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  #1  
Old 08-08-2009, 11:13 PM
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Newbie needs help! Slow go up hills

Hey all, I'm a new owner of an 82 300sd. This is my first MB and first Diesel. She slows down badly going up hills (about 30mph at most). I changed both fuel filters, but it didn't seem to help. It is very dangerous to make a left hand turn in traffic. I am reading about an ALDA, but I don't even know what that is. Plus she will only downshift if I floor it, I think there may be a cable problem there, otherwise she shifts from 1-3 in the first 25-30 mph no matter how much fuel I am giving it. She shifts fine on normal driving conditions, but if I push her the trans flares. I know one problem at a time, so I guess I need the most help with the lack of power.

Thanks!

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  #2  
Old 08-09-2009, 12:24 AM
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Do a search on banjo bolt. It may be your problem.

Dont be afraid to manually shift it.
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  #3  
Old 08-09-2009, 01:01 AM
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First - adjust your linkages per the Factory Service Manual article. As part of this procedure you need to re-set your bowden cable - its a white nut on top of the valve cover that tells the trans when to shift. Yours is off somehow.

Second - I second the banjo bolt cleaning suggestion.

Also, verify the the turbo boost line is connected.

On my 85 when I bought it, owner said the car had no power. Found a broken boost line...reconnected...power was back

dd
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Old 08-09-2009, 10:30 AM
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Third - check the level of your transmission fluid.
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  #5  
Old 08-09-2009, 10:50 AM
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After all that play with the ALDA. It's a quick solution but not a fix. You may need to adjust the valves, throttle linkage, make sure the turbo is working right. I played with my IP timing and my SD is no slouch
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  #6  
Old 08-09-2009, 11:02 AM
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Thanks everyone, I'll go out this afternoon and play around with it. I did make a mistake however on the power issue. I wasn't test driving it under the same conditions. This morning I took the exact same road and wow, it never slowed down (well a little) but I chugged right up the same hill at 55 vs the 35 last week. The fuel filters were a problem.
Rick
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  #7  
Old 08-09-2009, 01:01 PM
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Ok the vacuum switch had been bypassed and ran straight from the ALDA to the banjo bolt. I cleaned the bolt, line and the vacuum switch, hooked it all back up like it should be and wala more power, she still won't spin tires, (not that I would want to do that) but she has a lot more power than before. I also adjusted the cable to the trans and she shifts out better. I noticed however that there is a lot of oil residue inside the air filter, is this a normal thing? The hose that runs from the valve cover to the air filter was wet it had so much oil build up on it.
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  #8  
Old 08-09-2009, 01:17 PM
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Quote:
Originally Posted by echpa105 View Post
Ok the vacuum switch had been bypassed and ran straight from the ALDA to the banjo bolt. I cleaned the bolt, line and the vacuum switch, hooked it all back up like it should be and wala more power, she still won't spin tires, (not that I would want to do that) but she has a lot more power than before. I also adjusted the cable to the trans and she shifts out better. I noticed however that there is a lot of oil residue inside the air filter, is this a normal thing? The hose that runs from the valve cover to the air filter was wet it had so much oil build up on it.
Yup, the oil is nothing to worry about. It means that your car has blowby which isn't too much to worry about unless it is REALLY bad. If you want to check blowby take the cap off of your valve cover while its running (or take breather tube off) and see the oil vapor spewing out the top. Mine is so bad that the entire air cleaner is pretty much soaked in oil. A good action would be to clean it if possible from all the dirt that could have caked up inside of it to clear the airflow. Also in the future you may want to disable your EGR - the PO may have done this already if they were willing to bypass the overboost valve.
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Old 08-09-2009, 01:25 PM
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I dont know of many SD's that will spin tires on dry pavement. Mine will power brake if you force it. My TD has never had any "tinkering" done to it, still had the ALDA tamper cap. It would not move out of it's own way. It seems twice as fast now and I still need to time it, valve adjust and check the linkage.
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  #10  
Old 02-12-2011, 11:02 PM
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z1
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  #11  
Old 02-13-2011, 10:34 AM
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z1?

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