Engine management light on car runs fine

There is some cause for concern - while the engine light is on the management system is switched off and it is running on the get-you-home programme that is likely to shorten the life of the catalytic converter and oxygen sensor.

I would guess you refitted all the 3zz electronics to the 1zz-fe engine. There appears to be significant differences in specification between the two engines and it would have been an unwise conversion without either fitting the 1zz management system or having the 3zz management system remapped by an expert.

It could be any number of things at fault.

Take your car to a workshop and ask them to run a computerised diagnostic test to identify the actual fault. There's many things which can cause a management light to come on. Let a workshop or mobile mechanic look at it.

The electronic traction control (ETC) is on because of a sensor failure. Run fault codes to find out the reason for the misfiring when the light comes on . It may be connected to a limp mode in the CPU to slow down the car when the ETC has a problem

run the fault codes to see which sensors are failing and repair from there.

fully charge battery and make sure everything switched off i.e rear window demist etc and take it for a run to get it up to tempature then park up rev engine at fast idle approx 2750 rpm for 180 seconds then take foot off throttle and allow to idle for 30 seconds this will clear your catalyst and get it up to the 600 degrees needed for it to operate properly this should remove the engine warning light

Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

I have a same problem. need help

I would go with the vacuum sensor because vacuum changes when giving it more pedal. Temperature should not vary immediately .

It could be that your gas tank has some crud in it or the fuel pump is about to go. As well a dirty fuel filter could be culpret and check the airfilter and PVC valve.

needs a bulb