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Everything posted by Fairtax4me
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P1325 means the reference voltage to the knock sensor is being grounded before reaching the sensor or the sensor is damaged internally and its resistance is lower than it is supposed to be. If you have an ohmmeter you can test the circuit. Use a paper clip or needle to back probe the sensor connector, turn the key On and check voltage at the connector. Should be around 2.5 volts. Now unplug the sensor and check voltage again, voltage should be about 5 volts. If voltage is less than 4.5v, the signal wire to the sensor is probably shorted somewhere. Check resistance of the knock sensor. It should be 560k-580k ohms. If resistance is higher, remove the sensor and make sure the mounting surface under the sensor is clean and free of corrosion. Re-check resistance of the sensor with it removed from the car. If the resistance is lower than 560k ohm, the sensor is damaged and should be replaced.
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99 should have a stub on the trans with a roll pin holding the axle on. Knock the roll pin put with a punch and the axle slides off. The hard part is the wheel end. Axle nuts get rusty/seize, ball joints are difficult to get loose. I usually just undo the lower strut bolts. Loose the lower and remove the upper. Clean and Mark the alignment of the strut base with the knuckle first so you can line them back up the same when done. Once the knuckle is pulled out the axle easily pops off of the inner stub then you slide it back out of the wheel hub. I've done them in less than 20 minutes on my own cars, but that's because everything has been apart before and is well coated with antiseize and grease to prevent rust.
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Some small flakes can be normal. The engine sheds metal the whole time its in use. Any mechanical thing does. If you start seeing bigger flakes or lots of silver swirl in the oil, that can be a sign of a major problem. Ill second getting an oil analysis done if its something that bothers you. Usually about $25. Ive used Oil Anayzers Inc several times in the past and they are pretty quick.
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Thanks for the replies. Been super busy with work lately. Trying to learn all I can about golf carts and ATVs since those are the two major projects I'm facing lately. 15 Golf carts of all different years and configurations. Gas, electric, some that run, some that don't, most of them broken or in need of significant repair. So I've been perusing several golf cart forums and lots of websites for info on those. All u-joint drive shafts wobble when they're spinning, because of the nature of the way a U-joint works. They don't rotate perfectly on center, so the two u-joints on a typical driveshaft are offset so the amount of wobble is balanced, which cancels out the vibration that it causes. The angles of the u-joints also have to match so that the off-center distance of the shaft is equal at each end as it spins around. This is fairly common knowledge in the 4x4 and jeep off-road world since they regularly install large lift kits that require altering driveshaft angles. In Subarus case, I think they went with a two peice shaft for several reasons. One being clearance. To keep the COG as low as possible they have mounted the driveshaft very high up in the transmission tunnel. (Basically moved the frame and chassis of the car closer to the ground.) This requires using a small diameter driveshaft, only about 2-1/2". But due to the length of the shaft, there is a high chance of the shaft flexing and oscillating during certain load conditions and certain RPMs. To cut down on that the shaft is chopped into two peices, with a third u-joint, and a carrier bearing used in the center to support the driveshaft. The problem with that is it adds another point where lateral movement can occur, which can cause a sloppy feel and cause vibration if the carrier bearing support wears. It will also cause a major vibration if the u-joint angles are even slightly off, because there isn't a 4th u-joint to balance out the motion of the third. As a result, the driveshaft has to be almost a perfectly straight shot from transmission output shaft to differential pinion flange. DSS makes their steel and aluminum driveshafts out of 3" tube, which requires minor modification to certain parts under the car for clearance around the shaft (such as the lower rear diff cover). The driveshaft is less likely to oscillate due to the larger diameter tube. On a standard height vehicle, there may also be modifications necessary to the shift mechanism and linkage, and to the driveshaft tunnel. My car is lifted, with 2" crossmember blocks front and rear, so I have plenty of room for the wider diameter driveshaft, and plenty of room for adjustment if I need to adjust transmission output shaft and rear pinion angles. I've heard about similar humming/vibration sounds from other vehicles with carbon fiber driveshafts. Kinda wonder if that's a harmonic vibration occurring because of the rigidity of carbon fiber. As on case anyone is wondering, yes there are some vehicles with 3-peice driveshafts. (4 u-joints and two carrier bearings)
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On these the copper terminals are usually the high current side/switched side. Plated or silver terminals will be the control/coil side. Quick check is the poke them with an ohmmeter. One set of terminals will show some amount of resistance (8-15 ohms maybe, depends on the relay). The other set will show either infinite resistance or 0 resistance depending on if its a normally open (most common) or normally closed relay.
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The original bolts are torque to yield bolts, but people re-use them all the time. The first few steps up to the "back of 180°" step only seat the gasket in a certain way to help make the gasket crush more even on the final torque steps. That process does not cause the bolts to stretch at all. By the time the process is done the bolts will be torqued to over 100 ft lbs. Even then the bolt stretch is minimal, which is why the Subaru bolts get re-used all the time. Aftermarket bolts may not fare as well to repeated use. The torque procedure in the service manual applies to any head bolt, factory or aftermarket. If the aftermarket bolts required a different procedure that would be included with the bolts.
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Lucas Injector Cleaner is snake oil? I use that stuff religiously because it just plain works. I use Seafoam all the time as well. Does wonders for rough idle and hard starts. You just cant be an idiot and try to dump the whole bottle in all at once. If that car has electronic throttle control it could be in need of a throttle body cleaning.