88 928 failed et on co
11-17-2006, 04:44 PM
#1
1st Gear
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88 928 failed et on co
fighting problem w/adaptation,keeps adapting full rich w/new air mass meter, coolant temp sender, o2 sensor,no vacume leaks,the only thing i don't have to try is known good ecu. If anybody hit this wall let me know thanks mike 303-601-3091
11-18-2006, 12:46 PM
#2
Burning Brakes
Are you sure that it is going full rich? While that will cause high CO, it most likely will also cause high HC. I am not sure what the '88 has but if there is an air pump you may not be getting the air needed for the cat to deal with the CO created.
