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  1. AirJohn

    Question: 1985 running rough at idle after warming up

    I found the problem, bad connections at and inside ECM and more Removed the ECM and found a connector pin was partially dislodged, pin D-1, one of the 12 volt connections. Next I opened the ECM and re-soldered some of the points on the circuit board where the connector pins attached there. Then...
  2. AirJohn

    Question: 1985 running rough at idle after warming up

    No room to access the computer inside the garage I have pulled both computers in our "his and hers" 1985 Corvettes, replaced both heater cores also. I am dreading having to pull the computer in "hers" because it is freezing cold here at night and there is not enough room inside the garage to...
  3. AirJohn

    Question: 1985 running rough at idle after warming up

    Will be using a scan tool, engine going into limp mode? Will be using a Snap On Solus Pro scanner this week, still getting the error 54 about the fuel pump but we know it is operating with full voltage as I have temporarily installed a secondary power line to the new fuel pump. Pin 82 on the...
  4. AirJohn

    Question: 1985 running rough at idle after warming up

    I have the GM 1985 Corvette Factory Service Manual, I got the code meanings from the FSM, the book that came with my code reader jumper device, and from these forums where you all post information that I would think would be correct, and that I trust to be mostly accurate. I work on Turbine and...
  5. AirJohn

    Question: 1985 running rough at idle after warming up

    Having issues with one of our 1985 Corvettes, it started running rough after it warmed up, running around 198 degrees or so, not getting too hot. 200,000 miles on this one. Sometimes it acted rough at highway speeds. Passed Calif SMOG test here 4 months ago. Engine ran great until it reached...
  6. AirJohn

    Help! 1985

    Should be a TPI engine, not Xfire. The fuel pump relay, between brake booster and wiper motor, gives fuel to the rails to start engine (you can hear it engage when to turn on the key, about 3 seconds), there are 2 oil pressure switches at left top/rear of engine block, look down past the wiper...
  7. AirJohn

    Help! courtesy fuse keeps blowing

    The cigarette lighter is on the same 15 amp fuse. I did not use my lighter, I used a BIC lighter. Girlfriend had to drive MY Corvette to work for 2 weeks while her Corvette had the transmission rebuilt. She kept complaining that the radio would turn off and not come back on. Yes, there is a...
  8. AirJohn

    Help! C4 Rear Speakers are Reversed now, BOSE System

    I contacted Sound Repair in Florida as recommended by Tom. They confirmed that it was not supposed to be reversed in the rear.Turns out that the radio had been previously worked on in Texas to install a newer CD device in order for it to play home made CD's. The rear left and right channels had...
  9. AirJohn

    Help! C4 Rear Speakers are Reversed now, BOSE System

    I removed the factory Delco/BOSE cassette radio in my 1985 Corvette and installed a Delco/Bose radio with CD from a 1995 Z-28, part number is 16175961. I used a wiring harness adapter that I got from my car stereo shop so as to make the installation fool proof and retain the stock wiring. The...
  10. AirJohn

    Help! Heater Core

    I replaced the heater core on my 85, used a shortcut instead of removing all the driver side parts. Before removing the heater box cover I carefully cut the air tube that goes from the left side of the heater box cover over to the driver side under dash air outlet. (The manual says to remove all...
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