"I have a 1997 5.7LX with the
"I have a 1997 5.7LX with the Thunderbolt ignition and Rochester 4 barrel carb, which ran great some days and would not even start on others. On one of the days it would not start I found that I had power going into the ICM but none passing through (plus it somehow had water coming out of the ICM) so I replaced it. This is where the fun started. The original part was 806957-4 which even the factory had no record of such a part number so they insisted that the part was a 806957t4 which has been superseded (of course) to part number 807264A01 which is a conversion kit, so that is what I ordered. The old part said right on it that it was for the 5.7LX; however upon opening the new part the instructions (which were in the plastic which stated no returns if opened) stated that it was for all 5.7 within a certain serial number range (which my motor was in), but for engines with 2 barrel carbs. I called several dealers and the factory and they all insisted that this was the correct part, and that it was used for both 2 and 4 barrel motors as this is what both the 5.7 L (2 barrels) and 5.7LX (4 barrels) were superceded to. At this time I also replace the plugs, distributor cap, rotor, gasket, ignition sensor, and fuel filter / water separator right away. Now two problems:
#1) the motor is having a very hard time starting as it sounds like the timing is set too high, but it runs great once stated. If I back the timing off it starts easier but falls on its face. I have grounded out the purple and white wire to set the timing and adjust the carbs idle speed; however:
#2) the idle speed will not drop even when bypassing the module. It is up around 2000 RPM, and I cannot get it to do down. It will not respond to the idle screw. I have even removed the linkage to make sure that this was not the problem. The choke appears to be working properly and not hanging up.
Sooooo help! What next? Could this all be caused by the module which they insist is correct or am I doing something incorrectly? Of course there are no returns on electronic parts, even those costing $400.00, and which could be causing the problem. Is there some other way that I should be bypassing this new part? Please help, the season is so short up here and I do not want to miss another weekend."
"I have a 1997 5.7LX with the Thunderbolt ignition and Rochester 4 barrel carb, which ran great some days and would not even start on others. On one of the days it would not start I found that I had power going into the ICM but none passing through (plus it somehow had water coming out of the ICM) so I replaced it. This is where the fun started. The original part was 806957-4 which even the factory had no record of such a part number so they insisted that the part was a 806957t4 which has been superseded (of course) to part number 807264A01 which is a conversion kit, so that is what I ordered. The old part said right on it that it was for the 5.7LX; however upon opening the new part the instructions (which were in the plastic which stated no returns if opened) stated that it was for all 5.7 within a certain serial number range (which my motor was in), but for engines with 2 barrel carbs. I called several dealers and the factory and they all insisted that this was the correct part, and that it was used for both 2 and 4 barrel motors as this is what both the 5.7 L (2 barrels) and 5.7LX (4 barrels) were superceded to. At this time I also replace the plugs, distributor cap, rotor, gasket, ignition sensor, and fuel filter / water separator right away. Now two problems:
#1) the motor is having a very hard time starting as it sounds like the timing is set too high, but it runs great once stated. If I back the timing off it starts easier but falls on its face. I have grounded out the purple and white wire to set the timing and adjust the carbs idle speed; however:
#2) the idle speed will not drop even when bypassing the module. It is up around 2000 RPM, and I cannot get it to do down. It will not respond to the idle screw. I have even removed the linkage to make sure that this was not the problem. The choke appears to be working properly and not hanging up.
Sooooo help! What next? Could this all be caused by the module which they insist is correct or am I doing something incorrectly? Of course there are no returns on electronic parts, even those costing $400.00, and which could be causing the problem. Is there some other way that I should be bypassing this new part? Please help, the season is so short up here and I do not want to miss another weekend."