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by songzunhuang
Tue Mar 31, 2020 4:59 pm
Forum: Engine - Mechanical - Electrical
Topic: Rough Idle and Power Steering Pump - connected?
Replies: 4
Views: 513

Re: Rough Idle and Power Steering Pump - connected?

Song, I just finished working on my car and noticed the hose from the intake to the ICV was split near the ICV and was causing my newly erratic idle. Can you tell us what repairs you made to your PS system? My 1986 is leaky so I plan to rebuild the pump and possibly replace all the low pressure hos...
by songzunhuang
Sun Mar 29, 2020 8:26 pm
Forum: My Project
Topic: 1984 633i: Saved from the barn
Replies: 23
Views: 1332

Extra relay - me too!

I recently came across the extra rectangular unmarked relay mounted on the outside of my fuse box. I have the same year car as you, so maybe they are similar. If you look at my thread, I removed a sensor linked to the AFM on the advice of my mechanic. So far things seem ok, except my car idles a bit...
by songzunhuang
Sat Mar 28, 2020 10:51 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

Re: 1984 633CSi Rises again!

Song, Is it possible to overhaul the p/s pump without removing the pump body from the car? It would be extremely difficult. One of the things you have to do is to replace the shaft seal. The whole front portion would have to be removed while the rear portion was in place. That shaft is held in plac...
by songzunhuang
Sat Mar 28, 2020 10:35 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

Adding and Removing Wires

So it's time to install my pricey wire and then also time to take out the excess wire that my mechanic has told me is unnecessary. I'm hoping that someone can educate me on the function of the harness and maybe I can remove even more than I did. Pricey Alternator Strap: First, let's add my pricey al...
by songzunhuang
Sat Mar 28, 2020 3:18 am
Forum: My Project
Topic: 1983 Bmw 635Csi E24
Replies: 20
Views: 1093

Re: 1983 Bmw 635Csi E24

hornhospital wrote:
Wed Jan 29, 2020 9:48 pm
All I can say is WOW. :shock: :o
:shock:
by songzunhuang
Fri Mar 27, 2020 4:25 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

Re: 1984 633CSi Rises again!

You could have made your own for a fraction of that cost, of course, but then it wouldn't be "genuine" :-? Nice to see that you're back at it, Song, guess since you're stuck at home :roll: BTW, moved to Gilroy a few weeks ago, still unpacking and getting things sorted :-" I've been spending much of...
by songzunhuang
Fri Mar 27, 2020 3:52 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

Re: 1984 633CSi Rises again!

If you must have genuine BMW parts, it can be eye-wateringly expensive. Of course, you can get the same wire minus the BMW logo for about $8. Just sayin... :-" Ken I have inspected this wire very closely, It is very well made. The solder joints are solid and the insulation intact. But there is not ...
by songzunhuang
Fri Mar 27, 2020 3:00 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

A Very Pricey Piece of Wire

So during the last weeks when I was tending to my car, I noticed that the wire that goes from the alternator to the engine block was very old. In fact, it seemed that most of the insulation had cracked off. BadWire.png Now, theoretically, this is a ground wire. As long as the material is conductive,...
by songzunhuang
Wed Mar 25, 2020 10:00 pm
Forum: My Project
Topic: Poor old '81 635... can we rebuild her???
Replies: 83
Views: 9416

Re: Poor old '81 635... can we rebuild her???

hornhospital wrote:
Sat Mar 21, 2020 10:27 pm
Good grief. #-o
Wow, that's ridiculous.
I'm grateful that my car appears to have escape most of the rust worm maladies.
by songzunhuang
Wed Mar 25, 2020 9:51 pm
Forum: Engine - Mechanical - Electrical
Topic: Non-Essential Emission Sensor?
Replies: 6
Views: 307

Re: Non-Essential Emission Sensor?

Yep. Trace them out and see where they go. I can't think of any "sensor" that would need to go between MAF and the computer. I did a bit of tracing during a sunny break in the weather. So those plugs go under the intake manifold and re-emerge by the fusebox. They looked wired into a rectangular rel...
by songzunhuang
Mon Mar 23, 2020 12:29 am
Forum: Engine - Mechanical - Electrical
Topic: Non-Essential Emission Sensor?
Replies: 6
Views: 307

Re: Non-Essential Emission Sensor?

Song I'm trying to imagine what sort of "sensor" would go in between the MAF and Motronic ? Are you sure its a sensor and not simply a resistor ? I've heard about the resistor, but I am uncertain if this is the case here. I was just repeating the conversation I had with the independent repair shop....
by songzunhuang
Fri Mar 20, 2020 8:55 pm
Forum: Engine - Mechanical - Electrical
Topic: Non-Essential Emission Sensor?
Replies: 6
Views: 307

Re: Non-Essential Emission Sensor?

I spoke to someone much more knowledgeable about that after I saw it on your car. I think about 2 years ago. He said that some disconnect and bypass that retrofit. He didn’t make any claims about its effectiveness as he didn’t have enough experience with the results. Sorry I can’t be of more help. ...
by songzunhuang
Fri Mar 20, 2020 3:50 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 774
Views: 145445

Off to the Independent Mechanic

The shark got some external TLC last week. I was going to the grocery store and on the way back home, the idle got really bad and the car even died. I've been chasing a bad idle for quite a while and since I expected to be at home for a while, I decided to just let the shop have at it. So they smoke...
by songzunhuang
Thu Mar 19, 2020 3:24 am
Forum: The Saloon
Topic: This Sucks
Replies: 12
Views: 383

Re: This Sucks

So far, my observations lead me to believe that the COVID-19 virus gives everyone who is NOT affected, the shits.
How else can you explain the run on toilet paper? :-k
by songzunhuang
Wed Mar 18, 2020 4:21 pm
Forum: My Project
Topic: There’s a car under that dust!
Replies: 9
Views: 727

Re: There’s a car under that dust!

Ronnie Wilson wrote:
Thu Feb 06, 2020 2:27 pm
Hi

Looks good.

Please tell me your going to remove those Front and rear Bumpers and replace with Euro ones.

Good luck 👍
Ronnie, I considered that for my car, but it's rudely expensive. I guess it all depends on how far one wants to go on this.
by songzunhuang
Wed Mar 18, 2020 5:49 am
Forum: Engine - Mechanical - Electrical
Topic: Non-Essential Emission Sensor?
Replies: 6
Views: 307

Non-Essential Emission Sensor?

So I finally gave up on my rough idle and took my car to my friendly local independent BMW shop. They checked all the same things I already checked and then added a smoke test, valve adjustment and condition of plugs and ignition parts. Everything was fine they said. Of course they found lots of lit...
by songzunhuang
Wed Mar 11, 2020 1:33 am
Forum: My Project
Topic: Sunroof woes...
Replies: 9
Views: 3473

Re: Sunroof woes...

I am about to get into this project on my car and wondering about all the pieces. If i understand correct I need two pieces, the short one 990mm (54121870086) and the long one 1440mm (54121933203). But what about the single one 2370mm (54121972055)? is it actually too short? ECS Tuning lists them a...
by songzunhuang
Tue Feb 11, 2020 10:54 pm
Forum: My Project
Topic: 1984 633i: Saved from the barn
Replies: 23
Views: 1332

Re: 1984 633i: Saved from the barn

Nicely done! I did an injector overhaul on my e24 as well, but I didn't paint the injector bodies. I painted the rail instead. I tried to have the gold tone galvanizing treatment, but it just ended up looking like gold. Oh well. I did get a sonic cleaner device and soaked the injectors for a few hou...
by songzunhuang
Mon Feb 03, 2020 4:11 pm
Forum: The Saloon
Topic: Bigcoupe.com Fundraiser - Super Bowl Pool
Replies: 33
Views: 2238

Re: Bigcoupe.com Fundraiser - Super Bowl Pool

Congratulations to the winners! 1st Qtr HEATHCLIFFE $100 2nd Qtr DESENTORE $100 3rd Qtr DESENTORE $100 Final SONG Z HONG $200 Thank you to everybody who donated 8) ‘Twas a bittersweet day. The 49ers lost (my favored team), but I did ok in this pool. What a painful 4th quarter it was! Thanks for man...
by songzunhuang
Tue Jan 28, 2020 6:47 pm
Forum: Engine - Mechanical - Electrical
Topic: Rough Idle and Power Steering Pump - connected?
Replies: 4
Views: 513

Re: Rough Idle and Power Steering Pump - connected?

I've been battle a rough idle for a long time. I've tried just about everything and was just at my wits ends and decided to turn my attention to other matters. So there was the screechy power steering pump (and the associated leaky brake booster) to repair. Two weeks ago, I completed the power stee...
by songzunhuang
Mon Jan 27, 2020 7:22 pm
Forum: My Project
Topic: 1984 633i: Saved from the barn
Replies: 23
Views: 1332

Re: 1984 633i: Saved from the barn

I got the same car! Best of luck and hop on over to my Project thread to see the long list of things I've done to make (and keep) mine a daily driver.
In the past 5 years I've clocked just over 45,597 miles on the car.

https://bigcoupe.com/phpBB2/viewtopic.php?f=25&t=25858

An adventure awaits!
by songzunhuang
Mon Jan 27, 2020 6:31 pm
Forum: Engine - Mechanical - Electrical
Topic: Rough Idle and Power Steering Pump - connected?
Replies: 4
Views: 513

Rough Idle and Power Steering Pump - connected?

I've been battling a rough idle for a long time. I've tried just about everything and was just at my wits ends and decided to turn my attention to other matters. So there was the screechy power steering pump (and the associated leaky brake booster) to repair. Two weeks ago, I completed the power ste...
by songzunhuang
Mon Jan 27, 2020 6:24 pm
Forum: My Project
Topic: Electrifying my '85 635CSi Euro
Replies: 36
Views: 3015

Re: Electrifying my '85 635CSi Euro

Wow, that some serious stuff. Did I understand this correctly in that you'll be mating the electric motor to a manual 5 speed tranny? Almost all electric cars seem to be direct drive (a la Tesla) or come kinda CV, which I don't think exists for a e24. ;) This will be a very interesting thing to foll...
by songzunhuang
Fri Jan 24, 2020 11:03 pm
Forum: The Saloon
Topic: Bigcoupe.com Fundraiser - Super Bowl Pool
Replies: 33
Views: 2238

Re: Bigcoupe.com Fundraiser - Super Bowl Pool

I'm in as well, but I think there is a typo in your email address.
Surely your domain extension is ".com" and not ".con" right?

There are weird connotations to the incorrect one!
OK, off to PayPal.
by songzunhuang
Fri Jan 24, 2020 4:53 pm
Forum: The Saloon
Topic: What did you do to your E24 today?
Replies: 832
Views: 166902

Re: What did you do to your E24 today?

Today: Fitted new ignition box, exhaust rear section, water pump, fan clutch, fan, radiator (and mounts). Started to fit the center console. Test fired the car and ran it for the first time in 2 1/2 years. Tomorrow I will fit a new thermostat and run it up to temperature then start fitting the rest...