And that would make sense too, why he'd have low vacuum at idle. EGR may need taken out and cleaned up so it can open and close properly. Might even have to clean the intake EGR port up some. Sounds like that low flow might mean a blockage of sorts or heavy carbon build up. Run the bitch lean for a bit and run some ethanol. That might help clean some of that up and allow it to burn off.
I would rather he chuck a pice of bicycle cable into a drill, and use it as a roto rooter....gotta double it over, btw.
It seems to me like he has good flow, because it runs like **** when its hooked up.
Also, Low vacuum would make it run rich, but he mentioned that it backfired through the TB yesterday.
Look guys, in a nut shell, the heads are brand spanking new, all the gaskets are brand new, the EGR is brand new. I don't see how there can be any leaks or clogs. The intake manifold is from a donor truck, I cleaned and checked everything properly regarding the EGR passaages. When I hook that EGR to ported vacuum it almost shuts the engine on accel off idle. That soleniod is not doing it's job. I am getting a 32 EGR system code, well, at least that, the codes die out after the 3rd to 4th rounds of flash. I get a 4V reading off the pin B. That is confusing to me, since it is powring a 12V engine light bulb. Which is another clue, there is not full voltage at pin B, why? Is that normal? These are the questions that need answered, clues. Does the ECM have a bad or low supply of voltage? You wouldn;t think so if you are reading 12V at pin F, and as soon is that is grounded blasting a 10 amp fuse apart.
TCC does not lock up, have power for it at pin F, when grounded to activate the TCC it shorts the fuse. I have no idea why the hell the TCC is tied into the dash guages fuse, wtf is that all about? I do get a 12V reading from pin F, it does disapppear when the brake is applied, as it is supposed to. IMO, if that pin F is grounded, and blows the fuse, that is only because of one thing, something in that line that is supposed to create resistance when activated, is not doing that. There is not a short though, becaus that itself would be either popping a fuse, or burning the ECM up, wouldn't it? Thoughts? If you take a fused, hot wire and touch it to a direct ground, the fuse will blow. If you touch it to say, a light bulb, or a fan motor, etc, that device it is connected to creates enough resistance that it does not blow the fuse.
I got to go look for a diagram how thw TCC soleniod is wired to...
On a side note, I do notice a difference in performance with the new fuel filter. I did not take a pressure reading before replacing it to document any change, if anything, I would say the fuel flow increased, not the pressure. I just ran to the beer dist and back, big long hill coming back home, romped on it and she did a lot better than normal, when I got to the top she kicked into OD, she definately has a little extra oomph. Water temp did jump to 210 in the process though. Don't know if that is normal or not....
