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Idle then stall

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cookmeup272

15+ Year Contributor
1,639
11
Jan 14, 2009
Utica, New York
So I am going to get my car inspected and aligned tomorrow. We replaced pretty much all of the coolant hoses and some other minor things. Started it up to make sure everything is good but now i have one more problem. When i start it up, say after i let it run for say 5 mins it will start to try and stall. The idle will drop to about 500 and then begin to die. Anyone have any ideas? Im thinking a BLT and maybe change the plugs but anyone have any other ideas? Also, i have 4 brand new BRP7ES'. Would they work with my car and the mods?
 
Do you know how to do a boost leak test? If not then learn. Also your biss screw might need messed with a little bit.
 
Did you disconnect the battery at any point while working on it? ECU may have reset and has to relearn the idle.
 
Yes i do know how to do a BLT, im gonna do one today after school. I did not disconnect the battery but it did get pretty dead. Like the gauge lights and even the beeping didnt even turn on.
 
Readjust the BISS screw. If you messed with coolant lines on the throttle body or vacuum lines you probably fixed a vacuum leak and lowered the idle without realizing it. Back the screw out slowly and the idle should raise. You want it around 750-800rpm @ curb idle w no accessories.


Kolby
 
Check your BISS screw like said above. Also make sure you did no pull off or snap any vacuum lines.
 
well i toke my car to the mitsbishi dealer and got my dianostagic ran on it because i was having the same problem it is the throttle body letting to much gas into the engin and not enough air thats what they told me
 
Ok i will back out the BISS screw some more. And are u saying i should just adjust it when the car is running? Last time i did it i read the steps and i ended up grounding the two things i needed to ground. Is this really necessary?
 
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