TSRM/MK3 Supra/Community Fixes
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Community Fixes

Common problems grouped from confirmed-fix threads on SupraForums — 572 issues across MKIII threads

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Engine11 threads

poor cold start running due to bad temperature sensor

Replacement connector for cold start injector time switchstrange cranking issueCalifornia Smog Fail+ 8 more threads
Engine11 threads

vehicle accelerating significantly less than expected

Hesitation..help!Idle low after rev need ideasAnother rebirth!!+ 8 more threads
Engine11 threads

running super rich with black smoke

HELP! Black smoke and extreme hesitation under full boost!!!New Mk3T running SUPER rich, help me diagnose.7m-gte Stalls and hesitates during acceleration / black smoke on throttle *PICS*+ 8 more threads
Engine10 threads

lack of oil squirters affecting cooling

Mobil1 75W-90 Gear OilCar is broken pretty bad, need helpWhats in you Tranny!? (oil wise)+ 7 more threads
Engine10 threads

needs oversized crankshaft thrust bearing

Bad News From Machine Shop(Didn't see this coming)CPS internal oil seal part numberhelp ordering toyota rod/main bearings+ 7 more threads
Engine10 threads

idle speed control valve check valve replacement

Idle contro air valveISCV Check Valve and Seal (grommet) Same as MK4?ISC problem im pulling my hair out over.+ 7 more threads
Engine10 threads

rod knocking sound heard at multiple RPM ranges

FUCK! (engine problems)Well, she's dead... what do I do??Can someone give a positive diagnosis: video+ 7 more threads
Engine10 threads

starting issues due to worn starter load contacts

1988 Supra 7MGTE shuts off after starting: Downpipe crack and check engine light?TPS adjustment helpMajor Starting Issues. HELP LEASE+ 7 more threads
Engine10 threads

turbo bypass valve not opening enough at high throttle

High idleno compresson on built motor?Stock Bypass Valve Vs. Aftermarket BOV. Please Help+ 7 more threads
Engine10 threads

difficulty installing ARP head studs

what sizelost nutNeed quick answeer please...+ 7 more threads
Engine10 threads

running lean at idle and cruise

Stubborn 7mgte - lean idleVPC Nightmare need HELP!!!!Lex AFM and 550cc Inj. Running Lean?+ 7 more threads
Engine9 threads

valve shims needed

Valve shimsWhere to buy OEM or aftermarket Valve Shims?Help! Ferrea Valve Spring Retainers+ 6 more threads
Engine9 threads

unknown engine firing order

Wrong firing order?? what the hellFiring order....HELP what the fireing order+ 6 more threads
Engine9 threads

engine failure after removal

pulling motor, quick questionthe last piecea340e removal+ 6 more threads
Engine9 threads

harmonic balancer replacement needed

Harmonic Balance Bolt BROKE!!!Crankshaft pulley removal..1986.5 MK3 Supra "Harmonic Balancer/Damper"+ 6 more threads
Engine9 threads

disintegrated valve cover material

valvecover boltsValve cover bafflesMy valve cover bolt snaped!!! what to do?+ 6 more threads
Engine9 threads

difficulty removing oil filter

How do i get the oil filter off???Oil filter stuck real good need helpCan you please look at this.. Fuel pump filter issue??? (Pics inside)+ 6 more threads
Engine9 threads

incorrect coolant hole thread size on CHRA

What size adapter is needed for Oil Presure Sender?7mgte oil feed fitting.fitting for installing oil pressure and oil temp gauge?+ 6 more threads
Engine8 threads

engine cuts out at steady 1800 RPM

MAF translator problemHelp with another problem with the supra PLEASE1.5JZ cuts out HELP+ 5 more threads
Engine8 threads

shifting difficulty from first to second when cold

N/A stumble on start.Is my cold start injector working properly?MK 111 transmission issues+ 5 more threads