My baby's CHOKING!!

[oweezy9]

2000 GMC Sonoma, 2.2 Liter 5spd std, 80,000 miles, cool air intake and exhaust only engine modifications.

Well, today after an hour and a half of highway driving, I get back into town and while i'm at a stop light, i tap the gas as I shift into second to make a left turn--and it studders at first. I trick it into revving past it, then a rev or two later, it plunges and chokes off.

It took about 15 seconds of trying to start it and it dying out, then me trying and starting it to get it running in the middle of a light. Well I made it home(only about a half mile away, and through about three stop signs).

I pop the hood, and the Volant cool air intake is popped out, but only about a third of the circumference is out of the rubber "pipe thing" that clamps onto the actual ...."carbeurator" I think that's what it is, although it was my understanding that 2000's aren't carbeurated. It's the thing where the throttle is and the air filter/line hooks into the side of it.

Now while I was driving, my first thoughts were that the clutch was slipping until I realized that the 'dump' of power was the engine 'choking out'.

Other thoughts that crossed my mind were the fuel pump?...the sensors being off from the air filter hanging off?

ANY ideas would be much appreciated.

When I listen underneath the bed in front of the rear driver side tire(next to the fuel tank). I can hear the fuel pump going. Now i'm not sure if it is supposed to sound the way it is because until this point I've never paid attention to it. It makes kind of a whine noise, that goes in, then back out(like its working hard for a second, then idling) but to be honest, it is a VERY uniform sound and doesn't sound out of the ordinary.


Thanks in advance for your help, I'm gonna go try and make it to work and back, and hopefully one of you may have some ideas.

Oliver

[big dave]

Possibly fuel filter, or your Mass airflow sensor was sending crazy readings to your computer because the intake popped off.

[s10mafia50]

i didn't even know the 4cyl in 2000 had a maf, as far as I could tell it only had an air temp reader. But it sounds alot like the engine was getting too much air. I had a similar thing happen at the drag strip with my mom's MAF mustang when someone told me to take the air filter off and run open MAF. It seemed to be choking out and dropped over two seconds off my et. I would say that either you have bad plug wires(common problem) or it was just being choked out by too much air. Hope this helps....
Andrew

[oweezy9]

Thanks, I reattached it snugly before I ran off to work, and I didn't have any problems there and back after letting it run for a little while on its own in the driveway.

Hopefully this fixed it, but if anyone else has anything to add, I'd certainly appreciate it.

[i0kepa]

you don't have a MAF its an IAT (Intake Air Tempeture) sensor. If that is unplugged then yeah the truck will run like A$$. I didn't plug mine in one time and it just farted, chugged and spit at me while it tried to take off.