Community Fixes
Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads
Systems
All Issues572Engine162Electrical143Other60Cooling42Body / Interior39Suspension35Transmission28Turbo20Fuel System15Brakes15Exhaust13Sort by:Most DiscussedSystem
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
Engine31 threads
blown head gasket
Heard big popCompression test numbers?Over heating still!!+ 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
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
Engine27 threads
timing belt installation procedure
Timing belt alignmentTiming problem continued. Need EXPERT help!Timing belt issue+ 24 more threads
Engine25 threads
engine misfiring and stalling after sputtering
Need Serious Help. Its been too long!My 7m-gte Is Sputtering And Popping Under Loadcode 52 **video inside**+ 22 more threads
Engine25 threads
damaged heater water port threads on cylinder head
HG job failPitting in Cylinder Headnooo.... need help asap ... sparkplug tread was left in the engine...+ 22 more threads
Engine25 threads
difficulty removing crankshaft pulley
Going to blow up my Supra if I can't get this crankshaft pulley bolt out...searchedCrank Puleynew crank pulley removal question+ 22 more threads
Engine25 threads
dipstick relocation for convenience
Installed Boss 550 Stage 5 today...well sorta :( Also need some advice.Anyone have a part number for the "NEW" Dipstick?oil dipstick tube socket removal+ 22 more threads
Engine23 threads
difficulty removing transmission mounting bolts
where do i get the bolts for engine stand to mount my 7mgte on ?Gas draining clarificationTop 2 tranny bolts.......??+ 20 more threads
Engine21 threads
shifter bearing replacement
Expected Horse Power at the wheels?Rear Wheel Bearing Removal and Installation QuestionDrive train support bearing questions+ 18 more threads
Engine21 threads
possible afm issue
Those with Lexus AFM! Quick help!MY AFM is dead!code 31 after cleaning AFM sensor+ 18 more threads
Engine21 threads
random misfire at idle or high RPM
1JZ Random Misfire at idle, light load, and WOTAFM problemsnumber 1 cyl is missing+ 18 more threads
Engine21 threads
ARP stud clearance on oil pump
Technico oil pump bearingeasyest way to change an oil pump?Bad oil pump+ 18 more threads
Engine20 threads
needs fresh fuel
MKiii Rebuild with lots of Problemswhats up wit mklll gas milageterrible gas mileage since upgrading exhaust, intake, and upping boost+ 17 more threads
Engine19 threads
release bearing over-extension
Carrier Bearing - PITA?Pilot bearing removalPILOT BEARING! pain in the a$$!+ 16 more threads
Engine19 threads
oil leaking into combustion chamber
help with a few thingsLiquid fuel coming out of exhaust.dumping fuel..what could it be+ 16 more threads
Engine19 threads
running rich under boost
New to 7M.... Having issues.Very rich idle. Possibly broke maf or 02 sensorSAFC-2 Help Please+ 16 more threads
Engine18 threads
no start after engine rebuild
Help a noob get his rebuild fired up!!!Motor1987 n/a revvs then stalls immediately + no diagnostic codes light+ 15 more threads