'88, 4.0 auto.
I got an intermittent problem where the XJ will suddenly idle rough and will not go above 1,000 RM. Previous owner gave me recent reciepts from a dealer who changed MAP, TPS, O2 sensors and cleaned TB. She said that helped for a few months then it started happening again, but not as often. The dealer could not duplicate the problem.
About a week into my ownership it happened to me. I was able to limp it into my shop, the mechanic unplugged the vacuum line that goes from the TB to the bracket located high center of the cowel inside the engine compartment (is that the MAP sensor connects?) The engine ran smooth and continued to run smooth after he reconnected the vaccum line. He doesn't really know what to tell me.
So today it happens again. The first time it cleared up before I pulled over. The second time I pulled over, uplugged the electrical connection at the bracket (engined died) wiggled the vacuum line, restarted the engine and went on my way with no problems.
Knowing what to wiggle is helpful, but I am planning on turning this thing over to my kid in a few months and I don't really want him (new driver) to worry about having to pull over in traffic and wiggle something to keep going.
So....what do you all suggest?
I got an intermittent problem where the XJ will suddenly idle rough and will not go above 1,000 RM. Previous owner gave me recent reciepts from a dealer who changed MAP, TPS, O2 sensors and cleaned TB. She said that helped for a few months then it started happening again, but not as often. The dealer could not duplicate the problem.
About a week into my ownership it happened to me. I was able to limp it into my shop, the mechanic unplugged the vacuum line that goes from the TB to the bracket located high center of the cowel inside the engine compartment (is that the MAP sensor connects?) The engine ran smooth and continued to run smooth after he reconnected the vaccum line. He doesn't really know what to tell me.
So today it happens again. The first time it cleared up before I pulled over. The second time I pulled over, uplugged the electrical connection at the bracket (engined died) wiggled the vacuum line, restarted the engine and went on my way with no problems.
Knowing what to wiggle is helpful, but I am planning on turning this thing over to my kid in a few months and I don't really want him (new driver) to worry about having to pull over in traffic and wiggle something to keep going.
So....what do you all suggest?