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Our 8/84-built 633's heating system will barely warm the car. The coolant level is correct. The blower blows like a hurricane. The heater control valve might be suspect EXCEPT that both heater core hoses are almost as warm as the rest of the coolant-carrying hoses. A bit more defroster warm air is e...

Thanks, Brucey. Some of what you suggested may be a bit above my "pay grade", but knowing about the stereo wiring being squashed into a small space with sharp edges gives me a starting point.

Jeff

Fuse 23 blows as soon as the parking lights are turned on in our 8/84-built 633. It controls the right front parking lamp and right rear tail lamp, instrument lamps, underhood lamp, license plate lamps and rear defogger. I have chased my fail for months trying to track this problem down, been all ov...

With both HVAC dials turned clockwise and the top and bottom HVAC levers slid to the right, our 8/84-built 633 won't blow hot air out of either the floor ducts or the defroster ducts. Strangely, I seem to get a tiny bit of heat to the floor with the center lever slid to the right. The heater blower ...

Might be, Ken. What is the best way to test for this?

Jeff

Every time I start out from a stop sign/light in our 5-speed '84 633 lately, I hear/feel a low rumble coming from somewhere beneath and behind me. I have replaced all of the rubber in the rear end (except the control arm bushings), and includes the diff mount. The driveshaft was rebuilt 2 - 3 years ...

Thanks, Brucey. I looked at that system more carefully yesterday and realized that the aluminum insert is exposed on two sides, not one as I originally thought . . . so it would indeed be hard to find a channel-run type of replacement.

Jeff

The aluminum inserts that conceal the drip rail's retaining screws rarely survive the removal process --- and their price is ridiculous (if you can even find them). So . . . Does an economical, readily available alternative exist? I would imagine that someone somewhere has identified a durable brigh...

baders, I tried the ones from Octane Lighting and they were horrible --- worse illumination than the stock Halogen sealed beams! On top of that, they blew my low-beam fuses. They looked exactly like the ones that you are considering from Powerful UK Ltd; instinctively, I would advise that you pass. ...

I need a good 633CSi owner's manual (U.S. version) to replace mine which is water-damaged. On the sixth page in (I think --- pages are loose) it reads: Order No. 01 419 760 947 2. edition VII/83 3.0 This is the manual with the nose of a 633 on the cover which appears to be dark brown in color. Does ...

I finally took the time to list this:
http://www.ebay.com/itm/231453914985?it ... 23&vxp=mtr

Yes, it really is as-described in the listing; feel free to ask questions about it here if you wish.

Jeff

Okay; thanks, six.

Jeff

six, Yes, it does; I forgot to mention this. No matter whether the low-beams are functioning at the moment or not, the "flash" feature always works and flashes all four lamps. It has been suggested elsewhere that the problem is the high-beam relay (have already substituted a known-good rel...

The low-beam headlamps on my 8/84-built 633 operate erratically. If they come on initially, they will often go out when I switch to high-beam. If I turn them off, they will not necessarily come back on. If I trigger the high/low-beam flash feature (dimmer switch lever pulled all the way toward drive...

I am seeking a known good Bosch 0-261-200-008 ECU which I can either buy cheaply or borrow to be certain that my ECU is indeed causing my 8/94-built 633's rich-running / poor running problem. It has gotten wet (along with the AFM) and, though I thoroughly dried these and several other components out...

Thanks to Rainer and tschultz for the info.

Jeff

Without major mods to any of the attachment points including manifolds . . . ?

Jeff

Brucey,

Does that include new wet lead-acid batteries such as mine? If so, it would explain why the 6-year battery in my 320i Baur recently died after only 3.5 years . . .

Jeff

Okay; thanks, Brucey.

Jeff

Brucey and Sharkfan,

"D light" . . ? What might I know this as?

Jeff

BTW there is no need to put up with weak instrument lighting; the brightness is adjustable anyway, and the bulbs can be upgraded if you want too. cheers Brucey, Does another instrument lamp adjustment exist besides the rotary rheostat in the headlamp switch? I of course have that maxed-out. I alrea...

Thanks, Jack and Brucey!

Brucey, the car has a fairly new lead-acid battery. What is the maximum alternator output voltage that I can run through this battery without causing it to gas? Or should I just leave the system alone until it is new battery time?

Jeff

I am tired of dim headlamps and instrument lamps in our '84 633. I know that someone makes adjustable and/or high output voltage regulators for Bosch alternators; where might I buy one to fit the 80A alternator in our car?

Jeff

Ralph,

Thanks for the tip about the magnetic screwdriver.

Jeff

When I try to "pry" it (with fingers only) over the de-knobbed release levers, it seems as if it might break before the slots get anywhere near clearing the levers. One of the release levers has a screw inside holding it to the frame which, when removed, allows the shell to move sideways ...