New Motor Won't Idle
#1
I just put a new s4 motor in an 86 GXL auto. We got it running but it won't idle. We have tried everything we can think of but no luck, It dies below 2k. There was one vaccum line that is unpluged. It is the one that goes from the middle hole on the Throttle Body to the little hole on the motor side of the LIM. We forgot about it when bolting the fuel system back up. Is this the reason it won't idle? I mean it is just one hose. Thanks for the advice,
John
John
#3
Jim, in a simple answer, it is highly possible
Now for the technical answer why, you have left an open unmetered air source out to the atmosphere, the air the air flow sensor measured had the fuel calculated for it through the ECU, now you have given the car a source of air that the fuel is not being measured for, so in essence you are running overly lean. I highly suggest plugging the vacuum leak and trying again
Now for the technical answer why, you have left an open unmetered air source out to the atmosphere, the air the air flow sensor measured had the fuel calculated for it through the ECU, now you have given the car a source of air that the fuel is not being measured for, so in essence you are running overly lean. I highly suggest plugging the vacuum leak and trying again
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