91 BURB. ROUGH IDLE, STALLING, AND A SMELL OF GAS

  • Tiny
  • Bubba1991
  • 1991 Chevrolet Suburban

1991 Chevy 1500 Suburban, ~134k miles 5.7l v8.

He's (my burb) been sitting on my curb for about a month and a half, hasnt been run at all because the rear differential is on its way out. Last week I go to start it up and find I have a problem.

Terribly rough idle, probably about 150-200rpm? (I dont have a tach, so I cant tell) The whole body shakes and I can see the cabin lights dimming).

I give it a little bit of gas, and it seems to stop shaking (maybe 800rpm). If I give it too much gas (equiv to revving a 1100rpm), the engine stutters a bit, then stalls.

I tried to let it just idle a bit thinking that it would fix itself, but after 3-4 minutes nothing had changed. Smells like un-burnt fuel too (emissions)

My friend told me to short a box under my steering wheel to get a DIAG code, but it continued to blink " Hello".

Any help is appreciated. Thanks
-John

Saturday, August 25th, 2007 AT 2:21 AM

1 Answer

  • Tiny
  • rasmataz
  • Member

Take out the IACV and clean it. Problably needs computer learning

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Saturday, August 25th, 2007 AT 5:15 AM

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