Not sure if these two are related. I did an engine swap to a bored/stroked 2.9, and have a few new issues. First is a hard start. Have to crank over a bunch before it gradually catches on and runs. Starts easily when warm, and runs strong on the road. When cold, it seems to idle at normal speed. When warmed up and after throttle goosed, it goes into a romping idle pattern, like a sine wave. Identical to having a bad throttle position switch, including the bucking ride while driving between on/off throttle in first gear. Along with it, the power antenna goes up even with the radio off. Another thing, since the battery was disconnected for a couple of weeks during the swap (I'm slow), the batteries in the dash (for the SIL) died and now my tach and MPG meter are dead. Don't know if that would be a factor.
At first, I thought it was a simple case of a bad TPS, but unfortunately that's not the case; I've swapped out the idle throttle position switch twice, the idle control valve twice, and even the MAF sensor twice (it has a Miller MAF conversion). No dice. This antenna issue is also new, so I wonder if there's an electrical glitch somewhere as a unifying diagnosis. Any ideas?
At first, I thought it was a simple case of a bad TPS, but unfortunately that's not the case; I've swapped out the idle throttle position switch twice, the idle control valve twice, and even the MAF sensor twice (it has a Miller MAF conversion). No dice. This antenna issue is also new, so I wonder if there's an electrical glitch somewhere as a unifying diagnosis. Any ideas?
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