The Check Engine light on, rough idle, acceleration jerky, what could it be?

sim8t3_170340
Tue, 01 Dec 2020 03:18:11 +0000
Maintenance/Repairs

Hi I got a Toyota 98 Sienna LE Check Engine light comes and goes but mostly stays on I don’t know what the code is on the OBD2, I just recently bought a OBD2 diag, but lost it and my home in in a wildfire, in hindsight should have kept it in the van, just bought another on Amazon should have it on Th. Meanwhile it’s running rough at Idle and kind of jerky when accelerating, I"m trying not to drive too much, only other issue has been a really loud whining from the fan belt mostly when the fan is on with defrost but now without it on. I suspect that the Check engine light and rough idle are separate issues from the fan belt, unless the timing is off maybe the timing belt, my guess would be there is a cylinder issue hopefully it’s just plug needing replacing, any thoughts?

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