Changed my oil and now my rear end is busted...
08-20-2006, 06:15 PM
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Changed my oil and now my rear end is busted... Yeah, another one of those weird this caused that threads.
I changed my oil today, put in some GC 0w-30. I did everything right as far as I know, but now when I put the car into any gear, my revs drop to 600 and the rear end starts making noise. When it's in Park or Neutral it's at about 900rpm, but put it in gear and it drops, makes a noise in the rear, and doesn't move. Kind of like when your on an incline and let go of the brake and don't give it any gas.
What happened?
I changed my oil today, put in some GC 0w-30. I did everything right as far as I know, but now when I put the car into any gear, my revs drop to 600 and the rear end starts making noise. When it's in Park or Neutral it's at about 900rpm, but put it in gear and it drops, makes a noise in the rear, and doesn't move. Kind of like when your on an incline and let go of the brake and don't give it any gas.
What happened?
08-20-2006, 07:17 PM
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Originally Posted by Vicious.
but now when I put the car into any gear, my revs drop to 600 ......When it's in Park or Neutral it's at about 900rpm, but put it in gear and it drops
Idle speed is 550 in gear/650 in park for the A4 car. The factory tach is not 100% accurate though, so usually my tach will show more like 650-700 in gear and 750-800 in park. Yours showing a drop on the gage from about 900 to about 600 seems normal enough to me.
As for the noise and the lack of movement, are you sure it's not a trans related issue rather than rear end?
My best advice? Do another oil change and see if it goes away.
J/K!!
08-20-2006, 09:15 PM
#3
No offense, but that sounds like a perfectly normal idle for a A4. In neutral, it should be around 900 rpm, in gear it should be around 650rpm. Now if your rear is making noise, how the hell is that related to engine oil???
08-20-2006, 09:47 PM
#4
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my RPM gauge reads 550 in D and 600 in N. perfectly normal.
as for the rear clunkings, it could be tranny or rear problems. both common for an A4 f-body
or maybe there's no problem at all. every automatic i've ever driven has a slight clunk or bang when shifting from P or N to D. it's just the gears shifting.
whatever it is, it's not your oil. i think you're overreacting. it's likely always done this, but now that you switched to GC 0W-30, you're obsessed with finding noises to see if this oil is all it's cracked up to be. you're concentrating so hard to find noises, normal noises are beginning to sound like problems or you're noticing noises that were always there and you've never paid any attention to. i think it's all in your mind. you're looking for problems that aren't there.
as for the rear clunkings, it could be tranny or rear problems. both common for an A4 f-body
or maybe there's no problem at all. every automatic i've ever driven has a slight clunk or bang when shifting from P or N to D. it's just the gears shifting.
whatever it is, it's not your oil. i think you're overreacting. it's likely always done this, but now that you switched to GC 0W-30, you're obsessed with finding noises to see if this oil is all it's cracked up to be. you're concentrating so hard to find noises, normal noises are beginning to sound like problems or you're noticing noises that were always there and you've never paid any attention to. i think it's all in your mind. you're looking for problems that aren't there.
Last edited by ChocoTaco369; 08-20-2006 at 09:52 PM.
08-20-2006, 10:20 PM
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Yeah, please disregard my post. It was mostly just me freaking out.
After letting the car sit for a while and taking it back out again, my RPMs went back to normal. About 900 in neutral and 750 - 800 in gear. But honestly it was at 600ish the first time I started the engine and took it for a drive. The car would not move on its own when I took my foot off the brake. Apparently just letting it sit was enough to make it all better.
This was the first oil change after buying the car, with an oil that I've only heard things about instead of having used. All I was thinking was "Oh jeebus, what did I do wrong", and that kind of freaked me out. So yes, I was being pretty nitpicky and tried to figure out every little thing that had changed.
I did just get to drive it for an hour and a half, and I am liking the GC very much. My oil pressure was higher than usual, the temp. was slightly lower than usual, and the engine seemed quieter.
So, in short, I'm an obsessive idiot, and I feel really dumb now. But thanks for reading and not reaming me too bad.
After letting the car sit for a while and taking it back out again, my RPMs went back to normal. About 900 in neutral and 750 - 800 in gear. But honestly it was at 600ish the first time I started the engine and took it for a drive. The car would not move on its own when I took my foot off the brake. Apparently just letting it sit was enough to make it all better.
This was the first oil change after buying the car, with an oil that I've only heard things about instead of having used. All I was thinking was "Oh jeebus, what did I do wrong", and that kind of freaked me out. So yes, I was being pretty nitpicky and tried to figure out every little thing that had changed.
I did just get to drive it for an hour and a half, and I am liking the GC very much. My oil pressure was higher than usual, the temp. was slightly lower than usual, and the engine seemed quieter.
So, in short, I'm an obsessive idiot, and I feel really dumb now. But thanks for reading and not reaming me too bad.
08-21-2006, 08:35 AM
#6
Tech Resident
Originally Posted by Vicious.
So, in short, I'm an obsessive idiot, and I feel really dumb now. But thanks for reading and not reaming me too bad.
being paranoid is far better than being cheap or just plain not caring.
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08-21-2006, 04:33 PM
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Originally Posted by ChocoTaco369
whatever it is, it's not your oil. i think you're overreacting. it's likely always done this, but now that you switched to GC 0W-30, you're obsessed with finding noises to see if this oil is all it's cracked up to be. you're concentrating so hard to find noises, normal noises are beginning to sound like problems or you're noticing noises that were always there and you've never paid any attention to. i think it's all in your mind. you're looking for problems that aren't there.
