Heat shields
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Freshman User
Joined: Jun 2006
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Heat shields
I have a job 2 06. I recenly had studs, injectors(190cc), and a Spartan VGT 40 installed. I noticed that I do not have any heat shield on my y pipe or on the back of the oil pump housing(IPR sensor location). I don't remember a heat shield on my y pipe, and it does not look like there was or is provisions for it? Also, my truck runs great when cold, but after it warms up the idle seems to hang a little high while coasting to a stop and once stopped drops to normal, and sometimes it sounds like it misses when coasting, but when fully stopped and braked it smooths out perfectly. When it sounds like it is missing, I do not feel it run rough and the tach seems unaffected. Any help would be appreciated.
Senior User
Joined: Feb 2004
Posts: 341
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From: Statesvegas, NC
If the coasting idle sounds kinda' like the truck is running an agressive cam or "camming" (sp???), then I'd say it relates to the injectors and tuning. If that's the sound, I personally love it. Matt said it can be tuned out but I told him "no way" because I like it. As I understand it, the truck is trying to idle w/ more fuel than it knows what to do with. Its brain is trying to deal w/ a stock amount of fuel at idle but the 190's can bring more to the table so the result is intermittent firing at times.
Amp
Amp
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Freshman User
Joined: Jun 2006
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Thank you, that makes sense. Does that make the idle hang up high a little? If I rev it up in park, it hangs a little high till I hit the brake, then it goes to normal. Anybody with a job 2 06 feel like checking on heat shields for me? The y pipe is easy to see, the cover on the IPR would take a look see from under it to see if there is a tin shield on the back of the motor right above the top of tranny. I looked at an 06 at a dealer yesterday and it had a y pipe shield on it, but it had lugs on it that it attached to, mine does not. I do not know if it was a job 2, if it would matter. Help would be appreciated.
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
Yes, on most powerstrokes with larger injectors (my experience is with the 7.3's but all the same), when you are driving with the TC unlocked and let off to idle, the engine will skip and sputter coming back down to idle. I can't wait for the time comes when i get big B codes.
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