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Forum: E39 (1997 - 2003) 07-04-2020, 06:28 PM
Replies: 16
Views: 454
Posted By Chedley
Have you checked the fan blade, the fan coupling...

Have you checked the fan blade, the fan coupling and pulleys since you replaced the belt ? It is a critical part of the cooling system on the V8.

And no, I do not think it is the expansion tank,...
Forum: E39 (1997 - 2003) 06-30-2020, 04:42 PM
Replies: 20
Views: 833
Posted By Chedley
Well, your problems were probably caused by the...

Well, your problems were probably caused by the low or dead old battery. BTW, buy or get a battery charger/maintainer to keep your new battery fully charged. It is a cheap $30 charger that can save...
Forum: E39 (1997 - 2003) 06-28-2020, 07:24 PM
Replies: 51
Views: 1,888
Posted By Chedley
SamD, Good job on the valley pan and knock...

SamD,
Good job on the valley pan and knock sensors replacement. Yes, those frail wires should/could have been replaced "while you're in there".
But I would not worry about it, as long as they work....
Forum: E39 (1997 - 2003) 06-25-2020, 06:42 PM
Replies: 20
Views: 833
Posted By Chedley
So, back the OP who wrote: Question-1...

So, back the OP who wrote:



Question-1 : Do you want to read and clear fault codes of the Engine module only ?
If so, any OBD2 generic code reader should do. :thumbup:

Question 2: Or do...
Forum: E39 (1997 - 2003) 06-21-2020, 06:20 PM
Replies: 10
Views: 402
Posted By Chedley
Check all your electric connections starting from...

Check all your electric connections starting from the battery, grounds in particular. Make sure they are clean and tight....:dunno:
I'd bet you have a loose ground connection somewhere in the car. :(
Forum: E39 (1997 - 2003) 06-20-2020, 01:45 AM
Replies: 54
Views: 1,609
Posted By Chedley
Huh...are you sure your mechanic is not...

Huh...are you sure your mechanic is not "inventing" an explanation ?? :dunno:
Because a bit of grease or anti-seize at those contact points between the pads and the carrier, would have fixed the...
Forum: E39 (1997 - 2003) 06-19-2020, 06:29 PM
Replies: 5
Views: 322
Posted By Chedley
Yes, I have done it on the V8 (M62TU engine) of...

Yes, I have done it on the V8 (M62TU engine) of my car, as a temporary fix while repairing then replacing the aux water pump. It may throw an error code (on INPA , IHKA module) but not a a...
Forum: E39 (1997 - 2003) 06-19-2020, 01:32 AM
Replies: 5
Views: 322
Posted By Chedley
No need for a valve. You can easily bypass it...

No need for a valve.
You can easily bypass it with a T or Y hose fitting that you can get from any car parts store.
Forum: E39 (1997 - 2003) 06-18-2020, 01:24 PM
Replies: 15
Views: 433
Posted By Chedley
Well, in that case, the "old school"...

Well, in that case, the "old school" recommendation should be to "stomp on the brakes" in a parking lot or gravel road, BEFORE servicing the brakes system, bleeding and flushing the old fluid.
Forum: E39 (1997 - 2003) 06-18-2020, 01:10 PM
Replies: 51
Views: 1,888
Posted By Chedley
Buy only BMW oem parts when it comes to sensors,...

Buy only BMW oem parts when it comes to sensors, any sensors...
Knock sensors are hard to get to, and definitely so not worth the few dollars you could save on after-market parts.
Forum: E39 (1997 - 2003) 06-17-2020, 04:05 PM
Replies: 82
Views: 93,196
Posted By Chedley
Exactly.. The exploding expansion tank, whether...

Exactly.. The exploding expansion tank, whether it is -made in China- or not, with the metallic bleed screw or not.
Check the coolant level with engine cold.Do NOT overfill the coolant in the...
Forum: E39 (1997 - 2003) 06-17-2020, 03:54 PM
Replies: 7
Views: 283
Posted By Chedley
The starting/idling problems you mention may be...

The starting/idling problems you mention may be related to wrong throttle adaptations values. Reset the adaptations : engine off, turn key to position 2, wait 33 seconds, remove key. Then erase all...
Forum: E39 (1997 - 2003) 06-16-2020, 03:39 AM
Replies: 14
Views: 483
Posted By Chedley
The defective electric connection of the ...

The defective electric connection of the thermostat (inpa error code 140) may be the reason of the behavior you are seeing, As the DME activates the AUX fan based on temperature and input signal...
Forum: E39 (1997 - 2003) 06-15-2020, 01:44 AM
Replies: 14
Views: 483
Posted By Chedley
It is a very normal behavior for this engine. ...

It is a very normal behavior for this engine. "If it ai'nt broke, do not fix it"...!!
Forum: E39 (1997 - 2003) 06-08-2020, 01:36 AM
Replies: 15
Views: 514
Posted By Chedley
No. Not necessarily. But it is another...

No. Not necessarily.
But it is another relatively cheap plastic part, deep in the engine that you definitely want to replace "while you are there".
Also, replace any gaskets in sight,..."while you...
Forum: E39 (1997 - 2003) 06-04-2020, 02:01 AM
Replies: 9
Views: 309
Posted By Chedley
Yes, it could fault he ABS, IF the difference in...

Yes, it could fault he ABS, IF the difference in rpm / speedo -as computed by the tire size calculator- is more than 3%.
At least that is my understanding from a discussion we had a couple years...
Forum: E39 (1997 - 2003) 06-03-2020, 03:45 PM
Replies: 8
Views: 365
Posted By Chedley
Absolutely correct. :thumbup: However, if you...

Absolutely correct. :thumbup:
However, if you have INPA or other scanner for ABS, it is recommended to bleed the ABS pump anyway, when you do do the "complete brake service"...:angel:
Forum: E39 (1997 - 2003) 06-03-2020, 03:34 PM
Replies: 9
Views: 309
Posted By Chedley
No. But your speedometer will be off. Check...

No.
But your speedometer will be off. Check any "tire size calculator" to figure out by how much .
Forum: E39 (1997 - 2003) 06-03-2020, 03:33 PM
Replies: 9
Views: 309
Posted By Chedley
Get the "Bentley BMW E39 5-series Service...

Get the "Bentley BMW E39 5-series Service Manual". It used to be freely available in PDF format. Snoop around and download it.
Forum: E39 (1997 - 2003) 06-02-2020, 09:59 PM
Replies: 8
Views: 365
Posted By Chedley
So, your INPA cannot communicate with the ABS...

So, your INPA cannot communicate with the ABS module, but does communicate with the engine or transmission module : I mean you can enter the engine or transmission modules to read their error codes ?...
Forum: E39 (1997 - 2003) 06-01-2020, 09:13 PM
Replies: 25
Views: 688
Posted By Chedley
Did you consider the possibility of a defective...

Did you consider the possibility of a defective "new" thermostat ? What brand is it ?? Where did you buy it ???
Forum: E39 (1997 - 2003) 05-30-2020, 07:38 PM
Replies: 10
Views: 298
Posted By Chedley
No, your IHKA panel is fine. But you have a...

No, your IHKA panel is fine.
But you have a defective aux water pump , and a bad AUC sensor (known as aka "stink sensor").

The aux water pump can be repaired or even completely shunted. The AUC...
Forum: E39 (1997 - 2003) 05-29-2020, 05:53 PM
Replies: 25
Views: 688
Posted By Chedley
You have some air trapped in the car's cooling...

You have some air trapped in the car's cooling system, causing the overheating.
Bleed the air out. Google the bleeding procedure. There are tons of threads on this fgrum about how to do it.
Forum: E39 (1997 - 2003) 05-28-2020, 06:28 PM
Replies: 17
Views: 633
Posted By Chedley
Impressing. Could you share the secret of getting...

Impressing. Could you share the secret of getting a "good cleaning" of the engine bay ??

I never cleaned mine in 20 years of ownership....
Forum: E39 (1997 - 2003) 05-27-2020, 03:03 AM
Replies: 16
Views: 498
Posted By Chedley
Any BMW specific scanner that can read the ABS...

Any BMW specific scanner that can read the ABS module should have similar bleeding function.

BTW, you do not necessarily need a helper to open the bleeder screws while you are pressing on the...
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