www.gt4dc.co.uk
Maintain, Modify and DRIVE your GT-Four


It is currently Wed Dec 13, 2017 9:58 am




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: ST165 Fuel pump
PostPosted: Tue Aug 22, 2017 11:40 am 
Offline
New Poster

Joined: Sun Aug 20, 2017 9:19 pm
Posts: 3
Car Model: ST165
Hello im new on this forum. I have a ST165 that has been unused for a few years. The engine turns over fine but it wont start. The fuel pump seems to be jammed as couldnt hear anything. I connected a battery directly to the plug attached but no noise. Also i checked the power supply to the fuel pump which showed zero voltage. Im assuming the seized fuel pump may have caused a fuse or relay etc to blow.

A spark plug has been removed which was completely dry and the leads are sparking when turning engine over.

Any help advice would be appreciated on what to do next


Top
 Profile  
 
 Post subject: Re: ST165 Fuel pump
PostPosted: Tue Aug 22, 2017 2:29 pm 
Offline
Club Staff
User avatar

Joined: Wed Jul 13, 2005 5:10 pm
Posts: 1952
Location: Sunny Fareham, UK
Car Model: ST205
There is a relay for the fuel pump that switches in/out a resistor and this area could be "stuck/faulty".

IIRC, the 165 is the same as the 205 and in the engine diagnostic port you can link "Fp" with "+B" with a paper clip and bypass all that lot. This will make the fuel pump run - as soon as you bridge the terminals you'll here it spin up :)

_________________
Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
_______________________________________
Turbocharging - the replacement for displacement


Top
 Profile  
 
 Post subject: Re: ST165 Fuel pump
PostPosted: Tue Aug 22, 2017 3:23 pm 
Offline
New Poster

Joined: Sun Aug 20, 2017 9:19 pm
Posts: 3
Car Model: ST165
Thank you for your message
Can you explain where the relay and resistor can be found?
Is there a fuse linked to the fuel pump that could have blown?


Top
 Profile  
 
 Post subject: Re: ST165 Fuel pump
PostPosted: Tue Aug 22, 2017 10:38 pm 
Offline
Group B
User avatar

Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3587
Location: Bournemouth
Car Model: None
Welcome to the club.

The 165 fuel pump on/off is controlled from the AFM - air flow switches on the pump. Like the later models, the relay is a dual coil and is also switched on by the start signal. Additionally, there is a second relay which switches a resistor in series for idle/cruising.

If the pump is seized, then it will draw a lot of current and could blow a fuse, or end up with very little voltage if fed via the resistor. Bear in mind, it should only receive power with the engine running (or AFM flap pushed open) or with the starter turning.

If you have fed 12V direct to the pump plug in the boot and no fuel coming out, then it does sound like the pump is gone.

Download the following links for useful information.

https://drive.google.com/file/d/0B1egIA ... sp=sharing

https://drive.google.com/file/d/0B1egIA ... sp=sharing

https://drive.google.com/file/d/0B1egIA ... sp=sharing

_________________
If at first you don't suck seed, try drier grain.

Image


Top
 Profile  
 
 Post subject: Re: ST165 Fuel pump
PostPosted: Tue Aug 22, 2017 10:42 pm 
Offline
Group B
User avatar

Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3587
Location: Bournemouth
Car Model: None
p.s. Just looked in the 165 manual - last link. On the last page is the ECU circuit in full showing fuel pump and control circuits

The only fuse is the main EFI fuse. If this were blown I doubt you'd get ignition.

_________________
If at first you don't suck seed, try drier grain.

Image


Top
 Profile  
 
 Post subject: Re: ST165 Fuel pump
PostPosted: Wed Aug 23, 2017 9:07 pm 
Offline
New Poster

Joined: Sun Aug 20, 2017 9:19 pm
Posts: 3
Car Model: ST165
Thank you for your messages. I will have a look at it on Saturday.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group