Community Fixes
Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads
Systems
All Issues572
Engine162
Electrical143
Other60
Cooling42
Body / Interior39
Suspension35
Transmission28
Turbo20
Fuel System15
Brakes15
Exhaust13
Sort by:Most DiscussedSystem
Engine102 threads
rough idle
weird mk3 problemSomeone help. Still cant get the car to idle91 turbo toyota supra+ 99 more threads
Turbo95 threads
low boost pressure from turbocharger
Only boosting to 5psiDIY Boost Leak TesterNeed Help ASAP! I got NO SPOOLING!!!!+ 92 more threads
Cooling85 threads
coolant leak from heater hose
head gasket problemNeed help fast!Replacing the thermostat housing gasket!!+ 82 more threads
Electrical72 threads
engine cranks but will not start
New build, no startCar won't turnover!Problem with the Supra (Code 24, won't start)+ 69 more threads
Engine71 threads
slowly creeping and dropping RPMs at idle
7m-GTE bucking under throttleAccordian Pipe QuestionNeed serious help--car stranded!+ 68 more threads
Other61 threads
power steering pump failure
Power Steering Frothi cannot find the power steering reservoir on my 91 turbo can anybody helpLoss of power steering fluid+ 58 more threads
Engine59 threads
no start after head gasket job
Shorted won’t runNo Start after HG Job..What kind of comon problems MK3 usally have??+ 56 more threads
Electrical58 threads
no brake lights
quick ?; tail light failure box responsible for faulty brake lights?Alternator bug?Brake light problem with a twist....+ 55 more threads
Engine57 threads
white smoke upon startup
I thought the inevitable happened.Burning oil...Sometimes?1987 supra turbo blow-by :/+ 54 more threads
Fuel System55 threads
fuel pressure sensor replacement
Hard Start When Hot Only 87 Turbo Auto Unmodified 65k milesFuel Pumphelp needed for electrical hopefully u guys can help me out+ 52 more threads
Engine55 threads
low oil pressure
Here is how to fix 3 of 4 fundamental problems with 7M oil system7M, you have tried my patience one too many times - I AM DONE WITH YOU!!!High Flow Oil System Troubles+ 52 more threads
Electrical51 threads
wiring harness connection location
megasquirt diy pnp build threadConnector with no place to go ?Modifying 7MGE Engine Harness to use 7MGTE ECU for NA-T Conversion+ 48 more threads
Electrical50 threads
tail light not illuminating
Tail light relayI have NO Tail Lights NEED HELPeasiest LED set up+ 47 more threads
Engine49 threads
rough idle possibly due to vacuum leak
87 Supra mk3 build from calgary Alberta, CALost Vac. Any ideas?HKS ssqv acting a little weird....+ 46 more threads
Engine49 threads
oil leak from crankshaft position sensor
Just bought a 91T 5spd...what did i just get myself into?!My introduction to my car and its problemsEngine Oil stop leak safe?+ 46 more threads
Cooling48 threads
overheating at idle in traffic
Summoning the Supra wizards... probably a BHGits still overheating.....Car Still Overheating!!! Wtf???+ 45 more threads
Cooling48 threads
coolant leak from engine
T3/T4 dyno sheet - 18Psicoolant leak (possible hg?)T-66 on a SSAutochrome manifold. (Project Done) (Pics and review)+ 45 more threads
Turbo48 threads
fuel cut at low boost pressure
What is Causing FC at such low rpm's??dispointing numbers...hks vpc help+ 45 more threads
Suspension48 threads
clunking noise when turning
What's wrong with my brakes?when is rod knock not rod knockPopping at higher rpms?+ 45 more threads
Engine47 threads
rough idle when cold
MkIII NA starts and runs fime remains ar high idle - does not drop back when warmed up.Over fueling on start-idle bouncesCooling system overload.+ 44 more threads
Page 1 of 29