StoningtonXC70
08-11-2010, 04:43 AM
In the last few days, I have had more than a few incidents with my 98 V70 XC where the engine would not crank on startup, but would eventually do so after repeated attempts. When this happens, I can hear the starter relay solenoid pick up, and the lights will dim, so I believe that the stater is drawing current, and has a dead spot on the commutator, and or bad brushes. On the last incident, after several unsuccessful repeated starting attempts, it cranked immediately after giving the starter a whack with a big crescent wrench. At 185K, its probably time for a new starter.
While attempting to replace the starter last night, I came across a small diameter vaccuum line that wasn't connected to anything lying down below the throttle body. I had just removed the plastic shroud over the throttle body, and had not yet touched anything else. I could not find anything that it should be connected to within the reach of its length.
It has a single white tracer marking on it. The other end appears to be somewhere up behind the drivers side end of the head (could not trace it any further, got buried into a bunch of other hoses).
I don't think it came loose when I simply removed the TB shroud. Judging by the condition of the end of the line, which seemed pretty crusty, with the factory clamp moved up the hose about a half inch of the bitter end, it seems to have been floating loose for a long time.
After I got the turbo intercooler hose sections out of the way to get at the starter bolts, it had gotten pretty dark. It looked like getting the bolts out, and disconnecting the starter wiring was going to be a real PITA. I decided that I would bite the bullet and turn over the rest of the job to my local indie mechanic. I reinstalled all the turbo plumbing, and the car started and ran totally normal. I did not feel any vacuum suction or pressure on the end of the mystery vacuum hose with the engine running. The car has not been throwing any CEL codes either before or after I came across the mystery hose.
Any ideas what the mystery hose might be? I could not see anything about it on the small and hard to read vacuum hose diagram sticker on the underside of the hood.
While attempting to replace the starter last night, I came across a small diameter vaccuum line that wasn't connected to anything lying down below the throttle body. I had just removed the plastic shroud over the throttle body, and had not yet touched anything else. I could not find anything that it should be connected to within the reach of its length.
It has a single white tracer marking on it. The other end appears to be somewhere up behind the drivers side end of the head (could not trace it any further, got buried into a bunch of other hoses).
I don't think it came loose when I simply removed the TB shroud. Judging by the condition of the end of the line, which seemed pretty crusty, with the factory clamp moved up the hose about a half inch of the bitter end, it seems to have been floating loose for a long time.
After I got the turbo intercooler hose sections out of the way to get at the starter bolts, it had gotten pretty dark. It looked like getting the bolts out, and disconnecting the starter wiring was going to be a real PITA. I decided that I would bite the bullet and turn over the rest of the job to my local indie mechanic. I reinstalled all the turbo plumbing, and the car started and ran totally normal. I did not feel any vacuum suction or pressure on the end of the mystery vacuum hose with the engine running. The car has not been throwing any CEL codes either before or after I came across the mystery hose.
Any ideas what the mystery hose might be? I could not see anything about it on the small and hard to read vacuum hose diagram sticker on the underside of the hood.