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#16
07-27-2013, 08:54 PM
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ok i hooked the two lines together no change. i cleaned the MAF from all the black smoke from the exhaust leak and it seemed to make a little difference but it could be all in my head. i have a snapon verus scan tool what should the MAF and boost numbers be and under what condition? 
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#17
07-27-2013, 10:15 PM
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ok i smoke tested all the vaccuum lines and no leak transducers are good. maf numbers on the scantool were 400 mg/s and didnt change very much at all. what is good for this? anything else to test? still nails at idle can that be l;inked to the sluggishness?
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#18
07-28-2013, 12:23 AM
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__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#19
07-28-2013, 03:28 PM
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Ok I believe i have finally come up with a diagnosis. when checking the scan tool, i noticed the mass air flow was at arounf 400mg/s and didnt really change even under full throttle, and according to mitchell, it should be 275-300mg/s idle and 1000-1200 at 30mph wide open throttle. i suspect faulty mass air flow, 300 dollar sensor will get it this week to confirm fix.
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#20
07-29-2013, 01:21 PM
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Don't be too quick to condemn the MAF. On these cars, I have always believed it is strictly for EGR flow validation but I can see it would be logical to use MAF to determine max fueling for a given air flow. I'd like to see readings taken from an identical working car for comparison. There is a simple electronic bypass for the MAF that I'm running on my car. I can't remember all the details but there's a thread about it on here somewhere.
On the scan gauge, you should be looking at a max of about 15-16 PSI (reads about 28-29 because it's absolute) or 1+ bar for boost. If you check the vacuum at the wastegate, you should see full vacuum at idle (same as whatever you read at the vacuum source)
__________________
-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250
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#21
07-31-2013, 10:17 PM
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You were right the mass air flow didn't change the sluggish very much at all. Didn't change the numbers either. I can't seem to find boost with my scan tool. But I did hook the vacuum lines together to eliminate the transducer with no change. I have a mitt vac can I use that to check vacuum on this waste gate. How so?
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#22
08-01-2013, 04:43 PM
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this might seem silly but have you checked the boot between the intercooler and turbo? when that sucker comes off you dont get boost at all and you will have a VERY sluggish car. It's happened to me... they should have a clamp on it but it's just a friction fitting. this would be the bottom right side of the car.
__________________
hum..... 1987 300TD 311,000M Stolen. Presumed destroyed
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#23
08-01-2013, 04:46 PM
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__________________
-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250
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#24
08-01-2013, 09:04 PM
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Saturday I am removing the intake for inspection and cleaning and a search for the source of my bubbles! I'll inspect them while I'm in there. On a side note I swapped the transducers and now the car is even more sluggish, what could this mean?
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#25
08-02-2013, 12:05 AM
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