Maytag: The Alpine '87 529i

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tig
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Post by tig »

Instead of using the good brown connector for the CTS I decided to use it to replace the brown connector that was broken for the thermotime switch.

I removed the resistor.

Then I used barrel connectors with a nifty barrel connector tool my buddy let me to splice the wires. Shrink wrapped.

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Then I used friction tape to replace all the brittle/shattered sheathing in that area. Looks decent.

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This all was probably not needed, but I hated the ideas of those wires bouncing around in all that heat with no protection.
tig
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Post by tig »

She's starting to go back together now.

Got a new pintle tip at NAPA.

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Timing belt on. TDC marks double and triple checked. Pullys and belts on.

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- Fuel rail & injectors are installed
- Heater fan has been R&Rd
- Sensor wiring patched up and re-wrapped. Dialetric grease on all connectors

I've made quite a mess of the garage...

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I have an indoor soccer game tonight. If I don't get too beat up I may wrench some more after. But alas there's no way I'm getting everything done this weekend as I had hoped.

Here's what's left:

- Adjust valves
- Valve cover w/new gasket on
- Attach all hoses
- Finish putting front of motor together
- Radiator back in
- Since I'm not getting done today, I'll install the rebuild kit in the heater control valve instead of the temporary work around
- AFM, boot, etc.. back on
- Replace wheel bearing
- Replace dogbones
- Finish ripping out alarm
- Fix radio

Something like that.
tig
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Post by tig »

Never adjusted valves before, so I'm curious.

When valves go out of alignment, do the gaps ever get TIGHTER?

I ask, because as I'm doing it I've found a few where I had to open the adjuster up (could not get the feeler gauge in there at all) and a few where I've had to tighten it (and a few that were just right already).
shagrath
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Post by shagrath »

Very nice 528e! I will follow this thread closely.
John SCB
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Post by John SCB »

cek wrote:Never adjusted valves before, so I'm curious.

When valves go out of alignment, do the gaps ever get TIGHTER?

I ask, because as I'm doing it I've found a few where I had to open the adjuster up (could not get the feeler gauge in there at all) and a few where I've had to tighten it (and a few that were just right already).
I've seen plenty where they've been too loose or set just right, but never too tight. The previous person in there would have set them that way. I like to double check the all gaps before I close it up.
tig
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Post by tig »

John SCB wrote:
cek wrote:Never adjusted valves before, so I'm curious.

When valves go out of alignment, do the gaps ever get TIGHTER?

I ask, because as I'm doing it I've found a few where I had to open the adjuster up (could not get the feeler gauge in there at all) and a few where I've had to tighten it (and a few that were just right already).
I've seen plenty where they've been too loose or set just right, but never too tight. The previous person in there would have set them that way. I like to double check the all gaps before I close it up.
Thanks. Maybe 2/3 of them were tighter than they should be. I've now checked them twice and they are all good to go.
tig
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Post by tig »

Heater control valve.

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Not only is the filter full of gunk but diaphragm is torn.
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Like new.
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tig
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Post by tig »

She's all back together.

Started right up. While cold, idled a bit smoother than before.

Then... As soon as she got warn the surging idle was back. However, this time it drops down to almost a stall before racing back up. Previously it dropped down to about 750 rpm before surging each time.

I hadn't put in the 'new' ICM.

So I put it in. No change.

Whacked it, hard. No change.

Frak.

I'm at a loss.

Video of it doing it:
https://www.youtube.com/watch?v=aROpZs- ... e=youtu.be
Last edited by tig on Nov 25, 2013 8:01 PM, edited 1 time in total.
tig
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Post by tig »

Also, I have two bolts left over. I double checked everything and can't figure out what I missed.

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[edit]
Found out where they go

:banana:

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Last edited by tig on Mar 02, 2014 2:09 PM, edited 3 times in total.
waynet1
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Post by waynet1 »

Unplug the coolant temp sensor, see if there is a change as to when of if idle problem starts.
I'm assuming you removed the resistor as discussed earlier.
tig
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Post by tig »

waynet1 wrote:Unplug the coolant temp sensor, see if there is a change as to when of if idle problem starts.
I'm assuming you removed the resistor as discussed earlier.
Yes, I removed the resistor.

I swear I tried this before. I just tried it again, now I just get a high (way too high) solid idle.

Will a CTS from a M30B34 work, I have one lying around...
waynet1
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Post by waynet1 »

cek wrote:
waynet1 wrote:Unplug the coolant temp sensor, see if there is a change as to when of if idle problem starts.
I'm assuming you removed the resistor as discussed earlier.
Yes, I removed the resistor.

I swear I tried this before. I just tried it again, now I just get a high (way too high) solid idle.

Will a CTS from a M30B34 work, I have one lying around...
That, I can't answer. Sorry.

Only thing the resistor is doing is changing the value/temp that ECU sees. I think it was a very small one as well, only 5 ohms, if my color reading skills are correct.
Hopefully Chris will chime in with answers about AFM adjustment he referred to earlier.
tig
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Post by tig »

Let's review. Performed this weekend and today:
  • New timing belt
  • New water pump
  • Newish spark plugs (when I baselined Vlad, the plugs I pulled out were basically new; I used those).
  • Cleaned injectors
  • Soda blasted valve cover
  • New hoses
  • Cleaned up thermostat and ICV wiring
  • Cleaned throttle
  • R&R'd heater fan
  • R&R'd heater control valve (new solenoid kit)
  • Replaced headlamps
  • Tidied up engine bay with zip-ties etc...
Yet to do:
  • Fix surging idle (coolant temp sensor?)
  • Replace right front wheel bearing
  • Finish pulling alarm
  • Fix radio
  • Fix battery run down
  • Find a trunk carpet set
  • Fix head rests (in-op)
Just went for a nice little drive and she's running much better now. Still a little "diesel-ey" but smoother. Lovely car. I've definitely bonded.

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waynet1
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Post by waynet1 »

waynet1 wrote:
cek wrote:
waynet1 wrote:Unplug the coolant temp sensor, see if there is a change as to when of if idle problem starts.
I'm assuming you removed the resistor as discussed earlier.
Yes, I removed the resistor.

I swear I tried this before. I just tried it again, now I just get a high (way too high) solid idle.

Will a CTS from a M30B34 work, I have one lying around...
That, I can't answer. Sorry.

Only thing the resistor is doing is changing the value/temp that ECU sees. I think it was a very small one as well, only 5 ohms, if my color reading skills are correct.
Hopefully Chris will chime in with answers about AFM adjustment he referred to earlier.

Does it still hunt when you put in in gear or when you turn on A/C ?
tig
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Post by tig »

waynet1 wrote:
waynet1 wrote:
cek wrote:
waynet1 wrote:Unplug the coolant temp sensor, see if there is a change as to when of if idle problem starts.
I'm assuming you removed the resistor as discussed earlier.
Yes, I removed the resistor.

I swear I tried this before. I just tried it again, now I just get a high (way too high) solid idle.

Will a CTS from a M30B34 work, I have one lying around...
That, I can't answer. Sorry.

Only thing the resistor is doing is changing the value/temp that ECU sees. I think it was a very small one as well, only 5 ohms, if my color reading skills are correct.
Hopefully Chris will chime in with answers about AFM adjustment he referred to earlier.

Does it still hunt when you put in in gear or when you turn on A/C ?
No. When I put it in gear it drops down to a normal (~800 rpm) idle.

When I put the AC on (in idle) the's no change.
Kyle in NO
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Post by Kyle in NO »

Have you tried another ICV?
tig
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Post by tig »

Kyle in NO wrote:Have you tried another ICV?
No, don't have one.

i swapped in a cts from a m30.

no real change, but then I tried adjusting the screw on the icv...

JOY! At dinner now, she drove wonderfully here. Idles a bit high. But no surge! When I get a chance I'll turn the screw a bit...
tig
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Post by tig »

cek wrote:
Kyle in NO wrote:Have you tried another ICV?
No, don't have one.

i swapped in a cts from a m30.

no real change, but then I tried adjusting the screw on the icv...

JOY! At dinner now, she drove wonderfully here. Idles a bit high. But no surge! When I get a chance I'll turn the screw a bit...
Shit. When I pulled into garage after returning from dinner the surge is back. Blarg.
tig
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Post by tig »

I dug into ripping the alarm out and trying to fix the radio this morning.

The first challenge was figuring out how the automatic console came apart. Took me a minute to find the hex screw on the back of the shift handle...

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Interestingly several of the interior parts including the center console and the head/fog light switch piece have writing on them that indicate they were inventory at at junkyard (and from a 535). I guess the PO updated the interior at some point. They are all are in great shape. I was worried there might be stripped screws and stuff. The worst was the cig lighter plastic had broken free (and previously been epoxied). The first thing I did was clean it up and make some epoxy and get it setting.

The alarm wiring was not too bad. With a little tugging and prodding I quickly figured out where everything went. Since I may install a remote lock system I left a few key pieces in place but carefully capped the wires.

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The radio appears to have a short inside of it, associated with the dial. I had it working long enough to know that all 4 speakers work and sound fine. I will probably get an aftermarket unit with bluetooth given this.

In prep for that, and as practice for doing the same thing to Vlad, I ran red and green 12ga wire from the aux fuse box through the firewall to where the radio goes. This way I have both switched and unswitched power independent of the finicky 4, 5, and 12 fuses.

I hate the fact that the cig lighter in these cars is always-on. It's a recipe for disaster and can be a battery drain if something is left plugged in. So I branched off my new green 12ga wire (switched), snipped the red/yellow cig lighter lead, and spliced in my new wire. Now my cig lighter is switched and on the aux fusebox.

I still have the drivers' kick panel off because I need to fix the fact that my seatbelt chime is constantly going (I think I screwed up a wire to that module).

The hole on the firewall behind the brake pedal is open. That is, I can see light through to the engine bay. It's like a 1.5" diameter hole. This explains why the starter is so damn loud when the car is starting. Is there supposed to be a plug there, or some sort of mat?
tig
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Post by tig »

Aforementioned unplugged hole behind brake pedal into engine compartment.

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I don't see where in RealOEM plugs for this might be...
tig
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Post by tig »

Always clean things before they go back in the car; even a $2000 beater...

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waynet1
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Post by waynet1 »

cek wrote:Aforementioned unplugged hole behind brake pedal into engine compartment.


I don't see where in RealOEM plugs for this might be...
Here.

http://realoem.com/bmw/partgrp.do?model ... g=51&fg=80
tig
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Post by tig »

waynet1 wrote:
cek wrote:Aforementioned unplugged hole behind brake pedal into engine compartment.


I don't see where in RealOEM plugs for this might be...
Here.

http://realoem.com/bmw/partgrp.do?model ... g=51&fg=80
Thanks!
tig
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Post by tig »

What the dickens is this contraption? I don't recall seeing this on Vlad.
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Another job done! :banana: New dog bones installed. That was surprisingly easy. Took 15 minutes.

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Didn't have a good pic of the diff before. Took some.
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tig
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Post by tig »

Well, here's a sucky conundrum.

Everytime I've driven the car since putting everything back together again, I've gotten 'low coolant'. Sure enough the overflow tank was low/empty.

The first 2 times I figured I had air in the system and it was just working its way out.

Then I got nervous.

There was no sign of a coolant leak; at least initially. I'm not blowing white smoke. It seemed like I had a slightly worse oil leak at the back of the engine than before, but no biggie.

Then I noticed that oil at the back of the engine was coolant, not oil.

Turns out when I re-installed the hoses on the heater control valve, the ends gave up the ghost and are now leaking. At higher RPM it squirts out, which explains why there was so little at idle/in the driveway. Maybe I tightened the clamps down too much?

The right thing to do is to replace the hoses that connect to the heater control valve. That looks like a bitch job. One goes to the back of the block! The other to the bottom connector for the heater core.

Suggestions for approaching this? How the hell do you reach the hose connection at the back of the engine?!?!?
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