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#61
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It dropped 10-15 psi in an hour that's too fast and was zero overnight. Did you do an extended power off test? There is a tiny o-ring between FPR and fuel filter that fails and will cause pressure problems. But if the filter is 150,000 miles old even though they can last half a million they aren't that expensive I bought a new one and it solved the problem.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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#62
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since the pressure test was flawed, I need to repeat it
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2) On the first test, the needle stayed at 42psi for 10 minutes prior to me coming inside to post my results, and was still there about 30 minutes later after returning outside (possibly 50 minutes, total). On the next test cycle, when I got the strange low pressure results, I presume that the dissolved O-ring had kept true pressures from being measured, and also was leaking pressure at the Schrader, so leak-down rate wasn't true either. On the third test, after trying the fouled hose w/o the O-ring, it couldn't hold pressure much at all. On the final test, using another/original fitting and lots of tape, I saw 49psi with the engine running, 42 just on prime, but it leaked quickly at the Schrader, but it confirmed the first test results:
3) Any extended power-off test (beyond the successful 50 minute test already done) will have to wait until I repair the new hose/adapter that failed me (via a new O-ring, and removing pieces of it that are clogging the hose). Meanwhile, I'm texting the PO again, to try and get more specific answers concerning the FPR he presumedly replaced, and/or lifting the X5, removing the shield underneath, and looking for myself. But that'll have to wait, as the wife's out-of-town, and I may need her help to crawl out from under there. I told you guys I was old and broken, didn't I?
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#63
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it truly is a project car, oh joy
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Another response, he thinks the filter is the original from 2001; the first owner was a cheapskate (and used it to go to drilling sites, so he just barely maintained it), and only replaced the minimum required, according to my friend, who talked with him a lot after their transaction. My friend, who bought it to swap to me, just tried to get it running OK, at first, then redid the only bad items: cooling & suspension, and then only did the Vanos and timing chain/guides at my persistent requests, just before our car swap. The non-Android, non-BMW radio swap he did was to put a cheap radio in, to replace the broken/missing equipment, sorta as an afterthought. I think I'll get a complete Mahle unit, when I can.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#64
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new plan of action, after six months of lean codes
Since my fuel pressure test fitting O-ring broke apart, I only have the inconclusive test results to go by: running pressure at 49psi (should be 51psi +/- 2.9psi, or so I read) so mine is within those limits). I saw 42psi priming pressure, which held for quite awhile before the O-ring came apart, which might be a bit low, but I've never had any trouble starting instantly, with no hesitation even at WOT. I'm moving the fuel filter & regulator to the back of my list, for awhile.
My extensive vacuum leak search (multiple times visually, with smoke and carb cleaner, too) came to naught, but I'm going to take apart all the post-MAF hoses & ducting to test off the car, using a vacuum pump and a magnifying glass, up close. I will also remove (and clean it out, this time) the ICV, which I just rattled last time. I never examined the ICV-to-manifold boot, so it comes off also. I'll also use the vacuum pump to test the line going to the FPR, prior to removal, while the engine is running. I'm considering getting a cheap MAF first, for testing purposes & possible replacement of my Siemens MAF, which I and others think may be under-reporting airflow to the DME. Xchemist says he bought a $20 MAF that solved his problem, and is still using it. Perhaps he'll tell me where I could get one from the same source he did, so it won't be a crapshoot getting a decent one (for cheap), to compare to my "already cleaned" OEM MAF. P.S. almost as an afterthought: I never actually removed the cowl, to go "hands & eyes-on" with the vacuum lines & fittings back there. I trusted the smoke to be visible, and/or the copious amounts of carb cleaner I sprayed behind the engine (using a long, flexible tube) to reveal any leaks back there. I was hesitant to remove the cowl, since it opens-up the innards of the HVAC to insects & other critters that may seek entrance if I can't reseal it immediately. I've had problems with insects (including scorpions), rodents (field mice, rats, & squirrels), and feral cats (especially kittens) trying to make my vehicles their home, so it's a real concern in my semi-rural wooded area. Did I mention snakes, too?
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide Last edited by workingonit; 05-16-2022 at 12:37 PM. |
#65
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Replacement MAF sensor. Due to inflation, it's $22!
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'06 X5 3.0i - bought @143,123 miles (12/26/20) |
#66
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ordered it
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Out of stock, and not even listed on the "mostplus" parts website, but I found it on Amazon for $23.58, and ordered it immediately. Even if it doesn't solve my lean code problem, it can serve as a so-far-reliable (as it has been for you) back-up for mine. At least it'll eliminate the MAF as the problem, I hope.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#67
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received the $23 MAF; it works, and might give me the answer
I described my first two tests of the new MAF I got in the mail today in this post on another thread: https://xoutpost.com/1220730-post15097.html
I hope the fuel trims correct themselves, due to the new MAF sensor, possibly working better and reporting airflow more accurately than my OEM sensor does. I can always hope for a miracle!
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#68
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I've been searching for other ways to reset the fuel trims to zero, but only found that high-end scan tools (like Snap-On Modis) actually have a feature called "Fuel Trim Reset", whereas my Foxwell just has "reset all adaptations", which andrewwynn says will work for him, but when I tried it on the old MAF, it didn't work for me. Might've been operator error. I'll try it again, but then I'll do the "unplugging-while-running reset" that worked for me before, followed by short drives over a period of days, just to let the new MAF find its' place. The wife tries to keep me from driving the X5 much, and she quotes me the price of premium fuel as I leave the house, urging me to drive the HHR Panel (much better mpg, at less fuel cost) instead. Or, to avoid that, I might have to wait 'til Monday, when she's gone for awhile. Hard to fix a problem without starting/running/driving the vehicle. Sheesh, what a b_t_h.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#69
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I have been running several M54 engines (E53, E39, E46) with regular 87 octane since 2003 with no issues.
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#70
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I'll try 89 octane mid-grade, first
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Neither engine liked 87 octane, and the 327 would get 100+ octane gas for racing, and ran OK just piddling around on slow street useage at 89 octane, but preferred premium (with additives). I switched to 427's (the first with 12:1 comp., the second with 14.25:1 compression), and went full-on racing with it after 5 years/ 5000 miles. Meanwhile, after I put the 358 engine in the truck, it showed that the daily commute of 120+ miles required 89 octane, and I mixed that with premium on hot-weather long tows to races (towing the Chevelle' trailer). But, the X5 does have sensors to detect problems, and can take out timing to suppress them, so it'd probably work for me, on my 3.0i X5, even being of reasonably high compression. It's worth a try.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
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