Electrical5 threads
stuck lock bolt on stop light switch
Stop light switch lock bolt stuckbrake light question for the smart onesBrake lights stay on, how do I turn them off?+ 2 more threads
Electrical5 threads
TEMS module not activating with wiring
Gauge cluster led mod now signal arrows wont workCode 52..??turn signals+ 2 more threads
Electrical5 threads
part number for electric seat tow plastics
removal of drivers seat, help!help me finding this partAnybody Know How To Hotwire A Power Seat?+ 2 more threads
Electrical5 threads
no power to vehicle after prolonged inactivity
Need Answer Quick!!! 3 Hours!!!no power, need helpAnyone else having problems due to the cold weather?+ 2 more threads
Electrical5 threads
power cut-out after GTE swap
HELP messed something upCar shut off at 40 MPH... Need electrical help.Problems after GTE swap, power cut-out+ 2 more threads
Electrical5 threads
firewall modification for transmission access
Anyone cut the firewall to get to the upper tranny bolts?MK3 wiring help!Amp power cord install in MKIII+ 2 more threads
Cooling5 threads
needs replacement radiator cap
Generic Koyo rad capJDM Motor Differences?rad cape cause overheating?+ 2 more threads
Cooling5 threads
coolant leak from freeze plug
Please help! Can't get frost plug out!Where is the front freeze plug locatedWater getting into oil pan+ 2 more threads
Cooling5 threads
poor idle when wiggling air flow connector
logical question about my e-fansweak heater, air flow7mgte airflow issues+ 2 more threads