The Random E46/ZHP Question Thread

[ZHPizza]

FCP just posted this on why tires lose pressure. I didn't know it was normal for tires to lose one lb per month in constant temp weather.

https://blog.fcpeuro.com/why-your-ti...sing-pressure?

#TMYK

Yup, rubber isn't perfectly air tight so there will always be a few oxygen molecules sneaking through with time.

[stephenkirsh]

More headlight fun. I completely took apart the assembly and redid the wiring.

Now installed, the passenger side won’t go up as high as it used to. I’ve taken off and rechecked assembly of both the headlight assembly and the way it was mounted to the car.

Here’s a photo of each side, with both maxed out as high up they’ll point.

I’m not really sure what else to check. Is it possible to manually adjust the motor that adjusts the vertical aim? Maybe I moved it whole reassembling.



iPhone shadow on driver side.

[John in VA]

More headlight fun. I completely took apart the assembly and redid the wiring.
Now installed, the passenger side won’t go up as high as it used to. I’ve taken off and rechecked assembly of both the headlight assembly and the way it was mounted to the car.
Here’s a photo of each side, with both maxed out as high up they’ll point.
I’m not really sure what else to check. Is it possible to manually adjust the motor that adjusts the vertical aim? Maybe I moved it whole reassembling.

Did you inadvertently disconnect/break the plastic rod thingie (under the car) that raises the light?

[stephenkirsh]

This is a halogen car. It doesn’t have that and those aren’t a part of the equation. It’s 100% limited to the headlight assembly and the internals.

[nextelbuddy]

This is a halogen car. It doesn’t have that and those aren’t a part of the equation. It’s 100% limited to the headlight assembly and the internals.

did you make sure the actual headlight housings are mounted the same on both sides? that one of your housings isnt doing that weird thing where it did not slide into the mounting bracket on the core support properly? if the actual housing is off even a little, then that will throw your adjustment knobs off also and not match evenly between both sides.

[3ZHP]

A PM question!

Anyone had a fuel pump of fuel filter failure that left you stranded?

I’m at about 175K with the originals and may want to take a long road trip this summer. I’m thinking this may be a good time to at least replace the filter before the drive but, don’t know the expected life on the fuel pump!


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[ZHPizza]

A PM question!

Anyone had a fuel pump of fuel filter failure that left you stranded?

I’m at about 175K with the originals and may want to take a long road trip this summer. I’m thinking this may be a good time to at least replace the filter before the drive but, don’t know the expected life on the fuel pump!


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The fuel pump is one of those that could last anywhere from 50k to 300k. Mine thankfully started soft failing with a little stutter while holding a steady rpm on the highway, so I swapped it out and added the M3 fuel tank baffle at the same time.

I bought a backup fuel pump to keep in the trunk of the wife's car on trips as the swap can be done in a parking lot, which is where they're known to leave you when they decide to check out.

[az3579]

A PM question!

Anyone had a fuel pump of fuel filter failure that left you stranded?

I’m at about 175K with the originals and may want to take a long road trip this summer. I’m thinking this may be a good time to at least replace the filter before the drive but, don’t know the expected life on the fuel pump!


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I've had a fuel pump quit on me once while on the way to somewhere. But, I have "the force" and had a feeling I should order one and keep it in the trunk just in case, considering I had 192k miles on the car at the time. Sure enough, it quit on me. Pulled into a rest stop, had a friend pick me up to go to my event, and replaced the pump on site when on the way home.

Fuel filters probably won't leave you stranded, but it may cause some driveability issues or CELs.



If you haven't replaced your fuel pump yet at this mileage, then I would recommend you buy one and at least keep it in the car. You can replace it roadside with basic tools. Also buy the gasket as well.

[3ZHP]

I've had a fuel pump quit on me once while on the way to somewhere. But, I have "the force" and had a feeling I should order one and keep it in the trunk just in case, considering I had 192k miles on the car at the time. Sure enough, it quit on me. Pulled into a rest stop, had a friend pick me up to go to my event, and replaced the pump on site when on the way home.

Fuel filters probably won't leave you stranded, but it may cause some driveability issues or CELs.



If you haven't replaced your fuel pump yet at this mileage, then I would recommend you buy one and at least keep it in the car. You can replace it roadside with basic tools. Also buy the gasket as well.

Thanks!


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[ELCID86]

I’d go ahead and do it. But BP’s suggestion is a close second.