90 GMC 350 TBI idle question

Posted by Rick from Paso on January 07, 2004 at 18:45:09 from (63.202.152.239):

I have a 90 Sub with 333000 miles it runs pretty good, starting to lose a little power. I am planning to put a new crate motor in it but have been fighting a rough idle problem for a while. It doesn't die, just rough idle and recently started chuggling under cruise conditions with slight accelleration. I replaced EGR, EGR solenoid, TPS, PVC, Air filter., found and fixed a vacuum leak and the problem has mostly gone away, but seems to be starting again with an occaisional rough idle and chuggle. I also had a slight problem with it running a little hot, replaced radiator, put a lower temp thermostat (175). It's driving me nutz! Any help would be appreciated.

Follow Ups:

• Re: 90 GMC 350 TBI idle question Bob 09:02:11 01/08/04 (3)
  • Re: Re: 90 GMC 350 TBI idle question Rick from Paso 18:58:34 01/08/04 (2)
    • Re: Re: Re: 90 GMC 350 TBI idle question Bob 22:01:03 01/08/04 (1)
      • Re: Re: Re: Re: 90 GMC 350 TBI idle question David 08:48:54 12/19/04 (0)
• Re: 90 GMC 350 TBI idle question G. L. Grumpy 23:03:16 01/07/04 (3)
  • Re: Re: 90 GMC 350 TBI idle question Rick from Paso 19:00:19 01/08/04 (2)
    • Re: Re: Re: 90 GMC 350 TBI idle question John McPherson 19:26:50 01/08/04 (1)
      • Re: Re: Re: Re: 90 GMC 350 TBI idle question Rick from Paso 20:52:12 01/08/04 (0)

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