I have read and re read what seems like a thousand other posts with the same issue and I have yet to find a solution.
I have done all cruisers tips that pertain to my 90 xj. I have tried everything.
all grounds and connectors are good. all sensors have been replaced and tested.. all within spec.
my symptoms are 300-500 idle that moves up and down maybe 100-200 rpm. it dances between the two lines under the 1
when it does you can hear a change in the engine sound.
No EGR. all new igniton and fuel components minus injectors and fuel lines. except the two at the tank I replaced those.
it doesn't seem to stumble or run weird while driving has great power and drives good. terrible mileage 4.5" lift and 33"x12.5s around 10 mpg in city.
new manifold gasket and all bolts tight.
don't know if its going into open loop. or closed loop?..still not really sure which is which
doesn't appear to be a vacuum leak, plugged all vac ports and sprayed everywhere no change. new injector O rings and throttle body gasket.
whats strange is that if I hold the rpms up, say around 1500-2000. they will still fluctuate.
just looking for random ideas to try. I can hear what kinda sounds like a vac leak from the throttle body might be the throttle shaft? but wouldn't that just cause a slightly higher idle?
really leaning towards ecm failure
who here actually has a renix that runs right? just for comparison.
I have done all cruisers tips that pertain to my 90 xj. I have tried everything.
all grounds and connectors are good. all sensors have been replaced and tested.. all within spec.
my symptoms are 300-500 idle that moves up and down maybe 100-200 rpm. it dances between the two lines under the 1
when it does you can hear a change in the engine sound.
No EGR. all new igniton and fuel components minus injectors and fuel lines. except the two at the tank I replaced those.
it doesn't seem to stumble or run weird while driving has great power and drives good. terrible mileage 4.5" lift and 33"x12.5s around 10 mpg in city.
new manifold gasket and all bolts tight.
don't know if its going into open loop. or closed loop?..still not really sure which is which
doesn't appear to be a vacuum leak, plugged all vac ports and sprayed everywhere no change. new injector O rings and throttle body gasket.
whats strange is that if I hold the rpms up, say around 1500-2000. they will still fluctuate.
just looking for random ideas to try. I can hear what kinda sounds like a vac leak from the throttle body might be the throttle shaft? but wouldn't that just cause a slightly higher idle?
really leaning towards ecm failure
who here actually has a renix that runs right? just for comparison.
