Community Fixes
Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads
Systems
All Issues572Engine162Electrical143Other60Cooling42Body / Interior39Suspension35Transmission28Turbo20Fuel System15Brakes15Exhaust13Sort by:Most DiscussedSystem
Electrical10 threads
reverse light wiring harness routing issue
license plate lightingWhere is the connector for reverse lights in the engine??Reverse light electrical wiring / camera.+ 7 more threads
Electrical10 threads
wiring diagram needed for aftermarket ignition switch
Need help with a few last touches.Hks Temsmk3 supra ignition switch panel+ 7 more threads
Electrical10 threads
engine will not turn over
Timing QuestionSupra dead.she lives!+ 7 more threads
Electrical10 threads
small interior accent lighting bulbs
How do I wire up a toggle switch?Light Bulbs, Where to getInterior lights not coming on..+ 7 more threads
Electrical10 threads
cruise control fails to activate reliably
wiring 89+ steering wheel cruise control to an 88Concerns with an '87.Open Vacuum Line+ 7 more threads
Electrical9 threads
air conditioning compressor mounting issue
1990 MK3 7MGE - AC Compressor Bracket Removal7mgte a/c compressorCannot attach airccon compressor to the block (7MGTE)+ 6 more threads
Electrical9 threads
wiring compatibility for aftermarket seats
I feel like giving up guys:(Mk3 Manual Turbo Wiring HarnessJDM 89+ Tails+ 6 more threads
Electrical9 threads
gauge adapter modification for cluster
LOTECH is the absolute worstClock and Cluster modifications projectGauge lights burn out, i cant search yet so please help me.+ 6 more threads
Electrical8 threads
missing fusible link at battery terminal
Few probs help!!Is there supposed to be a fusible link at the positive terminal?Am I dumb for not being able to find an ALT fuse online or in stores??+ 5 more threads
Electrical8 threads
loss of power and no start
Washed engine drowned Plugs now deadim desperate, help guysCar wont start+ 5 more threads
Electrical8 threads
location of engine control unit
ecu locationecu locationelectrical help needed+ 5 more threads
Electrical8 threads
blinking climate control indicator lights
no gauge lights or climate control lightsClimate ControlsClimate Control Questions?+ 5 more threads
Electrical8 threads
blower resistor coil failure in climate module
Need Help Blower Motor Failed And Its Getting Cold Fast!!Injector resistor removal questionHow to fix the blower Fan Resistor Pack+ 5 more threads
Electrical8 threads
difficulty removing interior light fixture
My Tail LightsJust some questionsHow to remove cover over maplights?+ 5 more threads
Electrical8 threads
multiple gauges failing to read any data
guage cluster issuegauge questiondealership found problems+ 5 more threads
Electrical8 threads
coil pack plug pin pulled out
Rebuilding wiring harnessWiring Harness help plz!!seemingly unique code 14+ 5 more threads
Electrical7 threads
cruise control wiring mismatch during steering column conversion
cps problemslights prob. please help88-89 steering wheel conversion+ 4 more threads
Electrical7 threads
gauges not lighting up
gauges wont light up, help , tried the searchNeed help with WiresGauge lights wont turn on+ 4 more threads
Electrical7 threads
fuel pump voltage bypass
Start swicthBypass Clutch Push Start Switch...How?Factory Amp Bypass in a 91+ 4 more threads
Electrical7 threads
battery unable to hold a charge
Could the battery be sooo dead it wont even jump?i really desperatley need help!!!Battery died, need entry...+ 4 more threads