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  #1  
Old 10-26-2007, 01:14 AM
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oil pump

88 300se

hard to change ? where is it located ?

when idle my oil pressure seems to low ..thought i shoulg change my pump to be on safe side

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  #2  
Old 10-26-2007, 08:51 AM
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The complete oil pan must be removed.

Takes a good MB tech 6-7 hrs..
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  #3  
Old 10-26-2007, 10:27 AM
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It's a PITA!
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  #4  
Old 10-26-2007, 10:46 AM
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Bearing clearances are also a factor in oil pressure. How low is the pressure at idle? Does it rise to peg the gauge at 1500 rpm?
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  #5  
Old 10-26-2007, 01:16 PM
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Considering the fact that MB oil pumps are virtually indestructible, I wouldn't take on a job like that unless I knew for sure it would solve the problem. If you're working without a lift you can multiply the PITA factor by ten!
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  #6  
Old 10-26-2007, 02:40 PM
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BTW, what makes this a hassle is that you have to raise the engine to get the pan over the coss member and you also have to disconnect some of the steering linkage.

I bet your pump is fine.
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  #7  
Old 10-26-2007, 02:56 PM
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How many miles? Very unlikely it's the problem, if there even is a problem.
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  #8  
Old 10-27-2007, 03:43 AM
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when idle its about 1.5 on the gauge .. 190k miles

i got a engine lift and tons of tools
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  #9  
Old 10-27-2007, 07:13 AM
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barton, 1.5 bar is approximately 22 psi ... which is fine at idle. If the oil pressure increases to 3 by 1,500 RPM the oil pump and gauge are working fine.
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  #10  
Old 10-27-2007, 11:04 AM
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What does your owner's manual say it's supposed to be? 1.5 at idle sounds awfully good to me.
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  #11  
Old 10-27-2007, 05:17 PM
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i just thought it was low ..seemed low .. i dont have a manual its in storage from when i moved .. from the sounds of your posts i guess its ok then

thanks fellas

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