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Check that your oil dip stick is all the way in and seals properly.
Posted by: wego0001 (68106) on 2017-10-10 18:03:26 In Reply to: Rough idle on cold start and when at temp. 4K cutout went away but... posted by jclayne on 2017-10-10 11:57:25	Share \| Report

These engines do like any kind of wrong air getting into the system. Did you install new crimp clamps on your vacuum lines. Did you also changed the the line to the ECU? This is a mayor to do but if that one is broken, nothing work fine anymore.

Also, check you vacuum line inside to the diff lock switch including the check valve.
Ciao

Werner

Thread:

Rough idle on cold start and when at temp. 4K cutout went away but... - jclayne 2017-10-10 11:57:25 (207 views)
- Backfiring.. - TyloPuP.. katMAN 2017-10-11 09:54:00 (153 views)
  - Thanks Frank. I've got new filters, pump, and accumulator. I'll check voltage. - jclayne 2017-10-12 22:00:31 (117 views)
- Check that your oil dip stick is all the way in and seals properly. - wego0001 2017-10-10 18:03:26 (171 views)
  - Thanks Werner. I did not check the dip stick. Good to know that too! - jclayne 2017-10-10 19:26:00 (147 views)
- All excellent advice below. Sounds like you are making progress, which is a good thing! - msvphoto 2017-10-10 17:51:32 (158 views)
  - I do recall on my 81S Scirocco that I had to adjust my base mixture in order to pass smog using the - jclayne 2017-10-10 19:37:46 (170 views)
    - Yes, 3mm allen (T wrench normally but any long 3mm allen will work). - msvphoto 2017-10-11 12:39:15 (167 views)
      - Thanks for info. Luckily I know a smog shop too.   -  jclayne  2017-10-12 22:02:37 (130 views)
        
        Shaft bushing on shifter is shot. Say that 5x! Just ordered a new one from 034.  -  jclayne  2017-10-17 00:36:20 (155 views)
        
        Depending on what dogbone you have Audi Tradition has new bushings for those as well....   -  ralleyquattro  2017-10-17 08:12:32 (119 views)
- Wants to collapse or actually collapses? My old ones collapsed on vacuum and strangled the engine. - 4x5x5 2017-10-10 15:12:46 (159 views)
  - If I manually give it throttle, I can see the hose starting to collapse. - jclayne 2017-10-10 19:42:58 (158 views)
    - you need new hoses. You can insert some springs to give it rigidity, but nice new options avail - 4x5x5 2017-10-11 11:23:48 (136 views)
      - Just purchased an 034 silicone set. Of course on backorder. Thanks for your help! - jclayne 2017-10-11 16:57:26 (134 views)
- Do you have an O2 meter and FV meter?.... - ralleyquattro 2017-10-10 13:44:25 (174 views)
  - Sadly, I don't. I'll look into buying both though. Thanks Martin. - jclayne 2017-10-10 19:44:11 (145 views)
- Sounds like it still has a vac leak. Did you check with chemtool? - Pre95 2017-10-10 12:22:37 (187 views)
  - Hmm... the 5mm to 3mm rubber hose coming off the warm valve is toast. Part# 035133647 or 48. - jclayne 2017-10-17 02:26:06 (128 views)
  - I haven't checked with Chemtool. Will totally do that. Thanks for the tip! - jclayne 2017-10-10 19:45:52 (126 views)
  - And check that your idle switch is actually functional... - Withthese2hands 2017-10-10 14:17:16 (195 views)
    - Excellent. Will add that to the list! - jclayne 2017-10-10 19:49:06 (167 views)
      - The idle switch is on the side of your throttle body, triggered when the TB is fully closed  -  Pre95  2017-10-11 10:06:43 (148 views)
        
        I do know where the switches are at. Just have to follow where the wires go. But...  -  jclayne  2017-10-11 17:00:43 (131 views)
        
        Those are pretty standard solid state components...  -  Withthese2hands  2017-10-11 22:15:32 (157 views)
        
        Frys? Radio Shack?   -  Driggs  2017-10-12 10:26:36 (146 views)
        
        Yes, those throttle switches look like "MicroSwitch" limit switches..   -  TyloPuP.. katMAN  2017-10-12 12:43:46 (149 views)
        
        Or, you can "mod" and MC throttle body and use a nicely sealed MC switch and plug.....  -  ralleyquattro  2017-10-12 14:34:02 (134 views)
        
        I have had pretty good luck bringing microswitches back from the dead with Caig DeOxit or ProGold...  -  msvphoto  2017-10-13 12:08:15 (151 views)
        
        Its called driving them regularly.. those cars run a lot better than the garage queens.   -  ralleyquattro  2017-10-17 08:14:57 (114 views)
        
        Excellent advice, helping my 4kq a whole lot (it is my daily now). The UrQ? Guilty as charged...  -  msvphoto  2017-10-17 12:51:46 (108 views)
        
        I'm trying to. No sense in paying for a Hagerty policy if it sits in the garage imo.   -  jclayne  2017-10-17 10:15:27 (109 views)
        
        Makes sense if Hagerty pays if the garage falls in on the Car!   -  4x5x5  2017-10-18 11:07:32 (101 views)
        
        Earthquake coverage is included which is nice here in CA.   -  msvphoto  2017-10-17 12:50:17 (95 views)
        
        Nice!   -  ralleyquattro  2017-10-18 08:36:25 (101 views)

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