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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old September 13th, 2005, 19:00   #31
TornadoRed
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Default Re: Hard to start when hot

This needs pictures.

Login to http://pics.tdiclub.com/ and upload your photos there.
Then link to those photos [image]link[/image]

If possible, do not post mega-sized photos.
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Old September 13th, 2005, 19:28   #32
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Default Re: Hard to start when hot

Thanks, TornadoRed. These may be in the wrong order!
[image]http://pics.tdiclub.com/showphoto.php?photo=20914&password=&sort=1 &cat=500&page=1[/image]
[image]http://pics.tdiclub.com/showphoto.php?photo=20916&password=&sort=1 &cat=500&page=1[/image]
[image]http://pics.tdiclub.com/showphoto.php?photo=20915&password=&sort=1 &cat=500&page=1[/image] [image]http://pics.tdiclub.com/showphoto.php?photo=20914&password=&sort=1 &cat=500&page=1[/image]
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Old September 13th, 2005, 19:28   #33
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What Now?
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Old September 13th, 2005, 19:41   #34
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Old September 13th, 2005, 19:58   #35
Hamman
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Jerry,

Thanks for your help!

Dave
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Old September 14th, 2005, 21:34   #36
mjbach
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Thanks (Dave and Jerry) for posting such nice photos and very complete instructions. My husband has already started on the project and I will post with results.
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Old September 17th, 2005, 02:36   #37
wpeets
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Thanks for the help & pictures. I picked up 10,000 ohms resistors at Radio Shack they came in a packet of five for 99 cents. I installed one as shown and no more CEL I have been looking at that light for a couple of years and really got use to it. Now I feel like something is missing. Engine fires up immediatly and always has since the switch was installed. Saves a lot of wear and tear on the starter.
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Old September 18th, 2005, 18:26   #38
mjbach
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Mod is done and so far everything is great. Thanks again.
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Old October 1st, 2005, 20:15   #39
kingeeyore
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Default Re: Hard to start when hot

Hi all...thanks a lot for this work-around. I totally agree with the fix, its just not worth it to keep fiddling with this darn hot start problem.

Just one question....is anyone positive it is the #3 connector? The only reason I question this is because of the photos above look like the sitch/resistor is going to the #2 connector. And, Hamman's description (upper right side of connector from drives perspective) would correspond to connector #2.

I could be totally missing something here so some re-assurance would be nice.

Thanks.
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Old August 23rd, 2007, 07:36   #40
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bumping
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Old September 18th, 2007, 16:25   #41
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I am seriously going to have to consider this mod. My starting issues are driving me crazy.
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Old October 15th, 2007, 09:53   #42
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I'm also having this problem, but the cause seems to be diffrent.

The tests revealed only .5 volts going to my glow plugs, instead of the required 12v. They traced it back, for whatever reason, there is 12 v going into the computer, but coming out to the relay, which in turn sends voltage to the glow plug, only .5 v comes out of the computer.

So, going to see a diesel guru tonight, in hopes he can figure out the problem.
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Old October 15th, 2007, 12:23   #43
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I doubt the glowplugs have anything to do with it, the car would be well above 40degree', the glowplugs wouldn't even cycle.
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Old October 15th, 2007, 16:58   #44
ducatipaso
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I replaced my glow harness, my plugs and even adapted so they run longer. Starts *somewhat* easier, but not always.

It's also kinda random. Sometimes it's fine sometimes it not.
I'm starting to think some form of IP seal or siphon activity happening.
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Old October 16th, 2007, 06:39   #45
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Ducati: I hope you know this, but the 99.5 cars are plagued with hotstart problems because of the code within the ECU. There is nothing that is going to fix it. A fresh battery and good starter will help, but you'll never get rid of the problem....

The only way I have found to get rid of this, was with a Rocketchip upgrade. Jeff starts out with the Euro code, which doesn't contain this problem. Something to do with 8bit start code, compared to 16bit in the Euro (I dunno, Jeff could explain better )
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