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  1. G

    Need help

    O2 SENSOR READINGS ARE ALL OVER THE PLACE. LOOKS FINE THEN DIVES TO ALMOST ZERO. I HAVE REPLACED THE O2 SENSOR AND SAME PROBLEM. I HAVE CHECKED THE IAC AND CLEANED IT.I HAVE REPLACED THE MAF WITH A SPARE 87 UNIT. i HAVE A LT1 MAF I WAS USING WITH THE MAF TRANSLATOR BUT STARTED GETTING 33 AND 34...
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    O2 Sensor problems.

    I have replaced the O2 sensor today. The readings after a while go above 700 to the 800 range. Everything seems fine then there is a stumbling and the readings head south to below 100. This is all at idle.What can be the matter? I need help.:confused:
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    Not much boost.

    Was at the track for the first time Friday. Pathetic times, no power on top end. Had 5 lbs. boost first time. Adjusted waste gate rod as short as possible and got to 10lbs. and no more. Checked hoses from dual waste gate controller and seemed ok. I have my boost gauge inline( t-d)with the hose...
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    Knock sensor socket size

    I am being lazy, but car is parked elsewhere and I have to haul my tools over. Does anyone know what size socket the knock sensor takes. I am going to try removing it and reinstalling like Brad suggested. Thanks:biggrin:
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    Fan clutch replacement

    My fan clutch is showing some wear and tear. The seal was gone and the bearings were showing. At the time I was not sure what replacement to get from my parts supplier. Is it important to get a thermal or non-thermal unit? I got and have installed a Hayden part #2707. Not much info but looks...
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    Knock sensor removal

    I have an aftermarket knock sensor installed in my '85. Is it ok to disconnect my factory knock sensor? If I watch my scanmaster at WOT I get a knock indication but nothing from the aftermarket unit. I do not hear any engine knock. I am running 94 octane with some VP C-12. Any direction...
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    Blow Off Valve

    Hi Guys Just wondering if the hot air cars require blow off valves. If so, where would you mount it? Any pics or reference would help. Thanks
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    Retard

    Got ECM upgrade, boost gauge, knock gauge, 42 lb. injectors and upgraded fuel pump. Fuel set for 42 lbs. . My problem is the scanmaster says engine retarding when I have my foot into it and I hear no knock. I have a cold air intake and LT-I Maf with a maf translator. Also running a turbotweak...
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    Spark plug wires

    Hi guys I have upgraded my 85 GN to the 86/87 ecm. I am confused as to wear to place plug wires on the coil module:(:(. Could some one advise me please. Pics are always good. Thanks
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    Convertor Question

    Was wondering what size torque convertor, stall for the 200r4. I have recently purchased used from a fellow Gn owner. He had it connected to his car and recently showed 625 hp on a dyno run. It is supposedly enhanced with some go fast parts. I am going to install it in an 82 El Camino with a 350...
  12. G

    Knock problems

    I have an 85 GN and have done the 87 ECM conversion. I have a happy scenario if I run my stock MAF sensor for an 85 and the installed MAT sensor for the conversion. When I place an 87 MAF sensor and Mat sensor together and run it is ok till I do some hard runs then she wants to knock. If I...
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