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#1
05-31-2010, 02:06 AM
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What the heck is causing this!?!??
Recently I had my transmission completely rebuilt and I thought for some reason that it was the cause of the gear getting stuck and causing this but it still is going on after the transmission rebuilt. Basically I accelerate up til around 20 MPH and then i let go of the GAS and the MPG gets stuck along with the RPM and then you feel like a hard down shift after a few seconds and then RPMs drop and so does the MPG and then the X continues to roll as if all is normal.... Could this be caused by the MAF? If so great because I just cleaned it using CRC MAF SENSOR CLEANER and to be honest I feel no difference. I am going to have it replaced soon and see what happens, other then the MAF is there any other sensor that could cause this? Update: Currently I have a code, that is not setting off the SES though, I just noticed this myself, 140 - Activation Map Cooling - Assuming its the thermostat I will look into it and have it changed as well now... errrrrrrr
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Some Of My Mods:     Some Of My Mods In Text: 1. Depo Headlights 2. Weathertech Window Guards 3. eBay/Sony Rear DVD Players 4. JVC NX7000 Navigation System NOTE: IF anyone likes these mods and needs some help with installing them on their X5s, please feel free to PM me, I am more then happy to help! Last edited by TheKingSim0n; 05-31-2010 at 10:09 AM. 
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#3
05-31-2010, 11:47 AM
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Is this happening while in sport mode only, or all the time? Also, have you tried "resetting" the transmission by putting the key in position 2 and holding down the gas pedal for like 30-40 seconds? I can't remember exactly at the moment, but this is what got rid of my transfail message after I removed the entire center console.
As for the MAF cleaner stuff, it's a waste of time. The wire inside the MAF works off resistance, and after a while, just like spark plugs, the resistance becomes too high. You simply need to replace it. I'm gonna open a whole can of worms here, but you can use a VW MAF sensor only for around $80 instead of replacing your entire MAF sensor and tube for like $200-$400. If you want, head over to www.m5board.com or the M5 forums on www.bimmerforums.com and search around for the part #. This doesn't work on the 3.0, and as far as I know it'll work on anything from the 4.4-4.8 since M5 guys have 4.9/5.0 engines.
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 650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's 325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex 600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's 135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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#4
05-31-2010, 11:08 PM
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Quote:
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2011 X5 M-sport
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#6
06-07-2010, 05:03 PM
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Well I am awaiting for the MAF to arrive and then ill reply on if it did the trick...
__________________
Some Of My Mods: Some Of My Mods In Text: 1. Depo Headlights 2. Weathertech Window Guards 3. eBay/Sony Rear DVD Players 4. JVC NX7000 Navigation System NOTE: IF anyone likes these mods and needs some help with installing them on their X5s, please feel free to PM me, I am more then happy to help!
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2001 X5 4.4i WHITE-Loaded like a baby's diaper SOLD
Linear Mode
