1983 300SD Strange Noise
bpopilek
08-12-2005, 06:02 PM
Hey ya' ll, I've got a question that I am at a loss to answer. My car just recently started making a really strange noise when I drive it. It is making kind of a high pitch squeeling/screeching sound while I'm driving it.
What I have noticed is that if I take off at a real slow speed, and maintain steady acceleration, I can get into 2nd gear without any strange sounds. After I hit 2nd gear, 40 mph, and above 2000 RPM the squeeling starts. If I take off and have the pedal to the floor, it starts the noise right away. At first I thought it may be the transmission or a noisy belt, but now I am not so sure. I have checked and tightened all the belts and the transmission was recently rebuilt before I bought the car. Aside from stiff shifting once in a while, it drives fine. I checked the trans fluid and it is red and at the proper level. Also the noise seems to be coming from under the hood vs under the car. I also just checked the oil level and it is about a quart low, filling it didn't change anything.
I also removed the A/C belt thinking that it could be a bad compressor, no go. Could this be caused by the turbo charger or something else? I want to make sure that it is nothing major as it is now my daily driver. Any help would be greatly appreciated in trying to fix this! Thanks in advance! :smile:
What I have noticed is that if I take off at a real slow speed, and maintain steady acceleration, I can get into 2nd gear without any strange sounds. After I hit 2nd gear, 40 mph, and above 2000 RPM the squeeling starts. If I take off and have the pedal to the floor, it starts the noise right away. At first I thought it may be the transmission or a noisy belt, but now I am not so sure. I have checked and tightened all the belts and the transmission was recently rebuilt before I bought the car. Aside from stiff shifting once in a while, it drives fine. I checked the trans fluid and it is red and at the proper level. Also the noise seems to be coming from under the hood vs under the car. I also just checked the oil level and it is about a quart low, filling it didn't change anything.
I also removed the A/C belt thinking that it could be a bad compressor, no go. Could this be caused by the turbo charger or something else? I want to make sure that it is nothing major as it is now my daily driver. Any help would be greatly appreciated in trying to fix this! Thanks in advance! :smile:
bpopilek
08-16-2005, 09:00 PM
Does anyone have any suggestions that I could try? Any ideas are very welcome. The noise is annoying and embarassing! Thanks!
bpopilek
08-19-2005, 04:46 PM
Is this forum turned dead or what? Nobody is even posting anymore! Any ideas from anyone at all? Thanks.
jawladar
08-25-2005, 09:38 AM
Hey ya' ll, I've got a question that I am at a loss to answer. My car just recently started making a really strange noise when I drive it. It is making kind of a high pitch squeeling/screeching sound while I'm driving it.
What I have noticed is that if I take off at a real slow speed, and maintain steady acceleration, I can get into 2nd gear without any strange sounds. After I hit 2nd gear, 40 mph, and above 2000 RPM the squeeling starts. If I take off and have the pedal to the floor, it starts the noise right away. At first I thought it may be the transmission or a noisy belt, but now I am not so sure. I have checked and tightened all the belts and the transmission was recently rebuilt before I bought the car. Aside from stiff shifting once in a while, it drives fine. I checked the trans fluid and it is red and at the proper level. Also the noise seems to be coming from under the hood vs under the car. I also just checked the oil level and it is about a quart low, filling it didn't change anything.
I also removed the A/C belt thinking that it could be a bad compressor, no go. Could this be caused by the turbo charger or something else? I want to make sure that it is nothing major as it is now my daily driver. Any help would be greatly appreciated in trying to fix this! Thanks in advance! :smile:
Reply: By now I am sure you found your problem but I will add that I had this on my 91 350 SDL and it was the alternator. The winding loosened from the shaft. I replaced the alternator.
What I have noticed is that if I take off at a real slow speed, and maintain steady acceleration, I can get into 2nd gear without any strange sounds. After I hit 2nd gear, 40 mph, and above 2000 RPM the squeeling starts. If I take off and have the pedal to the floor, it starts the noise right away. At first I thought it may be the transmission or a noisy belt, but now I am not so sure. I have checked and tightened all the belts and the transmission was recently rebuilt before I bought the car. Aside from stiff shifting once in a while, it drives fine. I checked the trans fluid and it is red and at the proper level. Also the noise seems to be coming from under the hood vs under the car. I also just checked the oil level and it is about a quart low, filling it didn't change anything.
I also removed the A/C belt thinking that it could be a bad compressor, no go. Could this be caused by the turbo charger or something else? I want to make sure that it is nothing major as it is now my daily driver. Any help would be greatly appreciated in trying to fix this! Thanks in advance! :smile:
Reply: By now I am sure you found your problem but I will add that I had this on my 91 350 SDL and it was the alternator. The winding loosened from the shaft. I replaced the alternator.
bpopilek
08-26-2005, 04:55 PM
Actually I have not fixed it yet. But, I will check the alternator this weekend to see if that is the culprit. Thanks for the reply!
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