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Thread: rough idle

  1. #1
    Ricer Killer
    Join Date
    Nov 2001
    Location
    Miami, Florida (kendall)
    Posts
    287

    rough idle

    as of right now, i have a 95' GMC Jimmy with a 4.3 l v6 CPI. It runs great right now but it idles somewhat rough in the morning and also when you leave the car sitting for a while. I was just wondering what may be the problem to the rough idle. Keep in mind that it only idles rough for less then 10 minutes when it does idle rough. I just want to keep the motor running perfect so when I go to sell the motor in a few months to get the v8, it will be running perfectly.:confused:

  2. #2
    Registered User
    Join Date
    Nov 2001
    Location
    420ville BC
    Posts
    273
    it could be your valves need adjusting not enough oil when starting causes rough idle or your choke could be sticking.
    Last edited by hazards-s10-350; 12-01-2001 at 02:48 AM.
    '82 slammed orange S10 with a 350 bored .030 , flat top pistons , camshaft with 214 in 224 exh @.050 and .454 lift ,holley street dominator intake ,holley 4 bbl 650 cfm carb...$4000obo

    1996 k1500 350 tbi 4wd singlecab shortbox 3" lift 31"goodyear mt's $6000obo

    1997 zr580 efi 2"x136"track stock mint condition w/reverse $3000obo

  3. #3
    Heavy footed blazin355's Avatar
    Join Date
    Nov 2001
    Location
    Toronto, Ontario
    Posts
    20
    I would look into the choke more then the valves. The valves will not take 10 min. to have oil lubricate them. If you have a buddy that works in a shop that has a scan tool, that I feel would be a good place to start. If the scan tool comes up with a code it may give you a better idea on where to start looking.

  4. #4
    V8 TPI 5 Speed Xtreme88Jimmy's Avatar
    Join Date
    Nov 2001
    Location
    Oaks, PA
    Posts
    58
    could also be carbon build up in the EGR Valve...
    *1988 GMC S-15 Jimmy Tuned Port Injection 350 V8 5-Speed

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