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RPM drop on electric load
ggregorsch
Topic Author
New Member
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Thank you received: 0
05 Oct 2017 08:27 - 05 Oct 2017 08:31#184865by ggregorsch
Hello friends,
New member here.
My car: Jimny 2001 Japan made.
My problem:
With engine at idle, when depressing brake pedal (brake lights on) or when lifting both windows in the same time, the RPM drops from approx 800 rpm at idle at about 350-400 RPM and the car shakes a bit, like trying to stall. The issue is more persistent in cold weather.
I have cleaned the ground points (engine bay and car interior) but still have this problem.
Any suggestions are welcomed.
Thanks in advance!
I'm sorry for posting in the wrong section, maybe the admin will move it to Jimny technical. Thanks!
I forgot to mention but I have cleaned the IAC valve an the PCV valve is brand new (and working).
I've checked the alternator on professional tester and it is in good condition. Battery is brand new.
I am a former Suzuki Samurai user (drove it for almost 8 years) and I'm familiar somewhat with these engines.
It seems that ECU doesn't detect the applied electric load and doesn't increase engine RPM accordingly.
If I use the headlights (even on strong beam), RPM increases for a moment, then drops to normal idle.
Thanks!
Rhinoman wrote: The ECU should detect electrical load, you need to check the inputs to the ECU.
The ECU detects electric loads (headlights, heater fan). RPM drops only when applying brakes or when I lower or close both windows in the same time.
Maybe I have missed a ground spot. Are there any ground connections under the rear bumper or around tail lights?
Thank you!
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