Search found 295 matches

by RossDinan6
Tue Feb 27, 2024 10:28 pm
Forum: Engine - Mechanical - Electrical
Topic: Injectors 4,5, and 6 not working, euro E12-based 1981 635CSI with Motronic (late 1981-82)
Replies: 6
Views: 373

Re: Injectors 4,5, and 6 not working, euro E12-based 1981 635CSI with Motronic (late 1981-82)

Well, on an '84 injectors 4-6 are grounded by the ECU at pin 15 using the Brown/yellow tracer wire with a splice presumably nearby in the injector harness. My guess either the ECU or the wire. Actually the splice or ECU connector, rarely does a wire go bad. This assumes your car is similar enough to...
by RossDinan6
Sun Feb 25, 2024 10:22 pm
Forum: The Saloon
Topic: What did you do to your E24 today?
Replies: 1057
Views: 464223

Re: What did you do to your E24 today?

Washed of yesterday's road grime. It was still damp early yesterday on the drive to Sebring. A small cold front passed overnight leaving very nice weather all day. Met up with a couple friends for the drive. Attended the SVRA vintage, GT America and Trans Am races. There is a large car show there as...
by RossDinan6
Wed Feb 21, 2024 10:26 pm
Forum: Cars and Parts wanted
Topic: WTB Instrument Cluster housing for 88 M6
Replies: 4
Views: 483

Re: WTB Instrument Cluster housing for 88 M6

Sent an email to move this off forum.
by RossDinan6
Tue Feb 20, 2024 11:09 pm
Forum: Interior
Topic: Heater blower transistor failure mystery...
Replies: 40
Views: 18784

Re: Heater blower transistor failure mystery...

Air conditioning? What is this sorcery of which you speak? (Mine has never worked in either E24....that's why they get little use during the summer) . I got a cool sorcerer's hat and wand from ebay and made mine work. In Florida. In August. All it takes is time, patience, and of course money. It is...
by RossDinan6
Tue Feb 20, 2024 12:38 am
Forum: Cars and Parts wanted
Topic: WTB Instrument Cluster housing for 88 M6
Replies: 4
Views: 483

Re: WTB Instrument Cluster housing for 88 M6

I'll try to pull it out tomorrow and confirm condition. There are no cracks. The difference between the failed glue joint on both your housing and my cover may make it interesting to get a nice clean new joint interesting. Hopefully the joint will not be too visible. I can tell, for example, where t...
by RossDinan6
Wed Feb 14, 2024 2:06 am
Forum: Cars and Parts wanted
Topic: WTB Instrument Cluster housing for 88 M6
Replies: 4
Views: 483

Re: WTB Instrument Cluster housing for 88 M6

I have a parts cluster with a loose lens. I believe it is in decent shape. I want the cluster, but may part with the lens. I'll pull it out and check the condition.
by RossDinan6
Wed Feb 14, 2024 2:02 am
Forum: Engine - Mechanical - Electrical
Topic: Indicators, RH side fine, Left works, then doesn't then work ...
Replies: 9
Views: 864

Re: Indicators, RH side fine, Left works, then doesn't then work ...

I'd think connections. Somewhere. The key is which somewhere. As I posted in the "What did you do to your E24 today" thread: https://bigcoupe.com/phpBB2/viewtopic.php?p=240174#p240174 . A good connection cleaning is probably in order. It fixed my wonky speedometer and instrument cluster is...
by RossDinan6
Sun Feb 11, 2024 2:37 am
Forum: The Saloon
Topic: What did you do to your E24 today?
Replies: 1057
Views: 464223

Re: What did you do to your E24 today?

Today I drove it, but that is not the point of posting, is it? Recently I decided it time to address the wonky speedometer. It would sometimes be honest and at others bounce about randomly, display ludicrous speeds or just peg the meter. Driving in my neighborhood looking at a 130 MPH speed was ente...
by RossDinan6
Fri Feb 09, 2024 10:16 pm
Forum: Exterior
Topic: Wiper Arm Guard Screw
Replies: 10
Views: 808

Re: Wiper Arm Guard Screw

My '84 has it, riveted on to the arm. I always assumed it was there to add pressure to the blade at speed.
by RossDinan6
Fri Feb 09, 2024 10:12 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 1179
Views: 452889

Re: 1984 633CSi Rises again!

It probably won't mean anything to your exhaust leak. I repeatedly had to repair a leak where my turbo down pipe met the exhaust. It is a flat round four bolt flange. Tired of making the repairs I decided to fix it once and for all. First I cut a new gasket out of soft copper plate. Then sealed it o...
by RossDinan6
Thu Feb 01, 2024 11:46 pm
Forum: Interior
Topic: Moving Power Seats on the Work Bench for Cleaning/Maint
Replies: 5
Views: 508

Re: Moving Power Seats on the Work Bench for Cleaning/Maint

The buttons work in conjunction with the seat controller. They wouldn't be necessary to use either to run the seat motors on the bench. The motors are permanent magnet which means by reversing the polarity the motor changes direction. Page 159 of my '84 model ETM, attached, shows the motor wire colo...
by RossDinan6
Wed Jan 31, 2024 11:02 pm
Forum: The Workshop
Topic: 1970's Cars
Replies: 12
Views: 1245

Re: 1970's Cars

I'm curious about early car brakes as I have zero experience with them. Can the E12 based cars upgrade brakes from the BMW parts bin? I did the 5 series front/7 series rear with an E32 master years ago on my '84 (non ABS BTW). Is something like this possible?
by RossDinan6
Tue Jan 30, 2024 10:25 pm
Forum: The Workshop
Topic: 1970's Cars
Replies: 12
Views: 1245

Re: 1970's Cars

That second car doesn't look like a Euro. Looks like US bumpers to me.
by RossDinan6
Sun Jan 28, 2024 9:46 pm
Forum: Interior
Topic: Odometer Gears
Replies: 8
Views: 1515

Re: Odometer Gears

"When all else fails get a bigger hammer" Or in this case larger dykes. The bushing is pretty brittle but still tougher than the light duty dykes I started with.
by RossDinan6
Sun Jan 28, 2024 9:41 pm
Forum: Interior
Topic: Odometer Gears
Replies: 8
Views: 1515

Re: Odometer Gears

I just reassembled my cluster after a contact cleaning to hopefully clear up a wonky bouncing and pegging speedometer. I removed it again when I drove it and had on odometer. I guess I have been on borrowed time for quite a while. Opened up the speedometer and sure enough the motor gear was in three...
by RossDinan6
Thu Jan 25, 2024 2:03 am
Forum: Suspension - Steering - Brakes
Topic: Power steering pump misbehavior
Replies: 15
Views: 1262

Re: Power steering pump misbehavior

Pump cavitation is caused by a restriction not allowing sufficient fluid flow into the pump. I didn't see mention of the filter condition, nor of the condition of the suction hose. When a pump cavitates it pulls a vacuum that can vaporize a fluid causing bubbles. When the pressure changes and the va...
by RossDinan6
Thu Jan 18, 2024 7:39 pm
Forum: Engine - Mechanical - Electrical
Topic: Indicators, RH side fine, Left works, then doesn't then work ...
Replies: 9
Views: 864

Re: Indicators, RH side fine, Left works, then doesn't then work ...

Well, typically electrical issues don't fix themselves. Maybe you got lucky. I did once.
by RossDinan6
Sat Jan 06, 2024 10:21 pm
Forum: Engine - Mechanical - Electrical
Topic: Indicators, RH side fine, Left works, then doesn't then work ...
Replies: 9
Views: 864

Re: Indicators, RH side fine, Left works, then doesn't then work ...

Well, I had a detailed post written without being logged in. Lost it all in the process. Doh. I am looking at my ETM for an '84 US model, relevant page attached. There look to me to be a limited number of places to cause the problem. The high rate of flash I assume is when the lamps are dead. Most f...
by RossDinan6
Fri Jan 05, 2024 11:01 pm
Forum: Engine - Mechanical - Electrical
Topic: Indicators, RH side fine, Left works, then doesn't then work ...
Replies: 9
Views: 864

Re: Indicators, RH side fine, Left works, then doesn't then work ...

Intermittent electrical, my favorite. Is there a sarcasm emoji? Do you have an ETM? It is a necessity for troubleshooting. It sounds like connection issues somewhere. Bad grounds can do all kinds of wonky things. Also lamp sockets could be loosening up over time. I'll try to remember to look at the ...
by RossDinan6
Mon Dec 04, 2023 10:32 pm
Forum: Engine - Mechanical - Electrical
Topic: remove ac belt and unit question
Replies: 5
Views: 699

Re: remove ac belt and unit question

Understand. Mine was marginal for quite some time. It really is necessary here in FL so mine got a serious update last year. Happy I did. A bit of advice, get some real caps for the lines to the evaporator. It will minimize contamination. You will thank your self should you decide to make it functio...
by RossDinan6
Sun Dec 03, 2023 11:35 pm
Forum: Engine - Mechanical - Electrical
Topic: remove ac belt and unit question
Replies: 5
Views: 699

Re: remove ac belt and unit question

Sure, the AC compressor can be removed. All the AC components can come out as a matter of fact. There is no connection between heat and AC. Curious why?
by RossDinan6
Thu Nov 23, 2023 9:40 pm
Forum: Engine - Mechanical - Electrical
Topic: Full Throttle Hesitation
Replies: 4
Views: 881

Re: Full Throttle Hesitation

Maybe, but wouldn't a vacuum leak show up as a rolling idle due to unmetered air?

That is my recollection. Could be wrong as my Motronic has been gone for a long time.
by RossDinan6
Thu Nov 23, 2023 2:46 pm
Forum: Engine - Mechanical - Electrical
Topic: Ethanol-proof injector seals?
Replies: 4
Views: 806

Re: Ethanol-proof injector seals?

My injector O-Rings appear to be 13 64 1 730 767, 7.52 x 3.53 mm.

Strangely when I went to check the size on a different computer this morning I could not get to the same page. Using my VIN or entering the info did not bring up the page I linked last night. No parts fit my car I was told. Odd.
by RossDinan6
Thu Nov 23, 2023 1:09 am
Forum: Engine - Mechanical - Electrical
Topic: Ethanol-proof injector seals?
Replies: 4
Views: 806

Re: Ethanol-proof injector seals?

Realoem.com lists two sizes shown here, item 7: https://www.realoem.com/bmw/enUS/showparts?id=5274-USA-11-1983-E24-BMW-633CSi&diagId=13_0231 . Quantity shows as seven, six injectors and one for the pressure regulator. One is listed as ended but the dimensions are there for both. They are pretty ...
by RossDinan6
Wed Nov 22, 2023 2:03 am
Forum: My Project
Topic: My second project: 83' 635CSi
Replies: 5
Views: 924

Re: My second project: 83' 635CSi

Do download the ETM posted earlier. There is no guessing with electrical repairs. Also, clean up the grounds as also mentioned above. Even if not an issue it is worth the effort to eliminate the possibility. It sounds, by your list, that you have some instrument cluster issues. Since you expressed c...