Community Fixes
Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads
Systems
All Issues572Engine162Electrical143Other60Cooling42Body / Interior39Suspension35Transmission28Turbo20Fuel System15Brakes15Exhaust13Sort by:Most DiscussedSystem
Engine36 threads
oil pressure gauge reading incorrectly
Oil pressure gaugeWhat's the huge hose from oil filler cap to block called?Oil gauge dead, and fuel problems with JDM Lexus 550's HELP!+ 33 more threads
Electrical35 threads
alarm system malfunction
Supra will not startAlarm system won't reset or allow car to startStock Alarm Problems! Help!+ 32 more threads
Electrical35 threads
alternator wiring diagram needed
90 mk3 help!!!!MR2 Alternator in 92T -- "drop in"??? How in the heck is this done?Help!! New Alt but still not getting charge!!+ 32 more threads
Electrical34 threads
unknown wiring issue
What is this yellow and black wire by the distributor? (Oil pressure sending unit)Is this suppose to be hooked up to something?Wiring (Again!!)+ 31 more threads
Engine34 threads
oil leak from valve cover gasket
Clutch Problem...?coolant coming out of oil panMajor Oil Leak -where's it coming from?+ 31 more threads
Cooling34 threads
low coolant level in reservoir
Overflow and radiator slowly losing coolant! Help!SPRAYING antifreeze onto the back of motor and firewallbelt broke. Now i have a question+ 31 more threads
Turbo33 threads
engine rebuild with turbocharger upgrade
60-1 CT-26 Not Spinning at idleahh, my 90T is done! (pics)was/is it worth it?+ 30 more threads
Fuel System33 threads
injector clips securing fuel injectors
how to self clean injectors?Who here is using the E-manage?Leaking Injector Advice+ 30 more threads
Engine31 threads
incorrect plug replacement procedure
Trouble Shooting 1989 Supra Turboinjectors maybe??Just put in new plugs.. now it runs like crap+ 28 more threads
Transmission31 threads
difficulty engaging higher gears
Built R154 realistic limitI think my R154 said buh bye tonight4th clutch this year+ 28 more threads
Engine31 threads
blown head gasket
Heard big popCompression test numbers?Over heating still!!+ 28 more threads
Electrical31 threads
high beam dash light failure after wiring change
Switched ground H4 headlights and LED H4's.HOW TO : Make your own Fail box eliminatorTaillamp failure sensor color+ 28 more threads
Transmission31 threads
difficulty removing automatic transmission
engine swap...Motor Pull need help asap!!!!!bellhousing bolts+ 28 more threads
Cooling31 threads
temperature gauge reads erratically
lol, who's supra is this?Car over heating, no frickin clue what's wrongand so the overheating sagas continue+ 28 more threads
Engine30 threads
engine will not start
replaced starter now car won't startJust replaced clutch, now car won't Start!An ongoing battle... With an angry mk3+ 27 more threads
Engine29 threads
incorrect engine timing setting
UP and running but sounds horribleRough idle when warm?timing question+ 26 more threads
Electrical29 threads
fog light bulb replacement
Fog light immediate troubleHOW TO_Fog light mod for 1990+ Canadian Supra.Fog light relay connector Wiring color different than TSRM specs?+ 26 more threads
Turbo28 threads
radiator pipe mismatch with oil cooler
Got my turbo all up and running now, but I have a leak near the rear of car wtf is itDid I destroy my turbo??Hole in oil cooler+ 25 more threads
Engine28 threads
rough idle and misfiring under boost
Just bought a 87 supra no power in boostboost creep with my sp61gtMy problem... Why the hell am I still running mid 15's and getting 15mpg?+ 25 more threads
Electrical27 threads
turn signals hyper-flashing after LED conversion
Fuse box adapter for LED flasher?Turn signals wont workTurn signals dead...why?+ 24 more threads