(04-17-2014, 10:16 PM)fixkick Wrote: 8v is TBI , and all large illegal air leaks cause bad idle.
1200, A.C on, causes fast hot idle as does the P/S overload switch sticking closed. (ECU fast idle pins, set true active)
pure random. hot.
ISC sticking. (clean it)
i dont see how gaskets and seals can leak randomly, but is possible (rare)
when does the 1200 happen, hot engine, but when, fails to drop 800 hot. or pure random 1200, when was 800 say at every traffic light then next light its 1200? like that.
im sure the engine is really hot 180F. normal.
Vaccum tests came out good, no air leaks
With No accessories on, will idle at 800, will almost die at traffic stops, but will catch itself and come back up. While cold or hot (with no accessories on) it[/color] will run at 800 most days, But on some days in the afternoon pure random (weather cold or warm) will run 1200 the whole time.
ISC is new
EGR is new
OX sensor new
Fuel pump and regulator new
TPS new