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
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
Electrical4 threads
pressure sensor reading incorrect
Hks Vpc Help!!!!!AEM UEGO Analog vs Digital MAFT Pro Readings are offRev-meter malfunction+ 1 more thread
Electrical4 threads
unused power wire for horn circuit
Lights and horn on with ignition onThe horn causes the headlights to come up! LOLwiring 89t into 87 na?+ 1 more thread
Electrical4 threads
main EFI relay not energizing from ecu
Putting out an S.O.S to those that know the electrical system in the MK3.electric confusionEFI main relay EFI fuse+ 1 more thread
Electrical4 threads
A/C blows cold air after head gasket repair
A/C oddityFinicky AC in my MK3A/C Won't blow Hot air...??+ 1 more thread
Electrical4 threads
special service tool required for cylinder cover replacement
My shit got towed :(Where do you get "Special Service Tools"?change ignition key+ 1 more thread
Electrical4 threads
difficulty reassembling wire harness clips
Hatch RemovalLittle help?some wire harness help please+ 1 more thread
Electrical4 threads
no start after SAFC installation
SAFC problemAnother SAFC problemwhats this wire, SAFC install+ 1 more thread
Electrical4 threads
difficulty removing sunroof housing
1991 Sunroof diagram??How do close the sunroof when the switch won't work91 Sunroof Motor+ 1 more thread
Electrical4 threads
non-functional cigarette lighter socket
Cig lighter power useCigarette Lighter stopped working?Cigarette Lighter broke, fuse fine?+ 1 more thread
Electrical3 threads
voltmeter reading 6 volts with ignition on
NipponDenso 550's higi impedance on 7m ?charge/brake/tail lights come on, voltmeter peggedReplacing stock boost gauge with voltmeter