Is your MR2 idling poorly (rough) and IACV is clean, new ignition components not cure?
Hesitation on acceleration and / or with turbo not gaining boost?
Is your MR2 experiencing no starting (but cranks ok) or intermittant starting / engine starts but cuts out?
Experiencing Code 14 error? (No IGF Back)
Has very intermittant flash of CEL light acompanied by any of these other issues?
When Diagnostic port E1 - TE1 linked Orange CEL light is just on solid or not on at all?
Will not rev up past 2000 and at reaching just over 2000 RPM car bucks / cuts back until under 2000 RPM?
MR2 Turbo have no boost / guts?
If so you need an ECU repair.
The Electrolytic Capacitors used in these ECUs are now at end of life.
Electroltic capacitors have a service life of around 10,000 hours at optimum capacitance value and
over time slowly degrade this can be in a few ways:
1, They leak as rubber can seal perishes due to age and electolyte leaks out, this elecotlyte corrodes Copper
like crazy and absorbs moisure from the air which speeds the process up and slowly creeps across circuit board
causing damage and open circuit PCB tracks, in worst case create a conductive path causing PCB to smoulder and burn.
2, They can dry out and go way under speck in value which will cause issues in timing and signal circuits.
3, They internally can gas creating pressure that pops the can off, bulged can top or split vent in tops to release pressure.
MR2 Models Covered.
89661-17280 - MR2 Rev 1 N/A 3S-GE
89661-17290 - MR2 Rev 1 3S-GE A214E A/T (auto)
89661-17310 - MR2 Rev 1 N/A 3S-GE UK Speck89661-17320 - MR2 Turbo Rev 1 3S-GTE JDM Import
89661-17321 - MR2 Turbo Rev 1 3S-GTE JDM Import
89661-17340 - MR2 Rev 2 3S-FE
89661-17350 - MR2 Rev 2 N/A 3S-GE JDM Import (G-Limited)
89661-17360 - MR2 Rev 2 N/A 3S-GE A215E A/T (Auto) JDM Import (G-Limited)
89661-17370 - MR2 Rev 2 N/A 3S-GE UK Speck
89661-17380 - MR2 Turbo Rev 2 3S-GTE JDM Import
89661-17460 - MR2 Turbo Rev 3 3S-GTE JDM Import
89661-17480 - MR2 Rev 3 N/A 3S-GE Import JDM
89661-17500 - MR2 Rev 3 N/A 3S-GE UK Speck
89661-17550 - MR2 Rev 4 & 5 N/A 3S-GE UK Speck
Celica Models Covered.
89661-2B840 - Celica GT4 1997 GT4 (ST205)
Camry / 3VZ-FE, 1MZ-FE, 2GR-FE MR2 V6 Conversions
89661-06020 - Camry 3VZ-FE A/T 1992-1993
89661-06011 - Camry 3VZ-FE M/T 1992-1993