welcome. !!!! gee you did everything, nice work. nice tuneup job!
plug gap at 0.028" and not .045 out of the box is always wrong.?
stuck rich, it is at 20mpg, that is bad, 28 is possible.
code 12 , means it not in limphome ,
the wires connected to the fuel injector pair are not, hacked? monkeyed with?
its not and air leak this car only races idle speed with that, and at perfect Air fuel ratios, with that.
if it has full power the cat is not melted inside.
its not the ISC its only for idle controls.
o2 wiring? is one suspect ( the 1 wire sensors are not very good, the ground can fail easy, find a way to ground the manifold with say 12-15gauge wire to the battery to body ground lug, making this o2 senors ground far better.... and check all grounds in the engine bay,there all with lugs, to body etc.
the issues is, why is the ECU over injecting.
is it ECU inputs or the injector leaking (its not) or wires to it messed up.
input are o2, and MAP
make sure the MAP sensor hose and nipples are all clear and no cracks.
see this complex loop thing at map, that loop is only so when water freezes inside one side can work, cute now? under special freezing conditions.
the manifold port there on the map can clog, check it very carefully even clean and blow test it.
Gasses from EGR+PCV can clog things here.
we can test the map at key on , then idle and gunning throttle easy want to? ,ask.
![[Image: 89-vacl-map1.jpg]](https://fixkick.com/sensors/89/89-vacl-map1.jpg)
plug gap at 0.028" and not .045 out of the box is always wrong.?
stuck rich, it is at 20mpg, that is bad, 28 is possible.
code 12 , means it not in limphome ,
the wires connected to the fuel injector pair are not, hacked? monkeyed with?
its not and air leak this car only races idle speed with that, and at perfect Air fuel ratios, with that.
if it has full power the cat is not melted inside.
its not the ISC its only for idle controls.
o2 wiring? is one suspect ( the 1 wire sensors are not very good, the ground can fail easy, find a way to ground the manifold with say 12-15gauge wire to the battery to body ground lug, making this o2 senors ground far better.... and check all grounds in the engine bay,there all with lugs, to body etc.
the issues is, why is the ECU over injecting.
is it ECU inputs or the injector leaking (its not) or wires to it messed up.
input are o2, and MAP
make sure the MAP sensor hose and nipples are all clear and no cracks.
see this complex loop thing at map, that loop is only so when water freezes inside one side can work, cute now? under special freezing conditions.
the manifold port there on the map can clog, check it very carefully even clean and blow test it.
Gasses from EGR+PCV can clog things here.
we can test the map at key on , then idle and gunning throttle easy want to? ,ask.
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