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RPM dips when I put electrical load

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Old Mar 16, 2009 | 11:19 AM
  #1  
elementsk8erq's Avatar
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RPM dips when I put electrical load

Hi just wondering if any of you have experienced your RPM dipping and stalling out when you put electrical load on on it. Sometimes when I close the windows all 4 at the same time the car stalls out, only at idle though. Vehicle currently has P0172 Service Engine Soon light on too dont know it running rich would be the cause? Would a grounding kit of some kind maybe help? Thanks.

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Old Mar 16, 2009 | 11:53 AM
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when I had my mini battery I had a similar issue

if I started my car and immediately turned my headlights on my rpm would occasionally dip below 500 and the car would almost stall...it never stalled and it happened very randomly

I now have a full sized battery and the issue went away...if I put all four windows down my interior light and dash lights will dim slightly but that has always been like that
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Old Mar 16, 2009 | 04:05 PM
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Any car will do that to an extent. It gets worse when you have a mini battery. Do you really need to close all 4 windows at the same time?
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Old Mar 16, 2009 | 05:08 PM
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Originally Posted by elementsk8erq
Hi just wondering if any of you have experienced your RPM dipping and stalling out when you put electrical load on on it. Sometimes when I close the windows all 4 at the same time the car stalls out, only at idle though. Vehicle currently has P0172 Service Engine Soon light on too dont know it running rich would be the cause? Would a grounding kit of some kind maybe help? Thanks.

Evo IX 44,xxx
Mods are...
-Custom Turboback/Straight Pipe
-Injen Air intake
-FIC 750cc Injectors
-Walbro 255LPH Fuel Pump
-Divorced 02 Dump
-Lower Intercooler Pipe
-EIP Accessport Custom Tune
Yes, the rpm dip is completely normal. However the stalling is not. Why did you upgrade your injectors if you dont have an upgraded turbo?
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Old Mar 17, 2009 | 12:36 AM
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I dont know if running rich would cause this because before the tune everything was acting perfect. Now it just seems like every electrical load I put on it causes the car to almost stall out, even unlocking the doors. Do you guys think putting on a grounding kit would help?
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Old Mar 17, 2009 | 02:13 AM
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A grounding kit never hurts, but I'd do a check on the battery and alternator. Check for blown fuses (the larger ones) too.
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Old Mar 19, 2009 | 10:30 AM
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I'd say it's normal. Higher power requirements, put a larger load on the alternator, which puts a load on the engine. Even a 75kw diesel generator will make a sound change when you start up an electric clothes dryer on it (I used to live in the boonies where we lived on nothing but diesel generated power)

Stalling, definitely not normal
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Old Mar 19, 2009 | 10:33 AM
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Originally Posted by Routybouty
Any car will do that to an extent. It gets worse when you have a mini battery. Do you really need to close all 4 windows at the same time?
couldnt have said it better.
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Old Mar 19, 2009 | 01:49 PM
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seem like not enough power it feel like your windows pull all electric and the ecu or spark plug dont have enough charge and stall engine ( well thats what i think )
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Old Mar 19, 2009 | 01:53 PM
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From: Maryland
the ground kit won't do anything to help this issue. u might have a tune or alternator issue.
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