200 sunfire - engine stalls out

[br87]

Hello,

I am seeking some advise and help on issues regarding my 2000 sunfire SE 2.2 L engine. Firstly, I should mention the present temperature out here is -37 C.

So here is the issue I am experiencing. The car does not idle smoothly. In fact I find it idles a lot lower then my fiances 2005 sunfire (hers idles at about 1000 RPM). My car idles around 750 RPM. and I've noticed for last couple months when just idling its not very smooth. The RPM will idle at 750 and then drop down a bit and back up again. It never has been a big problem till now.

While driving it yesterday, whenever I would let go of the accelerator the RPM would drop right down to 500RPM, and you would hear as the heater (air blowing) would completely drop down, and lights would dim significantly, and then within a spilt second, RPM would jump back up to 750 and blower and lights would return to normal. It almost feels as if the RPM is too low for Alternator?? That it's not able to produce enough power for electrical devices. As well, while braking if the ABS kicks in again I see this drop in RPM along with lights dim and blower airflow drop. Once again only for a spilt second though.

Here is the big problem. the drop in RPM and amount of disruption it causes actually had my car stall when I let go of gas and hit brake and had ABS kick in.

Im not sure if this is a problem with having the idle set too low, spark plug problem or something do with alternator?

Would someone be able to help me please?? Thank you

[twistable_deer]

well im not sure if this will help but i did have a similar problem. My car like to stall out a lot and my problem was my EVAP. There is a plastic tube that connects to your evap pump then it connects to your intake manifold, so what i did was just unplugged it and my RPM's went to a healthy 950 RPM. It could be something to look in to. hope this helps.