Thanks, but I'm not doing the work, my mechanic is.  I did pretty much diagnose 
it, but I'm not turning the wrenches

Donald H. Snook




> On Feb 20, 2015, at 5:14 PM, "arche...@embarqmail.com" 
> <arche...@embarqmail.com> wrote:
> 
> Sounds like a winner. Good job!
> Gerry
> 
> Donald Snook wrote:
> 
>> Tested the fuel pressure. No fuel pressure.  So, removed the pump and bench 
>> tested.  It failed.  So, replacing, fuel pump, fuel filter and fuel pump 
>> relay.  
>> 
>> Don Snook 
>> 
>> -----Original Message-----
>> From: arche...@embarqmail.com [mailto:arche...@embarqmail.com] 
>> Sent: Thursday, February 19, 2015 9:32 AM
>> To: Donald Snook; Mercedes Discussion List
>> Subject: Re: [MBZ] OT BMW diagnosis
>> 
>> Haven't been following this thread, so this question may already have been 
>> asked:
>> Did you change the primary fuel filter? Primary AND secondary? I'm thinking 
>> of water or debris in the gas.
>> Gerry
>> 
>> ----------------------
>> Donald Snook via Mercedes <mercedes@okiebenz.com> wrote:
>> 
>>> You know that is a great thought!   I had not even thought about that.  I 
>>> haven’t checked the codes yet, but is definitely a good idea.
>>> 
>>> Thanks Ernest and Jim for mentioning that!   If the CPS is out, it will not 
>>> start, it will just crank and act like fuel starvation!
>>> 
>>> Snook
>>> 
>>> From: ernest breakfield [mailto:erne...@backyardengineering.org]
>>> Sent: Wednesday, February 18, 2015 12:11 AM
>>> To: Donald Snook; Mercedes Discussion List
>>> Subject: Re: [MBZ] OT BMW diagnosis
>>> 
>>> sounds very much like a Crankshaft Position Sensor failure i had on another 
>>> vehicle.
>>> 
>>> 
>>> cheers!
>>> e
>>> On 17/Feb/15 10:25, Donald Snook via Mercedes wrote:
>>> 
>>> I  know this is a Mercedes list, but I am having a problem with my BMW.   
>>> It is a 2000 BMW 740iL with 216,000 miles.   Yesterday I had to make a trip 
>>> to a town about 35 miles away and it started acting up.  It felt like a 
>>> misfire.  If I was going at a constant cruise on the highway (75-80 mph), 
>>> it was going great.  But, when I had to climb a hill or accelerate, it 
>>> started sort of jerking, like a misfire.  It felt like a bad plug or plug 
>>> wire (I know this engine doesn't have wires, but that is what it felt 
>>> like).   As I went further it got worse.   I arrived in the town, took care 
>>> of my appointment and headed back.   Same thing. If I had to accelerate, it 
>>> started jerking and bucking.  At a steady cruise it was fine.   I decided I 
>>> would replace the plugs (I have had it for over 40,000 miles and have not 
>>> done them).  I think they were done previously with a little over 120,000 
>>> miles.   I stopped at Autozone and got the plugs and headed home.  My house 
>>> is ten minutes a
>>> 
>>> w
>>> 
>>> ay.   As I pulled into my subdivision, it stalled.  It would not restart.  
>>> It just cranked and cranked.   So, I am pretty sure that means its fuel.   
>>> I parked it on the first street and walked home (it was only 5-6 blocks).   
>>> I thought I would try again in the morning.  So, my wife and drove over and 
>>> I tried starting the car.  As soon as I hit the key, it cranked and turned 
>>> over, but stumbled and died.  Then, it would only crank --  not start.
>>> 
>>> 
>>> 
>>> Sounds like fuel, right?  The SES light came on a week or so ago.  I was 
>>> going to bring it to my guy and assumed he would say, it was O2 sensor.  
>>> Now, I am not so sure.  The SES could be signaling misfire, because I think 
>>> the computer shuts off fuel to misfiring cylinders.  But, the fact that it 
>>> will only crank now sounds like Fuel pump, fuel pump relay, etc.   Last 
>>> weekend, (not the one a couple of days ago, but the previous weekend), I 
>>> drove to Ardmore Oklahoma and back (600 miles total driven) at highway 
>>> speeds (sometimes even higher :) )  and it did great.  No problems at all.  
>>> The only thing I have noticed is that if I drove exclusively on the 
>>> highway, I could get 25-26 MPG. But, the last few trips, the best I could 
>>> get was 22-23 mpg and on this last trip it was 21.   I had attributed that 
>>> to either O2 sensor, or plugs or just winter fuel, heavy foot, etc.
>>> 
>>> 
>>> 
>>> Anyone have any experience or ideas?
>>> 
>>> 
>>> 
>>> If I can't get it started, I am going to have to tow it to a shop.
>>> 
>>> 
>>> 
>>> Don Snook
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________
>>> 
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>> 
>> -- 
>> arche...@embarqmail.com <arche...@embarqmail.com>
>> 
>> 
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> 
> -- 
> arche...@embarqmail.com <arche...@embarqmail.com>
> 
> 
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