ROUGH IDLE
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From: salem usa
ROUGH IDLE
1994 f-150 / 1/2 tn / 2wd / 5 spd / w-o air / just replaced stock motor , 6 cyl. 300 Y 4.9L MFI complete long block. runs great in general. now have 56 miles on new motor & when started all seem's great , sound , feel , look BUT !! after initial start up ( about 30-45 second's) the idle drops & a rough idle condition now exsist's.. i have done multiple check's on vacum , NO leaks . timing is set at 10* BTDC with all vacum plugged & spout pin connector removed. timing is perfect from what i can tell ( original dist. used / TFI-IV with remote mounted ICM module) I AM LOST .. truck ran great before with old motor ( motor replaced due to damage from wrong water pump installation - bolt thru #1 cylinder) , anyway,, even performed self test by jumping EEC-IV self test ( STI) system on board. and only got 2 codes , 111 system pass & 522 Vehicle not in PARK or NEUTRAL during KOEO. HUMM..............even tried both advance & retard timing from spec , but no difference in correcting condition... any & all help would be welcome.. before i must take to dealer shop... please post here or for faster result's PLEASE e-mail me @ coorslight4u@attbi.com..... or even phone help ( i pay long distance),,, thank you ...............MICHAEL
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