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p29f3 code - fuel pressure sensor fault
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12-09-2012, 11:40 AM | #45 |
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12-10-2012, 09:29 AM | #46 |
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Apparently the intake valves get so bad they create misfires. There's a local company I found that still does the walnut blast. Hopefully I can get mine done soon.
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12-10-2012, 08:43 PM | #47 |
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12-10-2012, 08:45 PM | #48 | |
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ths is such a great diy
I didn't need the special screwdriver, but otherwise great info. Quote:
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12-10-2012, 09:26 PM | #50 |
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12-10-2012, 10:36 PM | #51 |
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sorry, dont know what the *##$ i was talking about.
i replaced it with the newest number, like the 7 series one. the shadow code is still there. i may brake out the INPA to clear it. |
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12-12-2012, 07:26 PM | #53 |
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12-12-2012, 08:21 PM | #54 | |
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Quote:
Refer to this thread http://www.e90post.com/forums/showth...=724147&page=3 |
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12-13-2012, 12:38 AM | #55 |
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this happened to my car when I took it in for service. $80 for parts, $400 for labor. I wonder if this is the reason I get terrible gas mileage.
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12-13-2012, 01:05 AM | #56 |
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Weird....my dealer is telling me , i also researched, anything emissions related is warrantied for 8 yrs 80000 miles, dealership assured me i will not pay any out of pocket. I have the same code, car runs and starts fine, but fuel mileage sucks, this also flatlines my lfp logs, so i cannot log my lpfp. This error may keep lpfp operating at maximum, thus maybe affecting fuel mileage, but am scared.to dealer my car because i know my car will start all sorts of problems.after dealer gets ahold of my car lol...btw i have 08 e60, 30000 miles and 29f3 was there before my jb4 and before using e85...
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12-13-2012, 08:21 AM | #57 |
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12-13-2012, 09:52 AM | #58 |
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12-16-2012, 04:57 PM | #59 | |
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Quote:
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12-16-2012, 05:30 PM | #60 |
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WTF!!! Where is the LP sensor reading!! It would lead me to believe the wire is not installed back into the sensor or something is FUBAR!
Last edited by cn555ic; 12-16-2012 at 05:36 PM.. |
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12-21-2012, 04:33 PM | #62 |
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So I took it to these local guys that run a small bmw shop. They walnut blasted it for me, and changed the plugs. They said the plugs looked fine. They took before and after pictures of the intake valves and port, wow what a difference. The walnut blast and spark plugs got rid of the misfire, the car runs fan freaking tastic now.
so the sequence of events I experienced was: 1. p29f3 LPFP sensor failure, along with misfire, replaced LPFP sensor, still misfiring - it was the same cylinder creating the check engine light when misfiring. I had no long cranks, but i began getting idle misfires. The longer it got cold outside the worse my car ran. 2. walnut blasted and plugs changed. Car runs like a top. plugs didn't look too bad, intake valves and ports were caked pretty bad - car is at 37000 miles at this point. |
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05-08-2013, 09:44 AM | #63 |
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Wanted to say thanks for the info in this thread. I had the usual fuel pump code along with the low pressure sensor code 29F3 and am out of warranty. Cleared codes with INPA and 29F3 came right back. I tried to get INPA working to measure that sensor but no luck at all, going to keep working on that. I thought I would share some feedback on the replacement. In my opinion removing the cowl makes things easier and only takes a few additional minutes. I didn't remove it until I was putting things back together and made it easier to access that rear intake inlet but I was also installing a DCI. You don't need any special tools for the black box, just pull up and towards you from the drivers side. If necessary you can pry a small flat head into the clips to get it out but mine was no trouble. Also I left the wires on the sensor and just unclipped it from the black box, it was too hard to get to otherwise and didn't want to risk breaking it. Before putting things back together, it's a good time to clean the throttle body and oily chargepipe.
Code has not come back since, thanks again.
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05-13-2013, 08:00 AM | #64 | |
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06-06-2013, 11:57 PM | #65 |
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Just changed my sensor. Got rid of the p29f3 code but now i have the 2AAF code? Wtf....
Any thoughts? Did I mess install or was the p29f3 masking the 2AAF? |
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06-07-2013, 08:33 AM | #66 |
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Just got my sensor replaced recently. Is it safe to go back to using e85?
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