Rep Power: 248

That's the best way I can describe it. Occasionally when it's at idle, it'll drop down to 0, then bounce back up to 1200 or so. It'll then settle at 900. All of this happens in under a second, and when it happens, all the electrical systems in the car loose power for a fraction of a second, like the radio goes quiet and all the lights turn off. But it's not long enough for the radio to forget what time it is, and my GPS doesn't even notice.

Thoughts? My gf's dad thought it could be the IAC or EGR valves. I kind of need to get this fixed soon, I've got a road trip this weekend.

 
Rep Power: 388

Hows your battery terminals- and grounds?
Do an idle relearn

 
Rep Power: 290

Pull the throttle body of and clean everything. I am pretty sure the IAC is the culprit. Should fix the idling issue. Like triz said do the idle relearn after you clean.

 
Rep Power: 0

my car does this too. i thought it was perfectly normal. Only i dont lose electrical power and when it happens its when im decelerating or at idel and it drops to 900 then rebounds to about 1200.

 
Rep Power: 248

I just took off the filter housing, and it's clean in there. Everything's silver and gold. I mean, I just cleaned it about a year ago, maybe more. But still, not long. I'm going to do an idle relearn, and drive it around today. If that doesn't fix it, any other ideas what it could be?

 
Rep Power: 287

When your car does this, it's probably because the magnetic field of a nearby UFO is causing it to do this.....just kiddin yo, not too sure. maybe pulling the positive wire off the battery terminal and letting the ecu reset or something? Good luck. where are you going on your trip?

 
Rep Power: 248

Down to Goliad County. Out to a ranch.

But then yesterday, the AC died on me. Turned out it was the blower motor transistor. I'll make a thread on it later, it's actually a pretty good story and good info.

 
Rep Power: 251

^^^please do...

 
Rep Power: 0

My 95 eg is doing the same thing. It'll bounce from 900rpm to like 100rpm, then jump itself back up to 1k. It only does this during warm up. I know i've definately got a air leak somewhere but where idk? Im also thinking maybe iat or iac sensor? idk though?

 
Rep Power: 811

check all the vacuum lines, spray some soap water and watch for bubbles.

 
Rep Power: 0

i know one of the leaks is the hose that goes from the pcv to the tb. but im thinking theres got to be something else causing it as well.