Vehicle repairing, stalling problem

[Patrick banda]

Hi guys! I have a Toyota premeo with a 4A engine, the problem is when i start it’s running rough but at a normal idling when i put it in gear or when it stalls sometimes even reving it on during idling it stalls. I tried changing the plugs, coils, high tension cables, fuel pump, air cleaner and the throttle body but still it stalls when put in gear or braking. What else could cause this problem

Topic

[Billy]

What are your fuel trims at idle, 2500, and 4000 RPM?

[Patrick banda]

Am not sure about the fuel trims, I don’t have a scan tool

[Billy]

A scan tool costs a lot less than the random parts you’ve thrown at it.

[Author]

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