Recent content by AfricanSnowOwl

  1. AfricanSnowOwl

    Differences between SOHC 4.6s

    I’ll agree that 2v heads don’t flow good at all, but it’s still a very capable engine. A few mustangs ago, I had a stock engine 04 GT’ with a big single turbo that made 500rwhp all day long. I hurt a lot coyote owner feelings with that car... I’ve been taking a lot of pictures and will...
  2. AfricanSnowOwl

    Differences between SOHC 4.6s

    A 4.6 simply just to be different. I know the 2v is not the best engine choice, but it’ll make more power than the worn out 302 that was in it. The 302 had valvetrain issues and the T-5 had bad synchronizers. I’ve owned a few new edge GT’s before, so I’m quite familiar with the 2v. At least the...
  3. AfricanSnowOwl

    Differences between SOHC 4.6s

    I'm in the middle of converting my fox body to a 4.6, and at the point where I need to find an engine for it. A PI 4.6 out of a mustang is impossible to find around here, but there are plenty of F-150, Crown Vic, town car, and explorer 4.6's. The DOHC 4.6s are all also either way overpriced or...
  4. AfricanSnowOwl

    Extremely rich and rough idle

    Messed with the car again this morning. I noticed the idle was wildly uncontrollable. It wasn't the typical surge, it was just all over the place. The car then developed a rattle type noise that appeared to be coming from somewhere in the center of the engine. Shortly after that, tapping noises...
  5. AfricanSnowOwl

    Extremely rich and rough idle

    Got it all back together today and fired it up. Let it warm up and checked for leaks, then set timing. No leaks! but it is still the same rough and rich idle. The vacuum gauge was low, 14", with a rapid vibration that steadies out at higher rpm. According to a bunch of different sites, that...
  6. AfricanSnowOwl

    Extremely rich and rough idle

    I got the lower installed today. Used "the right stuff" gasket maker for the front and back(skipped the rubber gaskets), and also put a ring around the coolant ports. Followed the torque sequence, and now I'm just giving it 24hrs to dry before I try starting it up. I did notice that the rubber...
  7. AfricanSnowOwl

    Extremely rich and rough idle

    I got the lower intake off today, no real surprises there. The gaskets were definitely blown on the rear coolant passages. The intake port areas of the gaskets seemed to be fine, but hard to tell. It was the original 34 year old ford gaskets. If there had been a vacuum leak, would it be...
  8. AfricanSnowOwl

    Extremely rich and rough idle

    Put the new MAP sensor in, no difference whatsoever. I don't think it's going to be the plug gap either, but I'll still try bring it down maybe to like .048-050. I would think spark blowout would get worse with higher rpm or engine load, but mine seems to be better in those situations. I would...
  9. AfricanSnowOwl

    Extremely rich and rough idle

    Yeah, that was going to be my next question. I had a slight suspicion the TB could be to blame. The only reason I put the 70mm TB on in the first place was because the spring was rusted and sticky on the stock one. I ended up throwing the stock one away, but lowering the gap is worth a shot...
  10. AfricanSnowOwl

    Extremely rich and rough idle

    Hmmm... after reading that I think it might be worth pulling the lower intake to replace the gaskets. I didn’t do a smoke test, but I did spray everywhere with carb cleaner, and when that didn’t produce any results I tried spraying propane. Also no results. I’m thinking I’ll try the lower...
  11. AfricanSnowOwl

    Extremely rich and rough idle

    The ECU was a DA1, but a faulty DVOM led me to believe it was outputting incorrect vref voltage, so I replaced it with a refurbished one from Autozone. I double checked the part numbers from the company that refurbishes, and it checks as a speed density 87-88 5.0 mustang. There was absolutely no...
  12. AfricanSnowOwl

    Extremely rich and rough idle

    Poteet isn't far at all. Thank you for posting the links to those diagrams! I think I had seen a few of those diagrams before when I first started trying to figure this out. I ran through most of the sensor tests, and found that the MAP sensor is not at all close to passing the sensor test. With...
  13. AfricanSnowOwl

    Extremely rich and rough idle

    I had some free time today, so I double checked a few different things. The computer was already pulled out and battery disconnected, so I decided to test wire continuity for pretty much every sensor. MAP, TPS, IAC, ECT, ACT, O2s, and the injectors I could get to all had good continuity from the...
  14. AfricanSnowOwl

    Extremely rich and rough idle

    Yeah the ECU is good. A bad DVOM lead me down a path of replacing the factory ECU about a month ago, which was actually good. It got replaced with a refurbished ECU and there were no changes whatsoever.
  15. AfricanSnowOwl

    Extremely rich and rough idle

    Yeah I've also got a thread on Stangnet about this. With a vacuum gauge hooked up, it'll read around 14-16" with a little bit of fluctuation. I was assuming the fluctuation was from the idle surging... The spark plugs(new Motorcraft AWSF32C) are all gapped at .052ish. I double checked them the...

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