[Main C900 Bulletin Board | BBFAQ | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Hey Nick, been thru similar issues recently Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by nateh89spg [Email] (#563) [Profile/Gallery] (more from nateh89spg) on Fri, 16 Dec 2011 05:54:10 In Reply to: Cold idle hunting. '88t, is this really the AMM? I have, nicknick [Profile/Gallery] , Thu, 15 Dec 2011 18:11:26 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

My approach was a bit haphazard on my 88 SPG, although it seems to have calmed down a bit. IIRC, the biggest impact I had was installing a new 02 sensor. It seemed to me it was engine temp related, hence swapping out the NTC sensor first as it was much easier, but not effective. Moved to the 02 next. Went thru the bentley procedure to measure it, measurements came back poor to say the least.

I also replaced all of the turbo couplings, RTV'd the gromments, new dashpot (mine was toast anyway), couple of other new vaccumm lines. Hell, I went as far a a compression and leakdown test to make sure I didn't have a headgasket problem as a hunting idle could be one or a combination of a million things. Of course, I am also battling base boost and some other things, but the idle is much smoother. Still not idling like my old 89 spg (which was purrrrrr - fect somehow while the car fell apart around it), but more than drivable.

Take Care,
Nate

• Cold idle hunting. '88t, is this really the AMM? I have, nicknick , Thu, 15 Dec 2011 18:11:26
  • Re: Cold idle hunting. '88t, is this really the AMM? I have, CBS , Fri, 16 Dec 2011 13:52:17
  • nicknick , it doesn't seem like you read my long ......, johnd, Fri, 16 Dec 2011 12:39:44
    • to me it's more question about tools and knowledge, Siegfried, Sat, 17 Dec 2011 08:17:22
      • Zig , please correct me if I'm wrong , but doesn't ...., johnd, Sat, 17 Dec 2011 14:39:25
        • it depends on what you're trying to do, Siegfried, Sat, 17 Dec 2011 15:13:43
          • So does that mean that the movement of a gauge's......, johnd, Sat, 17 Dec 2011 16:14:21
            • No, it can not, Siegfried, Sun, 18 Dec 2011 03:06:58
    • Calibration test connector color code., Cmyles , Fri, 16 Dec 2011 14:05:23
    • I'm sorry, i actually meant to have someone else, nicknick , Fri, 16 Dec 2011 13:14:29
      • I'll try to get the wire color info and post back ....., johnd, Fri, 16 Dec 2011 14:01:25
  • Thanks all. Obviously, i don't have access to a known, nicknick , Fri, 16 Dec 2011 09:01:06
    • either to go replacing bits all way around, Siegfried, Fri, 16 Dec 2011 10:48:31
  • Hey Nick, been thru similar issues recently, nateh89spg , Fri, 16 Dec 2011 05:54:10 <-- Viewing This Message
  • How about, vvack0matic , Fri, 16 Dec 2011 03:19:18
    • I'll bet you mean MPG not MPH, Cmyles , Fri, 16 Dec 2011 08:21:17
      • Woophs ment mpt (miles pr tank) :), vvack0matic , Fri, 16 Dec 2011 16:50:54
        • nothing is impossible, Siegfried, Sat, 17 Dec 2011 07:34:49
  • Re: Cold idle hunting. '88t, is this really the AMM? I have, JET AIR 900, Thu, 15 Dec 2011 23:12:37
    • Re: Cold idle hunting. '88t, is this really the AMM? I have, Cmyles , Fri, 16 Dec 2011 08:26:22
  • OK, that was confusing! It always starts fine. Only, nicknick , Thu, 15 Dec 2011 18:12:47
    • Re: OK, that was confusing! It always starts fine. Only, vvack0matic , Thu, 15 Dec 2011 18:24:42
      • Only one car has a dashpot, and this happens even, nicknick , Thu, 15 Dec 2011 18:49:59
        • Re: Only one car has a dashpot, and this happens even, Saabnutt, Thu, 15 Dec 2011 19:43:52
          • o2 sensor, 85turbosled, Thu, 15 Dec 2011 22:37:14
          • Re: Only one car has a dashpot, and this happens even, Hans, Thu, 15 Dec 2011 21:32:17
          • What about the NTC sensor?, whitesaab, Thu, 15 Dec 2011 21:00:07
          • Re: Only one car has a dashpot, and this happens even, Cmyles , Thu, 15 Dec 2011 20:57:08
            • LH 2.2 cars have a test socket from which the AMM can.., johnd, Thu, 15 Dec 2011 22:30:15
              • Re: LH 2.2 cars have a test socket from which the AMM can.., 85turbosled, Thu, 15 Dec 2011 22:41:46

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