"M54B30" (m54b30)
07/30/2016 at 16:39 • Filed to: None
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19|
"M54B30" (m54b30)
07/30/2016 at 16:39 • Filed to: None | 0
| 19 |
Need your collective wisdom for car repair help. My 530i took a crap on me this morning.
Background: I’m supposed to be driving it 1800 miles to North Carolina this week. Took it to do an oil change today and put summer tires back on (yeah I’m late). I had an idiot moment and ran the car approx 20 seconds with the oil filter (and cap) off while repositioning it to lift better. I’d say about a quart and a half leaked out. The car drove perfect yesterday.
Oil change gets done without issue. Drive it to a car wash (1.5 miles) to get the oil cleaned out from underneath. There was some squeaking that I assumed was oil that had gone from the filter housing to the belt when I ran it open. I let the sprayers rinse under the engine for a while (20 seconds?). I park it and the brake pedal gets super firm. It did this last time a few weeks ago too. I accidentally hit the gas pedal while parked inside the car wash. I don’t know if any water got sucked into the exhaust but I doubt that would be my issue.
Go to pull out and it stalls. Several restart attempts and I can get it running long enough to get out of the wash rack. It sounds terrible - like there’s no oil in the engine. I figure I had one idiot moment, better make sure there’s oil in it. There is, it’s full.
Let it sit a few minutes and restart it long enough to limp to a parking space 30 feet away. It stalls halfway.
It sounds like a combination of:
No fuel being injected (just keep trying to turn over without success) and when/if running, not getting above 200 RPMs or so and;
No oil - that horrible knocking noise.
It drove to the car wash just fine. Not finding much help on forums and all the repair shops are closed for the weekend. I’ve attached a video, turn the volume up for the second half of it to hear the knocking.
Any ideas?
PS: details: M54B30 engine, 177k miles, no issues before
My X-type is too a real Jaguar
> M54B30
07/30/2016 at 16:58 |
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Sounds like it is running down on cylinders. More than likely bad coil packs or the computer is toast. As for the brakes does yours have the electric e-brake? I think your wash job caused some issues if you’re lucky letting it dry out will fix most of the issues.
If oil got into the coil packs they are done.
Jayvincent
> M54B30
07/30/2016 at 17:00 |
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my guess: wires are wet from car wash spray. Hopefully it dries out and starts/runs fine. You could try “wire dry” spray, but I’ve never had any success with it.
xsnowpig
> M54B30
07/30/2016 at 17:03 |
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water killed a sensor in the engine bay washing the oil off? water spray loosened a sensor wire?
one of my previous idiot moments was driving my Subie 2 miles of interstate to the next exit with a CEL light which ended up being low oil. didn’t start the rod knock until a few hundred miles later, and that knock was only at 2500-3000rpm and idled fine.
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M54B30
> My X-type is too a real Jaguar
07/30/2016 at 17:06 |
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Manual ebrake. Coil packs sound pricey which kind of sucks.... :(
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M54B30
> xsnowpig
07/30/2016 at 17:08 |
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I wonder if maybe the oil pressure sensor got a little loose, but I don’t know of that would cause such a knock
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M54B30
> Jayvincent
07/30/2016 at 17:08 |
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:( uggggggh
Thanks, that’s what I’m hoping too
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My X-type is too a real Jaguar
> M54B30
07/30/2016 at 17:08 |
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Haven't had to buy coil packs for my 535 they ran about $150 each for my Jag.
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M54B30
> My X-type is too a real Jaguar
07/30/2016 at 17:09 |
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Hmm that’s on the lower end of repairs then. Surprising.
gmctavish needs more space
> M54B30
07/30/2016 at 17:19 |
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the M54 uses the same coils as M52s and I believe M50s, they aren’t expensive
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gmctavish needs more space
> M54B30
07/30/2016 at 17:22 |
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It sounds like it’s trying to run one 1, maybe 2 cylinders. I would guess others are right, and the coils/wires/computer are angry from the car wash. Pull sensor plugs and wires and coils and see if anything is moist?
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M54B30
> gmctavish needs more space
07/30/2016 at 17:29 |
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This sounds too easy, no way it’s the fix I need.
To fix mine, I probably have to source a sensor chiseled from Uranium only found in the foothills of Munich buuuut the only guy that did that job died unexpectedly last week sooooo.....
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gmctavish needs more space
> M54B30
07/30/2016 at 17:33 |
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My friends bought an E46 330Ci that was running rough for really cheap, we pulled coils until we found the one that made no difference, and replaced it with a spare from my other friends E36, and it ran perfectly. So sometimes it can be that easy. Sometimes...
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M54B30
> gmctavish needs more space
07/30/2016 at 17:34 |
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I do a lot of my own repairs, never messed with this stuff. I’m going to check it out again in a few mins, it’s been sitting outside for about 3 hours and see if there’s any change
Dr. Zoidberg - RIP Oppo
> gmctavish needs more space
07/30/2016 at 17:41 |
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By sometimes you mean NEVER FOR YOU SPECIFICALLY
RallyWrench
> M54B30
07/30/2016 at 18:00 |
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That does not sound promising. The wash only rinsed from underneath? While running? If somehow it got water in the spark plug bores it can short the coils, or if the cam and crank sensor connectors under the intake got wet it could cause some problems, but they’re weather sealed. If it somehow ingested water through the air box pickup at the left front you could have bigger problems. The brake pedal is likely hard because there’s not enough engine vacuum to provide assist in this state, it’s fed right from the intake manifold. 20 seconds with low or no oil pressure is an eternity, that worries me too. These are tough engines, but they won’t take pressure loss well.
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gmctavish needs more space
> Dr. Zoidberg - RIP Oppo
07/30/2016 at 18:01 |
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If he has my luck, it won’t be that easy for him. Hopefully he has my friends luck
E92M3
> M54B30
07/30/2016 at 23:34 |
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Doesn’t sound like rod knock to me. Sounds like it’s running on half the cylinders. Coil or fuel injector connections may have got wet. Let it dry out, and try it again.
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M54B30
> E92M3
07/31/2016 at 00:17 |
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Its sitting at the shop now, I’ll try it tomorrow. They don’t open until Monday anyways so it can dry out there for a bit without my meddling
Nauraushaun
> M54B30
07/31/2016 at 01:48 |
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I’ve recently recovered from some bad knocking, it doesn’t sound like that. But you’re in the deadened interior of a BMW and I was in my MR2 with the engine next to my ear.