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  1. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    Actually, I just did. Its gone on its way to the Albany area now. It was sold to someone who appreciated the car. I anticipate it will do very well with its new owner. Now I am looking for a car to work on...I have a dual quad Buick 430 and a Buick 455 4 barrel on stands in the garage. I...
  2. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I've found a hypertech chip for the car. Should be a little improvement. Although we just got snow so the roads are all salted again..... Hopefully it will rain soon
  3. techg8

    Someone save this 84 H/O

    Lol you guys are hard to please! Looks like a good start on a 84 hurst olds project to me! These dont grow on trees, and I've seen plenty waaaaay worse. I'm not from California or AZ
  4. techg8

    My new 84 H/O

    Nice car, congrats!
  5. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    So after a winter spent leaking a river of fluids on my garage floor, the Hurst it back in action. I found the trans leak at the lockup electrical connector o-ring. Fixed. Power steering gear was leaking at the input seal. Pulled it apart for a full reseal job, and its dry as a bone now...
  6. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I am only finding the headlamp switch w/o interior dimmer new. Only finding the combo switch used on ebay. I will take a look at it today. Maybe I can find a fix. The problem likely is the foil circuit.
  7. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    Do you have a number for the instrument panel lighting dimmer rheostat?
  8. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    When the rheostat for the gage dimmer is all the way off, the lights work right. If I use the gage illumination the hi beam indicator turns on for low beams and off for hi beams. Also a turn signal indicator lamp stays on. Might be a foil circuit problem? Gages all work correctly.
  9. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    Thanks for the Distributor wrench trick guys. I used a 1" open end wrench on the distributor "square", and with a little persuasion via hammer, it finally broke free and rotated. With the test terminal grounded at the ALDL, I set base timing at about 20-24 degrees. It was flopping around a...
  10. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I credit 307 403 with the suggestion that got me moving in the right direction. The hardest part was relearning the CCC system and triple checking it's functions. Trying to diagnose the exact cause. The Fbody site was just corroboration. And part numbers. It seems so obvious in hindsight...
  11. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I added a lead off the power wire for my electric choke. Which I had attached at the bat terminal under the distributor cap.
  12. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    Installed an AC 213-632 today. Problem solved. I now achieve closed loop function that responds via dwell to idle mixture changes at the carb. The car is running, and smells, a lot better! Thanks for all the help!
  13. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    yep I've got an amazon order going. Ill have the sensor Monday and the connector Tuesday. will advise...
  14. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I found a deal on AMAZON. got an AC Delco 213-3076 heated sensor for $14! its on the way and Ill give it a try at that price. EDIT: ….and i see that 213-3076 is a WIDEBAND AFR four wire setup that I believe inverts the output. In our cars with a full rich command - low dwell - we should...
  15. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    yes they are one wire, but no the sensor circuit does not ground at the exhaust. That would be a short circuit and would omit the ECM. I was referring to checking the ECM O2 sensor circuit ground. voltage generated by the O2 sensor runs through the purple wire to the ECM, then back out the...
  16. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    I am going to recheck the O2 sensor circuit ground for opens or poor ground. Otherwise I think the heated O2 sensor may be the solution. Will advise.
  17. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    yes I have put the engine on the fast idle cam 2500-3000rpm and watched dwell while I choked the carb and made vacuum leaks. no changes in dwell. The only time the dwell seems to change is as follows: cold start ~32dwell seems to change to 40 or so once the engine heats up a bit. It does not...
  18. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    yes headers. I took a look in the pipe and the o2 sensor is not obstructed at all. It is very much in the exhaust stream. About an inch or two back from the collecter flange its perplexing. All of the sensors check out good. TPS, temperature, and o2. No codes are set. System appears to be...
  19. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    The thing here is, the dwell isn't varying like closed loop should. It sticks at a value like it's in open loop. The dwell when hot does not respond to changes at the idle air bleed or mixture screws. Does not react to manually closing the choke flap. This tells me it's likely in open loop...
  20. techg8

    BUILD THREAD 84 Hurst Olds - TechG8

    Its as if the sensor is not sending enough voltage and the system is not going into closed loop function as a result. I checked the bung installation. It is an inch or two rearward of the header collecter, in the head of the exhaust pipe. I looked into the pipe and the sensor is not at all...

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