Piston Slap: The E-Z Out for My BMW, Minivan

TTAC regular psarhjinian writes:

I just bought a E46 3-Series that needs some care (hey, it was cheap!) and snapped off both bolts holding the alternator to (I think) the oil filter housing. I’ve gotten the alernator off, but the last inch-or-so of the threaded section of one bolt is broken off. Thank you, BMW for using steel bolts in an aluminum block.

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Piston Slap: Spastic Saturn's Spacey Door Locks?

TTAC’s own Ronnie Schreiber writes:

My mom’s ’02 Saturn’s SL1 power locks freak out sometimes, sounds like solenoids are having spasms. I’ll go to lock or unlock them and they’ll start fluttering. Sometimes slamming a door will stop it.

My guess is that there’s a dirty switch somewhere, might be weather related too because it started happening in late autumn. It was easier to diagnose things when they didn’t use logic circuits for everything.

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Piston Slap: The Cadillac Hack

Geek alert! This one is tech-heavy!

TTAC Commentator Skor writes:

Sajeev,

Not a question, but it’s good to know that as long as there are cars there are people who will come up with hacks, no matter how complicated things get.

I have an 1992 Cadillac Seville and the blower motor fan disintegrated and jammed up the blower motor, which in turn shorted out the blower resistor. The squirrel cage disintegrated. I checked inside the blower housing to see if there was anything loose, but I could find nothing except pieces of the fan. All of this stuff was OE, no one has been in there since the car came from the factory. I’m sure someone at GM thought that saving a nickel on plastic was a good idea. Well, I bought a new motor/fan assembly and installed it. Wasn’t too bad, about $40. When I tried it, it was a no-go. Next thing I do is check the fuse (30 amp) it was fine. Then I checked the blower motor controller. It was blown. Crap! Apparently when the fan blew up, it jammed the motor, which then took out the motor controller. I’m thinking to myself:

“Nice engineering. The components on this circuit blow before the fuse does. WTF is the fuse for?”

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  • Alan Like all testing and analysis work you need a good set of requirements. If you don't you'll find or end up with gaps.