I have a 90 model with a 22re in it i found a ground that was bolted to the EGR valve it was running ruff and back firing. I then hooked it up to the head where it goes and i got worse. now it sounds like it is ideling at about 50% and it is backfiring out the exauhst.What is wrong with this truck is it the EGR valve it self?
Year: 1990Make: ToyotaModel: 4x4 truckEngine: 22re
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If you apply vaccum to the EGR valve top vaccum hose can you get the valve to open and close?