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Hey got a tb42 running delco 808 efi . The car is duel fuel . Anyway iv got timing at idle diled in so iv got good engine vaccume base idle set to 750 rpm iac steps set to 30 seems happy there any way it will idle at 750 for a while then the steps climb up to 48 or so after fuel change or almost stalling then it idles near 1000 rpm i turn car off and on again still idles at 1000rpm untill fully cooled off and started again cold any ideas iv checked coolant idle maps and thay seem ok ??

you got a log of it doing this ?

Yea i can put a log up when im on the laptop next iv been talking to delcowizzard and he gave me some pointers like dissable some errors and sort out tps volts it is better now but not 100 % it dosnt have a vss hooked up be cause its a reluctor speed sensor and 808 wont like so ill need a convertor for that

theres the log but have since fixed a couple of things