KA stalling.

[SnakeKack]

1991 KA24DE

Ok I have the symptoms of when I come to a stop and I apply brakes the car's idle dips real low and the engine shakes as if it were to stall soon.

I have not cleaned the iacv yet. I will probably do that in the morning. I didn't make a whole thread just for that though. Because the whole going to stall thing also happens when I press the window button.

Like say for an example the window is already rolled up, and if I press down on the button to make it go up my idle dies down in an identical manner like the dirty iacv symptoms. It also does it after the car is warm and I am just sitting there and press on the brakes. It's like my electrical system is taking a huge load when those things happen.

I'm wondering if it is some sort of grounding/electrical issue or maybe my alternator? When the engine is cold it doesn't do it and I am assuming it's because it's idling higher to warm up. Buuut if it was an electrical issue shouldn't it still attempt to drop idle even if the idle is higher?


Has anyone had this happen before?

[sillyvia13]

I dunno...
do this...
take the weekend and do some maintence on your car...
It could be a few things... intake manifold leak seems to be the light glowin in my head now from your post... but stalls when you hit winda DANG! lol...
try to clean grounds. on battery and on chassis...
we often forget to do regular maintence to our cars...then they tend to slowly fade away... spray some brake cleaner on intake mani gasket area... see if it changes idle speed...if so...its a gasket.


gl if you need more help pm me... I will try!?

[LA_phantom_240]

I thought small vacuum leaks made it idle high or something?

[boske]

I have this exact same problem, I haven't tried to fix it yet so I can't help but I'll be watching this thread. I mostly notice it when I open up my door and the power seatbelts want to stall the motor, more than they should. I did pick up another alternater but haven't tried it yet..

[SnakeKack]

Damn mine isn't that bad when the seatbelts move...Well hey if you do that alternator any time soon let me know what the results are.

[LA_phantom_240]

I swapped a 91 KA into my s14 a couple weeks ago, and before it comes up to operating temp, when I decelerate it hits about 400-500 RPM. With my Nismo mounts, the low idle shakes the hell out of the car lol. It also bogs a little when my windows hit the top of their travel, and the voltage drops a bit. It has an underdrive pulley and an alternator that is on its way out, so my voltage isn't very strong. This is according to the voltmeter on my radio, which is within .2v every time I double check its accuracy.

I'm thinking you may be having the same thing happen.