Subject	Possible PTU issue..random cylinder dropping
Posted by	Mike87T on May 24, 2008 at 4:35 PM
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Message	So I did headgaskets recently on my 91TT and when I went to start it half the cylinders were out..So I got some dielectric grease and greased up every PTU, CAS, and injector connection. Started the car, everything is great for 2 months on all cylinders. Last night I go to take my first 2 hour drive to the beach since the rebuild and cylinder 4 out of nowhere drops out 15 minutes into the drive. Pull over, and re-dielectric grease all the same connections (keep the grease in my glove compartment) and it still kept missing on #4. So I drive home to switch cars and a mile from my house it ran terrific suddenly on all 6 cylinders again without an issue, so all seems fine. I still took a different car though. This probably will happen again I'm assuming, what do you think I should try? Try another PTU? CAS? I don't think it is an injector since it happens on random cylinders, but if it is an injector, do dying injectors randomly work/not work? Thanks for any input..
Follow Ups	Possible PTU issue..random cylinder dropping - Mike87T 16:35:02 05/24/08 Yes - dying injectors can fail and then work, - jzack 17:54:36 05/24/08 I just went through the issue of an injector failing and - onewheelf4 10:06:17 05/25/08 Re: I just went through the issue of an injector failing and - Mike87T 17:23:50 05/25/08 I'd check and verify the wiring before replacing the - jzack 23:31:05 05/25/08 You know that little sub harness on the PTU? - spyhunterTT 06:55:47 05/26/08
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