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  1. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    i just realized i neglected to update my sob story here! i finally figured out what the idle problem was, the distributor!! i put a new one and the truck idles perfectly. I had the front and rear suspension rebuilt (too heavy a job for this old guy :-)) using dropped spindles in front, and...
  2. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    Ooooooh that should make a difference to set the base idle in Drive! thanks so much Clayton. On a completely unrelated subject I notice you are in Eugene, many years ago i attended that "other" college 40-50 miles north of you, lived in Corvallis and spent a summer working in Astoria. I...
  3. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    thank you Chevyguy, i have checked the TPS and the CTS, both are operating in the proper range. Since GM does not want people messing with the idle speed, there are no official procedures in the manuals to do that. My question is, once you reset the IAC to fully closed position, disconnect it...
  4. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    UPDATE; First my appreciation to all you that contributed your knowledge here. I ran out of ideas and the engine was still running terrible, so i took it to a shop. They discovered the valves were too tight! When I received the long block, it had a big red tag that said "CAUTION; this engine...
  5. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    Hey Chevyguy, thank you. I have a spare TPS, i will just replace and see what happens. Are you saying the backward battery incident damaged the Oxygen sensor, or that was a separate issue? My O2 sensor is the single wire, which i assume works by varying resistance, and I don't think that...
  6. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    As I have gotten up in years (i am 67) i find it easier to accept my mistakes and even laugh at myself when i screw up. In fact ol' buddy, you seem to have some sway in this chat room, i propose the creation of a category up there with "Engine and Performance" and "Suspension" and we can call...
  7. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    Thank you again Vince. I thought that the "minimum idle" is set with the IAC disconnected, that is what i was trying to do, but the engine is running so rough that i am nowhere near setting a minimum idle nor able to set the timing. One thing i try to avoid (apparently not very successful in...
  8. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    Thanks so much Vince. I did as you recommended, i had to turn the idle screw to open the butterflies a tad, i this seems to have helped but the engine is still running very rough and had to keep it around 1,500 rpm or it died. all of this was done with the IAC disconnected, and while it was...
  9. 53charlie

    Need help sorting out no idle on new 5.7 TBI engine

    I have recently installed a new 5.7 long block in my '87 Chevy pickup. after i had the engine installed and connected i made a very stupid mistake (I was very tired!), first connected the positive cable to the negative battery terminal, and when i brought the negative cable close to the...
  10. 53charlie

    Driveshaft support bearing orientation

    Thank you for your reply dvdswan, the reason I have the driveshaft out is that I changed to a 700R4 trans (i had a TH400 before), so I had to look for a driveshaft front section from a truck that came equipped with the OD trans (3" longer), i found it, the U-joint is perfect but the carrier...
  11. 53charlie

    Driveshaft support bearing orientation

    Hi all, i am replacing the support bearing on my 1987 longbed. I have pressed the old one out but i am wondering if it was pressed in backwards? the support bearing is not symetrical, there is a front and a back, and there is also a small spacer, which i want to verify if it is pressed ahead...
  12. 53charlie

    Plan B in Memphis

    New to this website as of this week. A couple of months ago I bought a '87 longbed with a VERY tired original 305, it started and ran, but it left a smoke trail like the Space Shuttle. Over the Memorial Day weekend yanked the engine and TH400 trans and installed a TBI 305 / 700R4 from an '89...

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