My engine started doing something funny to me today. When it's cold, it won't stay running. No way, no how. I have to keep my foot on the gas to keep it at RPM's where it won't die on me. I've been thinking about it, and it can't be my fuel pump, as it runs when it has more gas given to it, and it's not my injectors for the same reason. One of the times it did this, it sounded like it had a bad miss, which mysteriously went away, so that has me thinking wires and plugs, but part of me also thinks IACV. Anyone else have any ideas?

I tried unplugging the IACV to reset it, but I couldn't keep the engine running to get at the screw, which makes me think not IACV. And as soon as it hit 200-220 degrees, BOOM. Car runs perfect. No flutters, no dying, no missing. Just perfect.

Come to think of it, this morning it repeated one of it's usual problems. I start it in the morning, and it starts, then goes to REALLY low RPM, and sometimes dies, but afterward starts just fine. Would the cap/rotor/wires/plugs replacement fix this, or is this a computer issue? Any help is greatly appreciated.

 

how coold are we talking about here in Arizona? but it definitly sounds like IAC is gummed up take it out of the throttle body and clean it with a soft brush then use some carb cleaner and a tooth brush to get the inside of the venturi dont get any carb cleaner on the Iac thought start it up it might want to stall right away but it is ok start it again and it should be fine make sure you clean the spring on the pintle good...

 

I'm talking about when the engine is under 200 degrees. It hits 200, and works fine.

 

well did you do it?

 

Just went out and bought the carb clean, the electrical contact cleaner, and the electra-motive cleaner, waiting for the manifold to cool down (I need to do that damn bypass) before I get in there with my hands.

 

my car was doing some crazy idle junk.. i jsut took it in and they fixed ti on the comp... im not saying to do this right away.. but i replaced my IAC and a few other things before i just gave up... try that.. for 50 bucks its worth a look... plus you can get other codes off your comp that might not set off the light.. like mine had a derty TB cose and derty intake code.. fixed those now it runs great.. 2 months ago when it was summer

 

I have come to the decision that my intake needs cleaning. Badly. It's scary dirty in there. Carb clean was coming back BLACK.

I couldn't figure out how the hell I was supposed to get the IACV out without removing my TB, so I let it be where it is, and sprayed some of the carb clean in the little hole. It got warm while I was cleaning the carb clean out, and started running fine again, so I'll have to wait till the morning.

It sounds like one of my belts is slipping really bad only while this is occuring. When it sounds like it's missing, or being fuel starved, the squeal is gone, but when it seems it's the IACV, one of my belts squeals up a storm.

 

what little hole did you spray carb cleaner into?!?! but the IAC can be removed without removing the TB and adjustible wrench or channel-locks if your careful will do the trick but it definitly will come off with The tb on

 

The IACV hole. *braces for impact* And I couldn't get a wrench on it at all. Either the alt bracket or the manifold was in the way the entire time. I could get access to two flats, and they were on opposite sides. Oh well. If that doesn't work, I'll go buy the gasket kit and take off the TB and clean all of that crap.

 

its probably not a good idea to be sparying to much carb cleaner in there if it is stuck open cause now it is sitting in there with the IAC which could destroy it

 

Must be that time of year again. Every year get same posts about cold running stall out that magicly disappears. It's simple carb iceing. Or in your case Throttle body iceing.
When the air is about 40 to 50F outside your throttle blades get a build up of ice from the water in the morning air freezing and temerarly blocking off air flow. As long as you keep jazzing the throttle the ice can't build up on the closed throttles. Once the motor is warmed up the problem goes away. Adding methol hydrate (gas line antifreeze) to your fuel tank helps. In colder climates this is added to the "winter gas" formula to avoid carb iceing and improve cold wether driveability. Until the "winter gas" hits the pumps there is always a run of drivers that experience this icing/stalling in the late fall.

 

But it happened when it was like 85 to ninety outside the other day at about 2 PM. The morning one I'll agree with you on. That's highly possible. What about the belt slippage that only seems to happen with this problem?

 

take yo9ur flippin car to the shop.. its a comp issue.. im pretty sure of it.. i did what you are doing right now and i waised 200 bucks on parts that did not need thanging. take your plenum and tb off, cleen them in hot soapy water... dry very well and put back on car.. cleen them.. they you get better throttle responce... but its not how your car is derty that is making the issue... if it was the your tb would be stuck closed or open etc..... it could be your iac.. but tehre 100 bucks here in canada anyway.... jsut take it off.. if its derty cleen it or replace it.