Toyota grande rpm fluctuating

[Xulfiqar]

You installed used coils?

Why???

[pwuser155672820957]

I bought new coils they did not perform well and were very expensive as well. One coil at toyota costs around 17k. I had one bad coil. After replacing that one coil things got no better. Then i decided to go to sher shah and get some japanese engines coils. Where i found this set of four coils in a good condition for around 14k. My car performs even better than before. I still have the new coil i bought from toyota as a spare

[pwuser156532646969]

I am experiencing similar issue.
Sometimes its normal, but other day or even after other startup, the engine takes more fuel and rpm fluctuate on neutral. Sometimes the rpm stay below 1.8 at 100 but while during rough idling, the rpm stays above 2 at even 80 speed.
Is there anything else you did or find the cause?