Hey all first time poster here
I have a 1994 fzj80 Manual and I have been chasing a high idle issue for over a year now. When first started in the morning it runs perfect, no high idle, and then one you start driving and it warms up, or revving it at all, it will high idle between 1500-2200. Eventually it will slowly try to return to idle but it’s no different with aircon on or off, even with the iac unplugged it does the same. I have replaced the ecu, used multiple second hand iac, vaf, tps, removed all vsv and other valves from intake plenum to eliminate vacuum leaks etc. hopefully I explained it enough so some clever Bugga can help, thanks (oil light is the sender being buggered along with oil pressure gauge)
I have a 1994 fzj80 Manual and I have been chasing a high idle issue for over a year now. When first started in the morning it runs perfect, no high idle, and then one you start driving and it warms up, or revving it at all, it will high idle between 1500-2200. Eventually it will slowly try to return to idle but it’s no different with aircon on or off, even with the iac unplugged it does the same. I have replaced the ecu, used multiple second hand iac, vaf, tps, removed all vsv and other valves from intake plenum to eliminate vacuum leaks etc. hopefully I explained it enough so some clever Bugga can help, thanks (oil light is the sender being buggered along with oil pressure gauge)