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#46
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For all you early adopters out there, here are a couple shots of what I'm running right now. I guess I'll consider this a beta test but I'll probably end up leaving it like it is.
I clipped the yellow and blue wires and soldered a 22k, 1/4 watt resistor across them. Added some heat shrink. And then some fabric tape to complete the stealth conversion. Another thing I found out while driving around for a couple days testing is that the ECU doesn't care whether the MAF sensor is plugged in or not. It's just looking for a signal on the yellow wire. Good luck!
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#47
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Quote:
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#dieselFLEET --------------- '97 E300 '99 E300 |
#48
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I think that's entirely possible except that we have visual inspections here and I have to leave something there for them to look at...
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#49
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Another reason I love SC No inspections...
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#dieselFLEET --------------- '97 E300 '99 E300 |
#50
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Quote:
hi, my g463 (606.964) has different colored wires set up.....i've checked yesterday the voltage on the MAF sensor plug - it gets 5volts. i wonder which wires have you connected? btw the way you've done it (I try to recall my student years ) - is it a simple voltage divider? |
#51
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Hi, use the 2 wires on the end near the 5V wire. I think it's either 4, 5 or 1, 2.
This is much like a voltage dividing circuit but the voltage divider will have another resistor to ground.
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#52
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Ha- g-wagon maf plug has 3 wires
-5v power - "-" terminal - and I guess communication wire I've put 22kohm, 0.25w resistor between power and communication terminals on the plug - but error p1401 persists. Btwinitial p1404 disappeared. Simple wire between these terminals makes same error. Btw the initial error is p1404 but transducer is not an issue. I changed it and havent noticed any difference. Thus I guess maf sensor is an issue which leads to limp mode. So I want to make ecu ignoring maf. There is no issue with this mod in Russia as ecological standard allow even much older cars to be used. |
#53
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Btw just re-checked in the maintenance manual - maf should produce 1.5v at idle and >3v at 2000rpm. Just wonder how you can do this with liniar resistor?
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#54
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Those values are for a working MAF. It seems if the computer sees "full air" all the time it doesn't get angry.
Does the computer trip an EGR fault code after driving for a while with the mod in place? -J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#55
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22kohm 0.25watt resistor between power and com pins of the maf plug doesnt work for me - I mean p1401 error remains. tomorrow I will check whether car goes into limp mode with this resistor mod. i would suspect it should as maf sensor error remains
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#56
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I'm afraid that I'm not familiar with the workings of the 3 wire MAF sensor. Sorry.
__________________
-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#57
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this is fine - that's why we use forums - to share knowledge or to encourage ourselves to move forward
btw - simple connect of power and con pins didnt help. I'll try to put voltage divider in there and check again |
#58
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Hi Kartek,
is this 22K resistor eliminating the MAF totally? Is it all working OK? Cheers. Olivier
__________________
E300TD year 2000. RUSTY SOLD cost a fortune to maintain on the road but run well on WVO Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long? Third lasted a month then went away... Fourth now... Corroded too... |
#59
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Hi O, yes working perfectly so far.
__________________
-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#60
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This is funny, I now got 4 working MAF that I got from the scrappy that were working on and off, but it was due to an intercooler leak, if I knoew this ealier it would have save me a wee bit... I have a MAF factory now, not sure the state of them all tho...
Thank you Kartek. Once again the master is brilliant. I will try to put a resistor on my MAF see if there is any change in boost or what ever...? All the best. Olivier
__________________
E300TD year 2000. RUSTY SOLD cost a fortune to maintain on the road but run well on WVO Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long? Third lasted a month then went away... Fourth now... Corroded too... |
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