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Idle and stumbles

Tiny
BATTT191
  • MEMBER
  • 1995 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
Won't idle and stumbles alot. Seems choked up when I start it every time but smooths out. No problem starting. Had code 35 so I replaced IAC valve but no change. No chek eng. Light on
Tuesday, June 14th, 2011 AT 7:37 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
How long since a tune-up? Take the throttle-body off and clean it. Use a gage and check fuel pressure. Are both injectors throwing out a similar spray pattern?

I haven't looked at the code. Any code just says that the computer thinks there is a problem on that system. Doesn't tell you what to replace.
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Tuesday, June 14th, 2011 AT 8:24 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
To add on-DTC35 idle speed error-try cleaning out the EGR and PCV valves and test the TPS and MAP sensors
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Tuesday, June 14th, 2011 AT 9:23 PM

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