E8x MAF sensor wire, repair/replace/?

Got a problem with your BMW 1 Series? Post your car problems here and seek advice from fellow car owners.

Moderators: Rich196, babybmwadmin, marco_polo, Producethis, Lambster

Autosri
Junior Member
Junior Member
Posts: 27
Joined: Thu Nov 08, 2018 9:27 pm

Re: E8x MAF sensor wire, repair/replace/?

Post by Autosri » Thu Jan 10, 2019 11:07 pm

Personaly not a fan of solder in car looms especially ones that are hanging in free air

Get some uninsulated through crimps/butt splices and some glue lined heat shrink tube and crimp them properly with some pliers

Get a set of cheap depin tools and pull the pins out and slide the glue lined shrink tube over the damaged insulation

You won’t fine solder joints in any factory looms anywhere at all all are cold weld/crimps

Autosri
Junior Member
Junior Member
Posts: 27
Joined: Thu Nov 08, 2018 9:27 pm

Re: E8x MAF sensor wire, repair/replace/?

Post by Autosri » Thu Jan 10, 2019 11:12 pm


Mr Whippy
Experienced Member
Experienced Member
Posts: 269
Joined: Fri Sep 28, 2018 9:39 pm

Re: E8x MAF sensor wire, repair/replace/?

Post by Mr Whippy » Fri Jan 11, 2019 2:17 am

Bulk Amazon cancellation... let’s see how much arrives haha!


OK gone with butt and crimp, and pin keys, to re-insulate all wires with shrink wrap.


Some of the eBay China suppliers are slooo, so had to pay a bit more for pin keys and butts on Amazon but at least I can get the job done on Tuesday, not early February haha... I’m not sure I could live with an insulation tape fix for that long.


£30 this time. Would have been £6 cheaper using eBay for it all but hey ho.



After looking at many automotive wire ends, you’re right, all plug ends are just crimped.

Obviously a good crimp is key. Are those CK crimpers going to be any good? I guess practice on similar wire will be needed.
Plus glue shrink wrap should secure things further.

I just have nightmares of some weird intermittent running issue in a few years and it’s because of a dodgy crimp that I’ve forgotten about :)
130i LE - exhaust flap mod - ssk & bmwp & M3 gbox mounts - bmwp handbrake - bmwp steering surround - camber pin mod - cdv delete - koni SA & bmwp front bump & koni rear bump

User avatar
jason@bwchiptune
Enthusiastic Member
Enthusiastic Member
Posts: 1281
Joined: Mon May 28, 2007 10:58 pm
Location: london,hayes,middx,ub31bb
Contact:

Re: E8x MAF sensor wire, repair/replace/?

Post by jason@bwchiptune » Fri Jan 11, 2019 4:54 am

I always solder the connections

All you need to do is extend your broken wire if needed
Solder the joints
Then use your shrink wrap glue on any open copper wires

BW chiptune
Tuning BMWs since 1991
Dyno Dynamics rolling road.
BW autorepairs
Over 30 year repairing BMWs.
New and fully refurbished BMW/Alpina ,Ecus (DME,DDE)and Cas units.
BMW Ecu repairs.
BMW remote Keys made and cut same day with or without car even if all keys lost we can supply you a key like the dealers do.
Key data fixed for non starters or when theft attempted.
Correction of Engine ECUs Cas and key fitted to your car (when a key set from a different car has been used).
Digital Service Records rest and corrections in idrive screen on 2013 onwards cars.
DPF repairs fixed without the need of removal of its guts or replacement.
40% of my work is repairing the problems that are caused by other tuners remap

For more info look in our section under sponsors on this forum

UK
0208 561 1818
07831 103030
Hayes
UB3 1BB

or

Spain
Orihuela Costa
+447831103030












Sent from my iPhone using Tapatalk Pro
Click here for: BMW Remaps
Click here for: BMW Repairs


DynoDynamics rolling road testing in london & newcastle

dealers across the uk

BMW tech
Performance tuning
Ecu repairs

8 & 9 Alpha ind est
Hayes
Ub3 1bb
02085611818
07831103030

Mr Whippy
Experienced Member
Experienced Member
Posts: 269
Joined: Fri Sep 28, 2018 9:39 pm

Re: E8x MAF sensor wire, repair/replace/?

Post by Mr Whippy » Mon Jan 14, 2019 11:39 pm

Well I did a quick fix with leccy tape and twisted wires for now.

Car ran ok on drive as a test.

Went to drive today and idle hunting up/down lots until warmed a bit.

Then on way home after 10 mile drive out, cold engine again, hunting, engine outline light in yellow on dash, but no fault codes or running issues via iDrive/gauge readouts.

Drove on as it was otherwise fine, but noticed half way back home that I couldn’t heel and toe... brake would cut throttle input.

Apart from that it felt super smooth and solid as usual.

Arrived home, left car. Went back later. Still hunting at cold idle (1200-1000 rpm up/down)
Yellow engine outline light still present, no faults on readouts.



Weird.

I’m gonna have to get inpa sorted and read out the actual fault.

It seems really odd this has started after having airbox/pipe to manifold off while doing recce for and doing a quick fix.

I bet it’s the naff twisted connection I did on MAF wire, but why it’s not throwing a proper fault and stuff is bizarre.


Hmmmm.
130i LE - exhaust flap mod - ssk & bmwp & M3 gbox mounts - bmwp handbrake - bmwp steering surround - camber pin mod - cdv delete - koni SA & bmwp front bump & koni rear bump

Post Reply

Return to “BMW Problems”