Advise on a new Giant Giant FastRoad E+1 Pro Electric Bike - 1376577306

[Baz the balloon man]

Hi
Thought to post a thread before I get some professional help which I think I may need.

Just bought this bike on e bay Giant FastRoad E+1 Pro Electric Bike - 1376577306

I think it’s new but I bought it in need of repair.

Please see attached photo more to follow.

Bike turns on but cuts out randomly !
- Giant have done a diagnostic's test on the bike and they have said the motor and the battery are fine - could be the controller or comms !

As an amateur but with some skill I would think to
First check for loose connection s
After that could I get some help .

With next steps before I find a professional who may be able to do a proper fault find ?

I am assuming the controller is combined with the motor if it turned out to be a fault does any one know if this can be sorted by an engineer or if a controller can be bought separately.

I am due to get the bike this morning so can post better pictures and information once I have the bike.

Cheers

Baz

 

[Nealh]

Buyer beware scenario with a closed system branded bike and more so with Giant , they use there own proprietary software on the system so only a Giant dealer will be able to source and replace.
The fact it is a used ebay item may mean it carries no warranty, if so then it might be an expensive repair .
Soundwave may be able to alude to whether his favourite mid drive repair shop can help out or not.

 

[matthewslack]

After it turns on, and before it randomly cuts out, does it operate as expected and ride as it should?

If yes, are there any common factors around the cutoff time? Bumps? Hills? High/low assist level?

 

[Baz the balloon man]

Thanks

 

[Baz the balloon man]

I may be a bit premature with post just waiting for fed ex to deliver it , then I will road test it and post again.

My initial thoughts are it will need a professional repair as the bike shop have had a Giant done diagnostic's test.

My best guess is it will need someone who is able to diagnose and fix the controller or with luck it may just be a poor connection.

Looking for any recommendations London area or if needs be I can send the motor for repair .
I will contact soundwave .

 

[saneagle]

Hi
Thought to post a thread before I get some professional help which I think I may need.

Just bought this bike on e bay Giant FastRoad E+1 Pro Electric Bike - 1376577306

I think it’s new but I bought it in need of repair.

Please see attached photo more to follow.

Bike turns on but cuts out randomly !
- Giant have done a diagnostic's test on the bike and they have said the motor and the battery are fine - could be the controller or comms !

As an amateur but with some skill I would think to
First check for loose connection s
After that could I get some help .

With next steps before I find a professional who may be able to do a proper fault find ?

I am assuming the controller is combined with the motor if it turned out to be a fault does any one know if this can be sorted by an engineer or if a controller can be bought separately.

I am due to get the bike this morning so can post better pictures and information once I have the bike.

Cheers

Baz

You couldn't have chosen a worse bike to try and fix. Unless you find a physical problem with it, you have virtually no chance unless you're good at reverse engineering CANbus stuff.

If by "cuts out randomly", you mean the LCD goes off and stays off, it could be a simple connection issue between the battery and the motor or a dodgy cable to the LCD or the cable that goes to the LCD pulled so that a wire is broken inside the insulation. You'd probably get an error code if the comms shut it down, so I think it's more likely to be a connection issue.