What did you do to your OBS GMT400 Tahoe/Yukon Today?

[SunlitComet]

Due to Illness (again) I am at a local shop awaiting the replacement of my msd dizzy with a new one because it had a screw loose.

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[SunlitComet]

Fix and running with the second msd dizzy for 125 in labor cost. The mech dropped it in within 1/2 degree. Yeah. Lots of pics to follow.

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[noJeepshere]

Got some potentially bad news for my engine: P1345. Crankshaft/camshaft timing off... cause is either sensors loose or mechanically off, as in timing chain loose or stretched. Great...

cent frum a smaert fone

 

[SunlitComet]

Just sync it again and wait to see what happens later. Dizzy hold down may have loosened.

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---------- Post added at 09:19 PM ---------- Previous post was at 08:14 PM ----------

Look here in the msd dizzy albums to see the first and second dizzy setup. Still some more pictures to load so check back later. http://s1222.photobucket.com/user/Sunlitcomet/library/Darth Vader

 

[SunlitComet]

Last of the dizzy pics up.

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[Gzes]

Loaded scrap heavy Lincoln on my dove tail

 

[xanatost]

Sun what happened to your first one?? I got a MSD disturber and MSD Ignition. Have you seen any improvements with the MSD Ignition running?

 

[SunlitComet]

It can put out so much spark that they will eat up a copper core plug from a .060 to past .075 in less then 9 months. I never have misfires even when the gap was really wide and my hydrocarbon reading in the exhaust went down as well. Impossible to measure it dyno wise but it does do good. Easy and quick starts. No accelerating response lagging either. Anything that good has got to be on a vortec 350. I have the ignition box, wires, and full complete dizzy. plugs are autolite xp605's

The dizzy's from msd did not come with thread lock on the screws of the rotor or cap. the rotor was installed and snug so I left it alone. At about 9000 miles in one of the screw of the rotor backed out completely and started loosing the other from rotation. Eventually the rotor angled up and hit the dizzy cap locking it up enough that it sheared the rotor mounting plate/sensor trigger right off the dizzy shaft. Stuck me on the freeway. check yours and thread lock the rotor screws lightly. Bought it dec. 2012 install march of last year so I am asking that it be warrantied and to address the issue. Still working on what appears to be a moisture/ventilation issue in the cap. Seriously looks like it is destroying itself. The msd has bigger vents the oem i think. Must be the msd box and coil power. Burned out the primary winding of the coil last November. It lasted 3 years about. Working on a plans to reduce under-hood temps and better heat isolation to help with that tho.

 

[xanatost]

Yea when I got my dis I had to mess with it and when I took it apart I saw that there was none on the screws and I added a little to them. I haven't had any problems with moisture issues in my cap. I remember when you posted a wile back about that and I been checking mine about a couple of months to make sure mine was ok.

Ill be putting mine on this weekend

 

[rolfsent]

Installed my new lenses today, except one because amazon thought I needed two driver headlights and nothing for the passenger. Had to replace one of the oem mounting brackets and use the junk tyc ones.