Kryndon
Proven Member
- 944
- 591
- Jan 10, 2014
-
Bulgaria,
Europe
I made a video of its behavior when turning the key to ACC and then back to ON:
As you can see, it still moves in and out, however it stopped making that longer whirring noise like it used to before. Also, compared to this video of a working one, it doesn't seem to vibrate in place.
I tested all 4 coils and they are within the 28-32 ohm range at ambient temp. As soon as the car warms up the idle starts going absolutely batshit. It would start to jump up and down from 1000 to 1500 rpm twice per SECOND, as if I'm constantly dicking around with the throttle pedal. Sometimes it would almost stall, sometimes it would start climbing RPMS.
I have eliminated all other possible causes such as:
Boost leak
Vacuum leak
TPS
Wiring
Clean Throttle body
Binding Cruise Control
Binding Throttle Cable
I am 99% sure the ISC is bad even though the coils test fine. My engine has also been running much hotter after the rebuild and it's already really hot around here so all the additional heat is maybe causing the ressistance of the internal coils to increase so maybe that's why it's shot. I'm searching for a used one currently but I would appreciate some feedback on what you fellas think based on my video. Thanks in advance!
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As you can see, it still moves in and out, however it stopped making that longer whirring noise like it used to before. Also, compared to this video of a working one, it doesn't seem to vibrate in place.
You must be logged in to view this image or video.
I tested all 4 coils and they are within the 28-32 ohm range at ambient temp. As soon as the car warms up the idle starts going absolutely batshit. It would start to jump up and down from 1000 to 1500 rpm twice per SECOND, as if I'm constantly dicking around with the throttle pedal. Sometimes it would almost stall, sometimes it would start climbing RPMS.
I have eliminated all other possible causes such as:
Boost leak
Vacuum leak
TPS
Wiring
Clean Throttle body
Binding Cruise Control
Binding Throttle Cable
I am 99% sure the ISC is bad even though the coils test fine. My engine has also been running much hotter after the rebuild and it's already really hot around here so all the additional heat is maybe causing the ressistance of the internal coils to increase so maybe that's why it's shot. I'm searching for a used one currently but I would appreciate some feedback on what you fellas think based on my video. Thanks in advance!